Re: [CentOS] Gathering information about RAM in sockets
On Wed, September 30, 2009 12:56 pm, Timo Schoeler wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Hi list, > > I have an IBM xseries 345, running CentOS 5.3, hosting a few Xen domUs. > > However, I need more RAM -- but cannot remember if all (four) RAM > sockets are populated (which would mean to buy higher capacity modules) > or if there are two slots left to use. > > However, I'd like (and think that it's possible, but don't remember how) > to check remotely. Take a look at dmidecode. Marko ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gathering information about RAM in sockets
On 09/30/2009 05:56 PM, Timo Schoeler wrote: > > Any hints? > dmidecode ? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
No this is not solution. I have tried to run firstboot but without result. There should be some script, that is making these files (including writing MAC address and full device name). Other thing is modprobe.conf - there is name of driver connected to device name (eth0, eth1, e.g.), but there is not solution how to change all that things when you are swapping ethernet card... 2009/9/30 Benjamin Donnachie : > 2009/9/30 happymaster23 : >> No, I want create files /etc/sysconfig/network-scripts/ifcfg-eth0 and >> others... > > Try running setup > > Ben > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gathering information about RAM in sockets
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 thus Marko A. Jennings spake: > On Wed, September 30, 2009 12:56 pm, Timo Schoeler wrote: >> -BEGIN PGP SIGNED MESSAGE- >> Hash: SHA1 >> >> Hi list, >> >> I have an IBM xseries 345, running CentOS 5.3, hosting a few Xen domUs. >> >> However, I need more RAM -- but cannot remember if all (four) RAM >> sockets are populated (which would mean to buy higher capacity modules) >> or if there are two slots left to use. >> >> However, I'd like (and think that it's possible, but don't remember how) >> to check remotely. > > Take a look at dmidecode. > > Marko Awesome, thanks -- exactly what I needed. :) Timo -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with CentOS - http://enigmail.mozdev.org/ iD8DBQFKw4+RO/2mgkVVV7kRAhGtAJ9Ayknw11imIwYWcdJlUw2pIyksaQCdEMA9 IWMqUfFYLrbHFokbYS4BsNY= =op0B -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gathering information about RAM in sockets
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Timo, dmidecode can show what RAM sockets are populated if your motherboard supports retrieval of this information. - From 'man dmidecode' dmidecode is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. Thanks to this table, you can retrieve this information without having to probe for the actual hardware. While this is a good point in terms of report speed and safeness, this also makes the presented information possibly unreliable. Timo Schoeler wrote: > Hi list, > > I have an IBM xseries 345, running CentOS 5.3, hosting a few Xen domUs. > > However, I need more RAM -- but cannot remember if all (four) RAM > sockets are populated (which would mean to buy higher capacity modules) > or if there are two slots left to use. > > However, I'd like (and think that it's possible, but don't remember how) > to check remotely. > > dmesg's first lines: > > Linux version 2.6.18-164.el5xen (mockbu...@builder16.centos.org) (gcc > version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 3 04:47:32 EDT > 2009 > BIOS-provided physical RAM map: > Xen: - 2080 (usable) > 0MB HIGHMEM available. > 520MB LOWMEM available. > Using x86 segment limits to approximate NX protection > On node 0 totalpages: 133120 > DMA zone: 133120 pages, LIFO batch:31 > DMI 2.3 present. > ACPI: RSDP (v000 IBM ) @ 0x000fdfc0 > ACPI: RSDT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdff80 > ACPI: FADT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdff00 > ACPI: MADT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdfe40 > ACPI: ASF! (v016 IBMSERONYXP 0x0001 IBM 0x45444f43) @ 0x7ffdfd80 > ACPI: DSDT (v001 IBMSERGEODE 0x1000 MSFT 0x010b) @ 0x > ACPI: Local APIC address 0xfee0 > ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) > ACPI: LAPIC (acpi_id[0x01] lapic_id[0x06] enabled) > ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) > ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled) > ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1]) > ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1]) > ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1]) > ACPI: LAPIC_NMI (acpi_id[0x07] dfl dfl lint[0x1]) > ACPI: IOAPIC (id[0x0e] address[0xfec0] gsi_base[0]) > IOAPIC[0]: apic_id 14, version 17, address 0xfec0, GSI 0-15 > ACPI: IOAPIC (id[0x0d] address[0xfec01000] gsi_base[16]) > IOAPIC[1]: apic_id 13, version 17, address 0xfec01000, GSI 16-31 > ACPI: IOAPIC (id[0x0c] address[0xfec02000] gsi_base[32]) > IOAPIC[2]: apic_id 12, version 17, address 0xfec02000, GSI 32-47 > ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) > ACPI: IRQ0 used by override. > ACPI: IRQ2 used by override. > ACPI: IRQ5 used by override. > Enabling APIC mode: Flat. Using 3 I/O APICs > Using ACPI (MADT) for SMP configuration information > Built 1 zonelists. Total pages: 133120 > Kernel command line: ro root=/dev/VG00/VG_root > Enabling fast FPU save and restore... done. > Enabling unmasked SIMD FPU exception support... done. > Initializing CPU#0 > CPU 0 irqstacks, hard=c075 soft=c073 > PID hash table entries: 4096 (order: 12, 16384 bytes) > Xen reported: 3059.962 MHz processor. > Console: colour VGA+ 80x25 > Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) > Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) > Software IO TLB enabled: > Aperture: 2 megabytes > > (...) > > Any hints? > > Thanks in advance, > > Timo > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos - -- Thank you, Preston Connors Atlantic.Net -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkrDj9AACgkQonXphwN+2nYHxACfQtA4sweB+idxW/onhZ+3RfEm sUwAoIe3UNttc0KWUut9pj4Rv5niywtO =XQ04 -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
happymaster23 wrote: > No this is not solution. I have tried to run firstboot but without > result. There should be some script, that is making these files > (including writing MAC address and full device name). Other thing is > modprobe.conf - there is name of driver connected to device name > (eth0, eth1, e.g.), but there is not solution how to change all that > things when you are swapping ethernet card... > try sys-unconfig (8) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Joseph L. Casale wrote: Don't bother with that, go straight to the source! http://packages.asterisk.org/ These get updated rather quickly. jlc +1 for this suggestion. Starting out it may be easier to pull packages from a repo if you're not familiar with building from source. BUT, in the long run, you'll need to learn it. When a security >vulnerability is fixed, you don't want to wait any longer than necessary for the package maintainer to get around to updating. Just grab the source and build. Also, the packages >don't always have all the functionality you may require (codecs, modules, etc). There are plenty of docs on how to do this as well as many helpful people on the Asterisk-Users >mailing list. You completely misunderstood my suggestion, and actually suggested something I learned a long time ago to never do:) The url as suggested by the name, *is* an rpm package repo. As I said, the packager gets these built with new releases and/or kernel updates very fast. Compiling software and bypassing the package mangler is always a risk for trouble down the road. Given the many deps Asterisk may require, its simpler to use this repo versus compiling. An aside as well, I see many people on this list always concerned with vulns and patches and always eager to simply `yum update`. FWIW, if the vuln doesn't affect you, it's not a vuln for *you*. You may not have the module installed/active or in my case, the internet facing exposure is limited to an VSP who I *very much* doubt would use my system to dial for free based on one of the recent vulns. I wouldn't panic about being at risk for vulns *just because* a vuln exists, it may not affect you. I had an Ast box running without a reboot or update in almost a year cuz I couldn't get the window. Its exposure was so highly minimized that it wasn't even a consideration. None of the updates pertaining to stability were ever applicable either to my best knowledge so I didn't worry... jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I have a dedicated * CentOS box that shows today as uptime 543 days. I built from scratch as I needed to support a four port analog trunk card. This does not have internet access as I'm running it like an old fashioned PABX - just with great sip / linux based snom desk phones and all the attendant wiz-bang super stuff that * provides. I do want to do an update of it all to latest versions etc. but when it just keeps working it is hard to justify the down time and potential hic-ups. HTH Rob <>___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
happymaster23 wrote: > No this is not solution. I have tried to run firstboot but without > result. There should be some script, that is making these files > (including writing MAC address and full device name). Other thing is > modprobe.conf - there is name of driver connected to device name > (eth0, eth1, e.g.), but there is not solution how to change all that > things when you are swapping ethernet card... Basically you need to put the ethernet MAC address of the new card in the HWADDR= line of the appropriate ifcfg-eth? file. Assuming you are talking about Centos 5.x, the devices are renamed to match these files based on the hwaddr entries even if they were detected in a different order. But some conditions that I don't understand may trigger all of these files to be renamed with a .bak extension at bootup and new default dhcp configs created instead. This is never fun when your only access to the machine is through the network. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
Thank you, this looks good, but I don´t want unconfigure whole system... 2009/9/30 John R Pierce : > happymaster23 wrote: >> No this is not solution. I have tried to run firstboot but without >> result. There should be some script, that is making these files >> (including writing MAC address and full device name). Other thing is >> modprobe.conf - there is name of driver connected to device name >> (eth0, eth1, e.g.), but there is not solution how to change all that >> things when you are swapping ethernet card... >> > > try sys-unconfig (8) > > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Gathering information about RAM in sockets
Marko A. Jennings wrote: > Take a look at dmidecode. > and, to cut the clutter, try... # dmidecode -t memory on most servers, the first entry will be the mainboard memory array, which should show how many slots and max capacity, while the rest of the entries will show the installed modules. This data is read from the i2c bus, and is stored in the serial eprom on the memory modules, so if you have a sketchy system, it may not be 100% accurate. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Rob Kampen wrote: > >> > I have a dedicated * CentOS box that shows today as uptime 543 days. I > built from scratch as I needed to support a four port analog trunk card. > This does not have internet access as I'm running it like an old > fashioned PABX - > just with great sip / linux based snom desk phones and all the attendant > wiz-bang super stuff that * provides. > > I do want to do an update of it all to latest versions etc. but when it > just keeps working it is hard to justify the down time and potential > hic-ups. If you are very well firewalled and trust all the local users you might get away with ignoring security updates but it's mostly a matter of luck. With the stock CentOS components, your downtime for an update is normally just a reboot and problems are extremely rare. If you'd added custom or 3rd party code items there's a somewhat greater risk, but it is still pretty unlikely that an update would break things - or that you wouldn't have heard about other people having a problem. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
Thank you, I am trying to make list of needed changes. So - first line of ifcfg-eth* is commented full name of adapter (no sense). Only one think that should be changed is HWADDR. This file is in three directories (/etc/sysconfig/network-script/ifcfg-eth*, /etc/sysconfig/networking/devices/ifcfg-eth* and /etc/sysconfig/networking/profiles/default/ifcfg-eth*). Other thing, that should be changed is /etc/modprobe.conf - there should be changed name of driver connected to name of interface. So if I am swapping to Intel´s 1000 family, there should be e1000e. Is there anything that what I forgot? 2009/9/30 Les Mikesell : > happymaster23 wrote: >> No this is not solution. I have tried to run firstboot but without >> result. There should be some script, that is making these files >> (including writing MAC address and full device name). Other thing is >> modprobe.conf - there is name of driver connected to device name >> (eth0, eth1, e.g.), but there is not solution how to change all that >> things when you are swapping ethernet card... > > Basically you need to put the ethernet MAC address of the new card in > the HWADDR= line of the appropriate ifcfg-eth? file. Assuming you are > talking about Centos 5.x, the devices are renamed to match these files > based on the hwaddr entries even if they were detected in a different > order. But some conditions that I don't understand may trigger all of > these files to be renamed with a .bak extension at bootup and new > default dhcp configs created instead. This is never fun when your only > access to the machine is through the network. > > -- > Les Mikesell > lesmikes...@gmail.com > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
happymaster23 wrote: > Thank you, > > I am trying to make list of needed changes. So - first line of > ifcfg-eth* is commented full name of adapter (no sense). Only one > think that should be changed is HWADDR. This file is in three > directories (/etc/sysconfig/network-script/ifcfg-eth*, > /etc/sysconfig/networking/devices/ifcfg-eth* and > /etc/sysconfig/networking/profiles/default/ifcfg-eth*). actually, those appear to be links to the same files... # ls -il /etc/sysconfig/network-scripts/ifcfg-eth0 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 ifcfg-eth0 # ls -il /etc/sysconfig/networking/profiles/default/ifcfg-eth0 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 /etc/sysconfig/networking/profiles/default/ifcfg-eth0 # ls -il /etc/sysconfig/networking/devices/ifcfg-eth0 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 /etc/sysconfig/networking/devices/ifcfg-eth0 note the inode# is the same on all three. > Other thing, > that should be changed is /etc/modprobe.conf - there should be changed > name of driver connected to name of interface. So if I am swapping to > Intel´s 1000 family, there should be e1000e. > sysconfig (8) forces the system to run /etc/rc.d/rc.sysinit upon reboot. you might take a look at what that script is doing (a fair bit, actually). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
happymaster23 wrote: > Thank you, > > I am trying to make list of needed changes. So - first line of > ifcfg-eth* is commented full name of adapter (no sense). Only one > think that should be changed is HWADDR. This file is in three > directories (/etc/sysconfig/network-script/ifcfg-eth*, > /etc/sysconfig/networking/devices/ifcfg-eth* and > /etc/sysconfig/networking/profiles/default/ifcfg-eth*). Other thing, > that should be changed is /etc/modprobe.conf - there should be changed > name of driver connected to name of interface. So if I am swapping to > Intel´s 1000 family, there should be e1000e. > > Is there anything that what I forgot? I don't really know how the device detection stuff works (and haven't found much documentation), but I don't think the /etc/modprobe entries are actually necessary, at least for pci devices. You used to be able to sort-of control detection order there but I don't think that works any more and it didn't help much when you had multiple devices with the same driver anyway. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 9:13 AM, Chan Chung Hang Christopher > You can get asterisk packages from rpmforge on Centos...but on Ubuntu > you do not have to add an extra repository to get asterisk. What I meant was that the "pre-built" Asterisks (Trixbox, AsteriskNow, Elastix and PBX in a Flash) are all based on CentOS. I've never tried compiling it on my own -- I've only experimented with Asterisk. > When you say go voip, do you mean use sip for the stations only or also > for the trunks? My experience (and the experience of those I know) is that SIP trunks don't really work consistently. But, when I say I need to learn VOIP I'm mostly talking about the station side. My goal is to learn enough to build Asterisk boxes to replace key systems. I like the idea of Asterisk because it can use standard trunks for critical lines and SIP trunks for specialized purposes or overflow. (At least that's what I *think* it can do.) -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 9:35 AM, Joseph L. Casale wrote: > Have a look at FreeSwitch as well:) Thanks. I think I looked at it once, but I can't remember what it was about it that didn't attract me at the time. I'll take another look. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 1:18 PM, Rob Kampen wrote: > > I have a dedicated * CentOS box that shows today as uptime 543 days. I built > from scratch as I needed to support a four port analog trunk card. > This does not have internet access as I'm running it like an old fashioned > PABX - > just with great sip / linux based snom desk phones and all the attendant > wiz-bang super stuff that * provides. > > I do want to do an update of it all to latest versions etc. but when it just > keeps working it is hard to justify the down time and potential hic-ups. > HTH > Rob > Uptime is a red herring and is generally meaningless. You'd be better off performing updates and reboots at least once a month, so you don't need to worry about any big changes that might come with not updating for almost 2 years. If you updated now and something broke, you wouldn't know what did it. If you keep up incrementally, you can catch the small things as they come. You also don't have a "delicate flower" that you need to worry if it won't come up after the next reboot. That's not a good situation to be in. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 12:28 PM, Les Mikesell wrote: > Rob Kampen wrote: >> >> >> I have a dedicated * CentOS box that shows today as uptime 543 days. I >> built from scratch as I needed to support a four port analog trunk card. >> This does not have internet access as I'm running it like an old >> fashioned PABX - >> just with great sip / linux based snom desk phones and all the attendant >> wiz-bang super stuff that * provides. >> >> I do want to do an update of it all to latest versions etc. but when it >> just keeps working it is hard to justify the down time and potential >> hic-ups. > > If you are very well firewalled and trust all the local users you might > get away with ignoring security updates but it's mostly a matter of > luck. With the stock CentOS components, your downtime for an update is > normally just a reboot and problems are extremely rare. If you'd added > custom or 3rd party code items there's a somewhat greater risk, but it > is still pretty unlikely that an update would break things - or that you > wouldn't have heard about other people having a problem. If I understand Rob correctly here, there is actually no need for a firewall. He's not on the Internet. He's using analog trunks and SIP phones in a closed system. He's basically got a traditional key system or PBX switch that just happens to be based on CentOS/Asterisk. (Traditional telephone switches have been based on UNIX for years.) -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Ron Blizzard wrote: > > >> Have a look at FreeSwitch as well:) > > Thanks. I think I looked at it once, but I can't remember what it was > about it that didn't attract me at the time. I'll take another look. > Here's some interesting commentary on why it is likely to become more popular than asterisk even though it may take another year. http://nerdvittles.com/index.php?p=224 -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 1:18 PM, Brian Mathis wrote: > Uptime is a red herring and is generally meaningless. You'd be better > off performing updates and reboots at least once a month, so you don't > need to worry about any big changes that might come with not updating > for almost 2 years. If you updated now and something broke, you > wouldn't know what did it. If you keep up incrementally, you can > catch the small things as they come. You also don't have a "delicate > flower" that you need to worry if it won't come up after the next > reboot. That's not a good situation to be in. Except, in this case, you could probably go forever without updating. CentOS/Asterisk is just the switch's embedded OS as used here. I've maintained many Nortel switches (based on Wind River UNIX) which weren't patched for years -- no need to update the OS unless there was a specific problem or a necessary new feature. But I do think Rob wants to update this system. The problem is, unlike computer networks, people are very intolerant of phone downtime. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Ron Blizzard wrote: > >>> I do want to do an update of it all to latest versions etc. but when it >>> just keeps working it is hard to justify the down time and potential >>> hic-ups. >> If you are very well firewalled and trust all the local users you might >> get away with ignoring security updates but it's mostly a matter of >> luck. With the stock CentOS components, your downtime for an update is >> normally just a reboot and problems are extremely rare. If you'd added >> custom or 3rd party code items there's a somewhat greater risk, but it >> is still pretty unlikely that an update would break things - or that you >> wouldn't have heard about other people having a problem. > > If I understand Rob correctly here, there is actually no need for a > firewall. He's not on the Internet. He's using analog trunks and SIP > phones in a closed system. He's basically got a traditional key system > or PBX switch that just happens to be based on CentOS/Asterisk. > > (Traditional telephone switches have been based on UNIX for years.) You are still exposed to anything that is on the local LAN - which could include other machines that might have been compromised through browser exploits, etc. unless the segment only connects to IP phones (and you lose the ability to use soft phones). Linux is less vulnerable to most of these than windows would be, but still, if you know there are updates to fix known security issues you are pressing your luck if you don't install them. Phone switches are particularly attractive targets to hackers: http://nerdvittles.com/index.php?p=580 -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 1:42 PM, Les Mikesell wrote: > Ron Blizzard wrote: >> >> >>> Have a look at FreeSwitch as well:) >> >> Thanks. I think I looked at it once, but I can't remember what it was >> about it that didn't attract me at the time. I'll take another look. >> > > Here's some interesting commentary on why it is likely to become more > popular than asterisk even though it may take another year. > > http://nerdvittles.com/index.php?p=224 Thanks, I've bookmarked it. The only possible issue (I quickly read the article) is that, by emphasizing software applications I hope they don't break the TDM hardware interoperability. That's one of the main attractions of Asterisk for me. I can use it as a standard (traditional) telephone switch if I want. But I have heard of the Asterisk bottleneck before. Not a problem for the smaller keys systems that I'm thinking about, but I can see where it can be an issue when going bigger. (I'm still on the surface of all of this -- so I'm just going by stuff that I've read, not by personal experience.) -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
>If you are very well firewalled and trust all the local users you might >get away with ignoring security updates but it's mostly a matter of >luck. With the stock CentOS components, your downtime for an update is >normally just a reboot and problems are extremely rare. If you'd added >custom or 3rd party code items there's a somewhat greater risk, but it >is still pretty unlikely that an update would break things - or that you >wouldn't have heard about other people having a problem. That's just not always correct. Again, a sec update that is not applicable doesn't make sense to update to, and there many other circumstances to. Ironically, I broke this very box once by updating it. I had expected to have had to update DAHDI as it builds against the kernel, but something I never figured out become not compatible with the version of asterisk. It seg faulted every time I tried to start it. I ended up enabling the ast repo and updating asterisk as well after and it started fine. But it cost me a couple hours, and there was no fscking need to update. It's even firewalled from the local users. I wasted a bunch of time for nothing... YMMV, jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 1:55 PM, Les Mikesell wrote: > You are still exposed to anything that is on the local LAN - which could > include other machines that might have been compromised through browser > exploits, etc. unless the segment only connects to IP phones (and you > lose the ability to use soft phones). Linux is less vulnerable to most > of these than windows would be, but still, if you know there are updates > to fix known security issues you are pressing your luck if you don't > install them. That's the impression that I got, that the CentOS/Asterisk box was just connected to standard SIP hard phones and to TDM analog lines. (Like a traditional key system.) > Phone switches are particularly attractive targets to hackers: > http://nerdvittles.com/index.php?p=580 Even without being connected to a VOIP trunks or the LAN, phone systems are vulnerable to security breaches. Often voice mail has "outdialing" features. So a system can be set up to go into voice mail and then out to anywhere in the world. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SATA controler req
On Wed, Sep 23, 2009 at 2:16 PM, Steve Bonds wrote: > These $50 four port cards work wonderfully with the sata_sil24 drived included > with CentOS: > > http://www.newegg.com/Product/Product.aspx?Item=N82E16816132017 > > They only come as PCI. I never found anything stable enough for me > (which is VERY stable) for PCIe. Perhaps someone else has found > something good for that slot. These look promising: http://www.newegg.com/Product/Product.aspx?Item=N82E16816124027 (Syba SY-PEX40008, info at http://www.iocrest.com/products.php?SY-PEX40008) And at $60 for four ports... relatively affordable. I have not tried them personally since I have enough ports for now. However, this is probably the one I try when I run out unless someone else comes back with something better. :-) -- Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 2:43 PM, Ron Blizzard wrote: > On Wed, Sep 30, 2009 at 1:18 PM, Brian Mathis wrote: > >> Uptime is a red herring and is generally meaningless. You'd be better >> off performing updates and reboots at least once a month, so you don't >> need to worry about any big changes that might come with not updating >> for almost 2 years. If you updated now and something broke, you >> wouldn't know what did it. If you keep up incrementally, you can >> catch the small things as they come. You also don't have a "delicate >> flower" that you need to worry if it won't come up after the next >> reboot. That's not a good situation to be in. > > Except, in this case, you could probably go forever without updating. > CentOS/Asterisk is just the switch's embedded OS as used here. I've > maintained many Nortel switches (based on Wind River UNIX) which > weren't patched for years -- no need to update the OS unless there was > a specific problem or a necessary new feature. But I do think Rob > wants to update this system. The problem is, unlike computer networks, > people are very intolerant of phone downtime. > > -- > RonB -- Using CentOS 5.3 The difference is that CentOS is a general-purpose OS that can be used for many things, and has a much bigger installed base. That makes it more of a target and would likely be included in scanning tools. A custom OS running on a PBX might also have vulnerabilities, but it's also probably not a big target because of the diversity of systems out there and relative limited utility one would have if such a system were compromised. That you tend to tend to think of it as an "appliance" running the phone system does not change the fact that it's actually a full-blown server OS with the same issues as other servers. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
Yes, you are right. You can delete all three files and make new one in /etc/sysconfig/network-scripts/. Other two files are automatically "created" by running setup command (choose device and then save properties). So, thank you very much everybody. I think, that now is everything OK (changes in modprobe.conf and in ifcfg-eth0 mirrored to other directories), network is working well. 2009/9/30 John R Pierce : > happymaster23 wrote: >> Thank you, >> >> I am trying to make list of needed changes. So - first line of >> ifcfg-eth* is commented full name of adapter (no sense). Only one >> think that should be changed is HWADDR. This file is in three >> directories (/etc/sysconfig/network-script/ifcfg-eth*, >> /etc/sysconfig/networking/devices/ifcfg-eth* and >> /etc/sysconfig/networking/profiles/default/ifcfg-eth*). > > actually, those appear to be links to the same files... > > # ls -il /etc/sysconfig/network-scripts/ifcfg-eth0 > 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 ifcfg-eth0 > # ls -il /etc/sysconfig/networking/profiles/default/ifcfg-eth0 > 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 > /etc/sysconfig/networking/profiles/default/ifcfg-eth0 > # ls -il /etc/sysconfig/networking/devices/ifcfg-eth0 > 2524900 -rw-r--r-- 3 root root 162 Nov 29 2007 > /etc/sysconfig/networking/devices/ifcfg-eth0 > > > note the inode# is the same on all three. > > > >> Other thing, >> that should be changed is /etc/modprobe.conf - there should be changed >> name of driver connected to name of interface. So if I am swapping to >> Intel´s 1000 family, there should be e1000e. >> > > sysconfig (8) forces the system to run /etc/rc.d/rc.sysinit upon > reboot. you might take a look at what that script is doing (a fair bit, > actually). > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
Christopher Chan wrote: >> And I can't believe I just write that...! I sound like a linux >> die-hard... >> > Just try Solaris or FreeBSD then. That should make you a Linux die-hard. :-D Oh yes. I tried Opensolaris for a while and now I'm more convinced of Linux than ever. mg. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
Sorin Srbu wrote: >>> HTH. >> Hi Sorin >> >> You can "sudo bash" and you will have a root terminal. In it, you can >> set the root password for root. > > Yupp, as I said, at the time I was testing Ubuntu, I was rather green and > didn't know about those little tricks. Now is a another matter, but I still > prefer CentOS. Besides, opening a terminal and typing in "su -" is way > faster. Saves keystrokes. Hi The reason for Ubuntu in the laptop is simply because CentOS didn't work very well. I followed the wiki about XPS M1530[1] and everything almost work. At the office one of the developers uses a Dell Precision laptop with RHEL 5.3 (it came from Dell with RHEL) and works really fine. So, I image that some laptops are more CentOS/RHEL-friendly than others. Now I'm used to use sudo. It is a great tool. I use it everywhere. And everything I do appears in the logwatch. Regards mg. [1] http://wiki.centos.org/HowTos/Laptops/Dell/XPS_M1530 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
happymaster23 wrote: > Hello, > > I have installed new network card under CentOS 5.3, but there are some > problems. I want delete existing ifcfg-eth0 and automatically make new > on as it is during OS installation process. Is it possible? > > Thank you Hi I'm not sure if I understood your problem, but here it goes. Have you tried system-config-network? Are you using Network-Manger? Regards mg. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] du vs df size difference
Hi all, Curious issue.. looking in to how much disk space is being used on a machine (CentOS 5.3). When I compare the output of du vs df, I am seeing a 12GB difference with du saying 8G used and df saying 20G used. # du -hcx / 8.0Gtotal # df -h / FilesystemSize Used Avail Use% Mounted on /dev/xvda3 22G 20G 637M 97% / I recognize that in most cases du and df are not going to report the same but I am concerned about having a 12GB disparity. Does anyone have any thoughts about this or reason as to why there is a big difference? I have read a few articles online about it and none have really shown such a large difference. Thanks Ryan Pugatch Systems Administrator, TripAdvisor ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] OT: dmidecode data - what is maximum RAM capacity of this box?
In Timo's thread about RAM today, I noticed dmidecode and I got the data for my Dell Dimension 2400 (Celeron CPU) box, which is below. I won this box in a raffle, during February 2005. After I got the box, I got conflicting information, from Crucial.com and from Dell Latin America, regarding the maximum RAM configuration. To be conservative, I bought two 256 MB DIMMS from Crucial.com, early in 2005. Running dmidecode, I got the below information. Questions: (a) Is the maximum capacity of this motherboard 1 GB instead of the 512 MB I thought it was? (b) Is it possible the mainboard capacity is 1 GB, but that the BIOS limits to 512 MB? To add further confusion, I just searched for this model on crucial.com and they are showing 2 GB total capacity. However, they do not allow one to select between the Celeron CPU which I have and a non Celeron CPU and they may have different capacity. TIA!Lanny dmidecode for Dell Dimension 2400 Celeron box Handle 0x1000, DMI type 16, 15 bytes. Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 1 GB Error Information Handle: Not Provided Number Of Devices: 2 Handle 0x1100, DMI type 17, 23 bytes. Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 256 MB Form Factor: DIMM Set: None Locator: DIMM_1 Bank Locator: Not Specified Type: SDRAM Type Detail: Synchronous Speed: 266 MHz (3.8 ns) Handle 0x1101, DMI type 17, 23 bytes. Memory Device Array Handle: 0x1000 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 256 MB Form Factor: DIMM Set: None Locator: DIMM_2 Bank Locator: Not Specified Type: SDRAM Type Detail: Synchronous Speed: 266 MHz (3.8 ns) Handle 0x1301, DMI type 19, 15 bytes. Memory Array Mapped Address Starting Address: 0x000 Ending Address: 0x0001FFF Range Size: 512 MB Physical Array Handle: 0x1000 Partition Width: 0 Handle 0x1402, DMI type 20, 19 bytes. Memory Device Mapped Address Starting Address: 0x000 Ending Address: 0xFFF Range Size: 256 MB Physical Device Handle: 0x1100 Memory Array Mapped Address Handle: 0x1301 Partition Row Position: 1 Handle 0x1403, DMI type 20, 19 bytes. Memory Device Mapped Address Starting Address: 0x0001000 Ending Address: 0x0001FFF Range Size: 256 MB Physical Device Handle: 0x1101 Memory Array Mapped Address Handle: 0x1301 Partition Row Position: 1 from Crucial.com Q: How much memory can my computer handle? from Crucial.com A: 2048MB. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
On Wed, Sep 30, 2009 at 04:59:25PM -0400, Ryan Pugatch wrote: > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. > > # du -hcx / > 8.0Gtotal > > # df -h / > FilesystemSize Used Avail Use% Mounted on > /dev/xvda3 22G 20G 637M 97% / > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. Do this: mount /dev/xvda3 /mnt du -hc /mnt And see if you can find the other 12GB. I usually do: du -mc --max-depth 2 /mnt | sort -n Though I've recently learned: du -hc --max-depth 2 /mnt | sort --human-readable or some such, but that requires a very recent coreutils installation. -- lfr 0/0 pgpM4QRWaw93w.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: dmidecode data - what is maximum RAM capacity of this box?
Lanny Marcus wrote: > In Timo's thread about RAM today, I noticed dmidecode and I got the > data for my Dell Dimension 2400 (Celeron CPU) box, which is below. I You running the latest bios for the system? According to dell 2GB is the max http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/specs.htm Looks like it supports multiple memory speeds, a lot of systems can use more total memory if the memory speed is lower(most often seen this on Supermicro boards anyways) nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Cut'n'paste from a tutorial I'm writing right now: Check with lsof if there are any very large files that are already deleted but are still open by some processes. # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 32M 153M 18% /boot # dd if=/dev/zero of=testfile bs=1024000 count=50 50+0 records in 50+0 records out 5120 bytes (51 MB) copied, 0.370919 s, 138 MB/s # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 81M 104M 44% /boot # vi testfile # rm testfile # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 81M 104M 44% /boot < quit vi> # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 32M 153M 18% /boot Also verify that your fs doesn't have a insane root reserved space set. # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 32M 153M 18% /boot # tune2fs -m 50 /dev/md0 tune2fs 1.41.4 (27-Jan-2009) Setting reserved blocks percentage to 50% (102368 blocks) # df -h . FilesystemSize Used Avail Use% Mounted on /dev/md0 194M 32M 63M 34% /boot THere are of course other reasons but those two are a common problem. Peter. On Wednesday 30 September 2009 16:59:25 Ryan Pugatch wrote: > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. > > # du -hcx / > 8.0Gtotal > > # df -h / > FilesystemSize Used Avail Use% Mounted on > /dev/xvda3 22G 20G 637M 97% / > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. > > Thanks > > > > Ryan Pugatch > Systems Administrator, TripAdvisor > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. du won't look at deleted files, while df will. run lsof | grep deleted and see if any files are deleted are still open, space from them will not be freed until the process releases the file handle. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
-Original Message- From: Brian Mathis The difference is that CentOS is a general-purpose OS that can be used for many things, and has a much bigger installed base. That makes it more of a target and would likely be included in scanning tools. A custom OS running on a PBX might also have vulnerabilities, but it's also probably not a big target because of the diversity of systems out there and relative limited utility one would have if such a system were compromised. That you tend to tend to think of it as an "appliance" running the phone system does not change the fact that it's actually a full-blown server OS with the same issues as other servers. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
On Wed, Sep 30, 2009 at 2:59 PM, Ryan Pugatch wrote: > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. > > # du -hcx / > 8.0G total > > # df -h / > Filesystem Size Used Avail Use% Mounted on > /dev/xvda3 22G 20G 637M 97% / > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. One of the things I run into are either hidden files or leaked files where a process is still talking to a file but the directory no longer sees it so du doesn't catch it. ls -l /proc/[0-9]*/fd/| grep delete will show those up. Then its a matter if you want to keep that file around or not. also du / did not look for files in / that were starting with a . ls -la / and see if there are hidden directories or files taking up space. Finally sparse files can give odd readings at time.. but that is the least likely reason. > Thanks > > > > Ryan Pugatch > Systems Administrator, TripAdvisor > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Stephen J Smoogen. Ah, but a man's reach should exceed his grasp. Or what's a heaven for? -- Robert Browning ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
At Wed, 30 Sep 2009 21:41:48 +0100 CentOS mailing list wrote: > > Sorin Srbu wrote: > >>> HTH. > >> Hi Sorin > >> > >> You can "sudo bash" and you will have a root terminal. In it, you can > >> set the root password for root. > > > > Yupp, as I said, at the time I was testing Ubuntu, I was rather green and > > didn't know about those little tricks. Now is a another matter, but I still > > prefer CentOS. Besides, opening a terminal and typing in "su -" is way > > faster. Saves keystrokes. > Hi > > The reason for Ubuntu in the laptop is simply because CentOS didn't work > very well. I followed the wiki about XPS M1530[1] and everything > almost work. At the office one of the developers uses a Dell Precision > laptop with RHEL 5.3 (it came from Dell with RHEL) and works really > fine. So, I image that some laptops are more CentOS/RHEL-friendly than > others. Probably older ones or ones with less 'bleeding edge' hardware. > > Now I'm used to use sudo. It is a great tool. I use it everywhere. And > everything I do appears in the logwatch. > > Regards > > mg. > > [1] http://wiki.centos.org/HowTos/Laptops/Dell/XPS_M1530 > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
At Wed, 30 Sep 2009 16:59:25 -0400 CentOS mailing list wrote: > > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. > > # du -hcx / > 8.0Gtotal > > # df -h / > FilesystemSize Used Avail Use% Mounted on > /dev/xvda3 22G 20G 637M 97% / > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. Somewhere you have an open, but deleted file. Maybe someone deleted a log file and did NOT do a SIGHUP (or restart) of the corresponding deamon? Or some similar weirdness. Some running process is hanging onto a an open file descriptor of a file that has been deleted. Note that some program create 'unnamed' temp files -- opened, then deleted -- as soon as the program exits, the temp file space gets recycled, without the program 'remembering' to delete it, since it is already deleted. This saves having to deal with an exit handler in case the program crashes. > > Thanks > > > > Ryan Pugatch > Systems Administrator, TripAdvisor > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
At Wed, 30 Sep 2009 14:10:46 -0700 (PDT) CentOS mailing list wrote: > > Ryan Pugatch wrote: > > > I recognize that in most cases du and df are not going to report the > > same but I am concerned about having a 12GB disparity. Does anyone have > > any thoughts about this or reason as to why there is a big difference? > > I have read a few articles online about it and none have really shown > > such a large difference. > > du won't look at deleted files, while df will. df does not look at files (deleted or not) at all! It just looks at allocated inodes. > > run > > lsof | grep deleted > > and see if any files are deleted are still open, space from them > will not be freed until the process releases the file handle. > > nate > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
-Original Message- From: Brian Mathis The difference is that CentOS is a general-purpose OS that can be used for many things, and has a much bigger installed base. That makes it more of a target and would likely be included in scanning tools. A custom OS running on a PBX might also have vulnerabilities, but it's also probably not a big target because of the diversity of systems out there and relative limited utility one would have if such a system were compromised. That you tend to tend to think of it as an "appliance" running the phone system does not change the fact that it's actually a full-blown server OS with the same issues as other servers. But if you're not connected to the Internet none of of this means anything. CentOS/Asterisk *would* be an appliance under these conditions. There are no "server" vulnerabilities because you're not connected to a LAN. Apologies if this is unreadable. I'm typing on my Centro and I do that very often. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Robert Heller wrote: > df does not look at files (deleted or not) at all! It just looks at > allocated inodes. yeah but the result is pretty much the same, at least to me. I suppose I could of worded it a bit differently. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: dmidecode data - what is maximum RAM capacity of this box?
On Wed, Sep 30, 2009 at 4:09 PM, nate wrote: > Lanny Marcus wrote: >> In Timo's thread about RAM today, I noticed dmidecode and I got the >> data for my Dell Dimension 2400 (Celeron CPU) box, which is below. I > > You running the latest bios for the system? Probably not. I will ask them if they have a BIOS upgrade for this board. > > According to dell 2GB is the max > > http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/specs.htm > > Looks like it supports multiple memory speeds, a lot of systems > can use more total memory if the memory speed is lower(most often > seen this on Supermicro boards anyways) Nate: On the Dell URL you provided above, I saw the below data. I see the 2 GB Max, but they don't show using 1 GB DIMMS. Not sure where their error is. I will try to get their Tech Support on the phone in the morning and ask about a BIOS upgrade and also if I can install two 512 MB DIMMs or two 1 GB DIMMs. Thank you! Lanny Memory Architecture DDR SDRAM Memory connectors two Memory capacities 128-, 256-, or 512-MB Minimum memory 128 MB shared DDR SDRAM NOTE: Between 32 and 64 MB of system memory may be allocated to support graphics, depending on system memory size and other factors. Maximum memory 2 GB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? Sparse files? -- Florin Andrei http://florin.myip.org/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] SATA cards?
Hi All, I have a server that is IDE drives and I dont have any so I wanted to put in a sata PCI card. Will CentOS be able to see the drives as they will be connected to the card? -ML ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SATA cards?
On Wed, Sep 30, 2009 at 5:52 PM, ML wrote: > Hi All, > > I have a server that is IDE drives and I dont have any so I wanted to > put in a sata PCI card. > > Will CentOS be able to see the drives as they will be connected to the > card? > My CentOS systems are all using SATA drives. All worked out of the box, though I did use software RAID rather than the hardware RAID. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 4:23 PM, wrote: > -Original Message- > From: Brian Mathis > > The difference is that CentOS is a general-purpose OS that can be used > for many things, and has a much bigger installed base. That makes it > more of a target and would likely be included in scanning tools. A > custom OS running on a PBX might also have vulnerabilities, but it's > also probably not a big target because of the diversity of systems out > there and relative limited utility one would have if such a system > were compromised. > > That you tend to tend to think of it as an "appliance" running the > phone system does not change the fact that it's actually a full-blown > server OS with the same issues as other servers. > > > But if you're not connected to the Internet none of of this means anything. > CentOS/Asterisk *would* be an appliance under these conditions. There are no > "server" vulnerabilities because you're not connected to a LAN. > > Apologies if this is unreadable. I'm typing on my Centro and I do that very > often. ...and I *don't* do that very often. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ftp issue in Centos 5.3
Quoting Lanny Marcus : > On 9/29/09, Dave Stevens wrote: >> I manage a small server that I back up weekly. I do this by making a >> tarball of relevant files then transferring it over the local subnet >> to my station (Fedora 11), whereupon I burn it to DVD. There is no >> optical burner on the server. The tarball amounts to a bit under 5 >> gigs. Recently I've started getting an error telling me to try PASV or >> PORT first. I use the gFTP client on my machine and as far as I know >> there is no option in this program to use either option either locally >> or remotely (on the server.) >> >> Any ideas on this one? > > I use gFTP to transfer small files to/from one of my web sites. Are > you using a proxy? In the Options, for FTP, there is an "Ignore PASV > address". You may want to Google for this error and surf over to > http://www.gftp.org/ Strange that you began getting these errors and > I wonder if it has to do with your Fedora 11 box and not your server. >GL yes, it apparently was a problem at my end. I removed and reinstalled gFTP and things started to work again. The robustness (or lack thereof) of the backup method will get solved in the not too distant future since I have just ordered the new dream server and will be rsyncing off-site more-or-less continuously. Thanks for the tips. Dave > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- When addiction becomes commonplace in a society, people become addicted not only to alcohol and drugs, but to a thousand other destructive pursuits: money, power, dysfunctional relationships, or video games. A social perspective on addiction does not deny individual differences in vulnerability to addiction, but it removes them from the foreground of attention, because social determinants are more powerful. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
On Wed, Sep 30, 2009 at 17:59, Ryan Pugatch wrote: > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. Maybe you have a mount point overlaping big files... du -x will not find them... -- Marcelo "¿No será acaso que ésta vida moderna está teniendo más de moderna que de vida?" (Mafalda) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 5:23 PM, wrote: > -Original Message- > From: Brian Mathis > > The difference is that CentOS is a general-purpose OS that can be used > for many things, and has a much bigger installed base. That makes it > more of a target and would likely be included in scanning tools. A > custom OS running on a PBX might also have vulnerabilities, but it's > also probably not a big target because of the diversity of systems out > there and relative limited utility one would have if such a system > were compromised. > > That you tend to tend to think of it as an "appliance" running the > phone system does not change the fact that it's actually a full-blown > server OS with the same issues as other servers. > > > But if you're not connected to the Internet none of of this means anything. > CentOS/Asterisk *would* be an appliance under these conditions. There are no > "server" vulnerabilities because you're not connected to a LAN. > > Apologies if this is unreadable. I'm typing on my Centro and I do that very > often. > "Not connected to the Internet", and "not connected to a LAN" are very different things. I doubt VOIP would work if the server was not connected to a LAN. There could be quite a few things on the LAN, depending on it's size, such as viruses, malware, and even users doing scans of the network. Don't assume that "out there" is insecure, and "in here" is secure. That's one of the biggest mistakes to make when creating a secure environment. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
On Wed, Sep 30, 2009 at 3:41 PM, Marcelo M. Garcia > The reason for Ubuntu in the laptop is simply because CentOS didn't work > very well. I followed the wiki about XPS M1530[1] and everything > almost work. At the office one of the developers uses a Dell Precision > laptop with RHEL 5.3 (it came from Dell with RHEL) and works really > fine. So, I image that some laptops are more CentOS/RHEL-friendly than > others. I'm lucky that my Dell Latitude D400 works 100% with CentOS -- I imagine being "behind the curve" in hardware is a definite advantage here. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 5:15 PM, Brian Mathis wrote: > "Not connected to the Internet", and "not connected to a LAN" are very > different things. I doubt VOIP would work if the server was not > connected to a LAN. There could be quite a few things on the LAN, > depending on it's size, such as viruses, malware, and even users doing > scans of the network. Don't assume that "out there" is insecure, and > "in here" is secure. That's one of the biggest mistakes to make when > creating a secure environment. You're right. I was thinking like a phone tech -- that the VOIP system's wiring was still separate from the regular LAN. -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Luciano Rocha wrote: > Do this: > mount /dev/xvda3 /mnt > du -hc /mnt > > And see if you can find the other 12GB. > > I usually do: > du -mc --max-depth 2 /mnt | sort -n > > Though I've recently learned: > du -hc --max-depth 2 /mnt | sort --human-readable or some such, but that > requires a very recent coreutils installation. > That's interesting.. du is showing the same amount as df when I do this. I wonder why.. Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SATA cards?
If the SATA controller is supported then CentOS will be able to see the drives. You might have a look at http://linux-ata.org/driver-status.html On Wed, Sep 30, 2009 at 5:52 PM, ML wrote: > Hi All, > > I have a server that is IDE drives and I dont have any so I wanted to > put in a sata PCI card. > > Will CentOS be able to see the drives as they will be connected to the > card? > > -ML > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Stephen John Smoogen wrote: > > ls -l /proc/[0-9]*/fd/| grep delete > > will show those up. Then its a matter if you want to keep that file > around or not. > > also du / did not look for files in / that were starting with a . > > ls -la / and see if there are hidden directories or files taking up space. > > Finally sparse files can give odd readings at time.. but that is the > least likely reason. > Nothing for deleted files and no large . files found. Thanks, Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Ron Blizzard wrote: > On Wed, Sep 30, 2009 at 5:15 PM, Brian Mathis wrote: > >> "Not connected to the Internet", and "not connected to a LAN" are very >> different things. I doubt VOIP would work if the server was not >> connected to a LAN. There could be quite a few things on the LAN, >> depending on it's size, such as viruses, malware, and even users doing >> scans of the network. Don't assume that "out there" is insecure, and >> "in here" is secure. That's one of the biggest mistakes to make when >> creating a secure environment. > > You're right. I was thinking like a phone tech -- that the VOIP > system's wiring was still separate from the regular LAN. But even with old-school phone switches, your support contract would require software updates at regular intervals and unless you had redundant hot-failover equipment, that would involve scheduled downtime. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Marcelo Roccasalva wrote: > Maybe you have a mount point overlaping big files... du -x will not find > them... Hey Marcelo, I am not sure what you mean.. can you give me an example? Thanks Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > Nothing for deleted files and no large . files found. > > Thanks, > > Ryan Oh, and no sparse files either :) Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > Marcelo Roccasalva wrote: > > >> Maybe you have a mount point overlaping big files... du -x will not find >> them... >> > > Hey Marcelo, > > I am not sure what you mean.. can you give me an example? > > Thanks > > Ryan > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > Hi, He means a situation where you have something this this You create a partion lets say /dev/hda1 you use it as you / partition you create a directory called /data and copy some data into it You then have a second partiton /dev/hda2 and you mount /dev/hda2 off of /data This mean that the data originally copied to the /data directory on hda1 is still taking up space on hda1 but you cant see it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > Hi all, > > Curious issue.. looking in to how much disk space is being used on a > machine (CentOS 5.3). When I compare the output of du vs df, I am > seeing a 12GB difference with du saying 8G used and df saying 20G used. > > # du -hcx / > 8.0Gtotal > > # df -h / > FilesystemSize Used Avail Use% Mounted on > /dev/xvda3 22G 20G 637M 97% / > > I recognize that in most cases du and df are not going to report the > same but I am concerned about having a 12GB disparity. Does anyone have > any thoughts about this or reason as to why there is a big difference? > I have read a few articles online about it and none have really shown > such a large difference. I see similar differences even when I: a) Boot from a rescue CD, b) Freshly fsck the file system to be tested, and c) Mount that file system read-only. I suspected the discrepancy might be due to the space used for the ext3 journal, but I also see it on a freshly created ext2 file system: # mount -r /dev/hda8 /mnt/tmp # du -s /mnt/tmp; df /mnt/tmp 20 /mnt/tmp Filesystem 1K-blocks Used Available Use% Mounted on /dev/hda8 13638436 33824 12911812 1% /mnt/tmp So, there's a 33+MB difference on a fresh, empty ext2 file system. Looking at the file system with debugfs, I find inode 7 is a regular file of size 4299210752 and a block count of 67608. That's a huge sparse file. A little research shows that this is the "resize inode" that reserves space for future GDT blocks so that the file system can be expanded in place. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Ryan Pugatch wrote: > > Oh, and no sparse files either :) Last time I saw this issue, no sparse files, nothing legit, it was a corrupted FS. :( -- Florin Andrei http://florin.myip.org/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
On Wed, Sep 30, 2009 at 5:34 PM, Les Mikesell wrote: > But even with old-school phone switches, your support contract would > require software updates at regular intervals and unless you had > redundant hot-failover equipment, that would involve scheduled downtime. Not with Nortel. Patches were optional -- updates, new features and additional licenses were sold as separate products. That's in the PBX (Option) line of switches (almost all of which have been "dual core" -- redundant -- for about 25 years). In the Key System switches (Norstar), patches were unavailable, though you could buy keycodes to enable additional features. If you wanted to update you bought a new version of the software on a flash medium (if one was available). Traditional telephone switches are expected to up 24/7 unless you are doing a major upgrade -- and that's usually scheduled months in advance. The goal is to achieve the "five 9s" (99.999% up time). -- RonB -- Using CentOS 5.3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Florin Andrei wrote: > Last time I saw this issue, no sparse files, nothing legit, it was a > corrupted FS. :( > Well, if I mount to another directory the size is right. My next step will be to fsck probably. Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] du vs df size difference
Clint Dilks wrote: > Hi, > > He means a situation where you have something this this > > You create a partion lets say /dev/hda1 you use it as you / partition > you create a directory called /data and copy some data into it > You then have a second partiton /dev/hda2 and you mount /dev/hda2 off of > /data > > This mean that the data originally copied to the /data directory on hda1 > is still taking up space on hda1 but you cant see it. In this case, if I mount my partition to, say, /mnt/tmp, it would still show the 'wrong' size. In my situation, it did not, so that indicates this is not my issue. Ryan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SATA cards?
On Wed, Sep 30, 2009 at 2:52 PM, ML wrote: > I have a server that is IDE drives and I dont have any so I wanted to > put in a sata PCI card. > > Will CentOS be able to see the drives as they will be connected to the > card? That's certainly the goal! :-) In addition to the linux-ata link already mentioned, you might review this CentOS mailing list thread about cards: http://lists.centos.org/pipermail/centos/2009-September/082549.html -- Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SATA cards?
At Wed, 30 Sep 2009 18:31:11 -0400 CentOS mailing list wrote: > > If the SATA controller is supported then CentOS will be able to see > the drives. You might have a look at > http://linux-ata.org/driver-status.html *Some* SATA controllers (at least NV's ahci on-board ones) seem to need the irqpoll kernel option to work. > > On Wed, Sep 30, 2009 at 5:52 PM, ML wrote: > > Hi All, > > > > I have a server that is IDE drives and I dont have any so I wanted to > > put in a sata PCI card. > > > > Will CentOS be able to see the drives as they will be connected to the > > card? > > > > -ML > > ___ > > CentOS mailing list > > CentOS@centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- Robert Heller -- 978-544-6933 Deepwoods Software-- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows hel...@deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS Enterprise IPA (Identity, Policy, and Audit) Server
I have just completed building the RPMS for the CentOS Enterprise IPA (Identity, Policy, and Audit) Server. This is based on the sources from the Red Hat Enterprise IPA server. Documentation can be downloaded here: http://www.centos.org/docs/5/pdf/eipa/1.0/ The RPMS are located in the testing repository. http://dev.centos.org/centos/5/testing/SRPMS/CEIPA/ http://dev.centos.org/centos/5/testing/i386/RPMS/CEIPA/ http://dev.centos.org/centos/5/testing/x86_64/RPMS/CEIPA/ For anyone who wants to test EIPA, please install and provide feedback on this thread: http://bugs.centos.org/view.php?id=3880 Thanks, Johnny Hughes signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS Enterprise IPA (Identity, Policy, and Audit) Server
Neat! Thanks! -Kristopher Kane ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS Enterprise IPA (Identity, Policy, and Audit) Server
On 09/30/2009 07:43 PM, Johnny Hughes wrote: > I have just completed building the RPMS for the CentOS Enterprise IPA > (Identity, Policy, and Audit) Server. > > This is based on the sources from the Red Hat Enterprise IPA server. > > Documentation can be downloaded here: > > http://www.centos.org/docs/5/pdf/eipa/1.0/ > > The RPMS are located in the testing repository. > > http://dev.centos.org/centos/5/testing/SRPMS/CEIPA/ > > http://dev.centos.org/centos/5/testing/i386/RPMS/CEIPA/ > > http://dev.centos.org/centos/5/testing/x86_64/RPMS/CEIPA/ > > For anyone who wants to test EIPA, please install and provide feedback > on this thread: > > http://bugs.centos.org/view.php?id=3880 > I forgot to mention that the CentOS Directory Server is already part of the regular CentOS Extras repository, and should install from there as a dependency for CentOS EIPA signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: What's wrong with RAID5
On 09/24/2009 07:35 AM, Rainer Duffner wrote: > > Am 24.09.2009 um 07:43 schrieb Fajar Priyanto: > >> Hi all, >> Sorry for the OT. >> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1. >> The problem is, from the docs it says that it only supports either >> RAID-DP or RAID4. >> What I want to achieve is Max Storage Capacity, so I change it from >> RAID-DP to RAID4, but with RAID4, the maximum disk in a RAID Group >> decrease from 14 to 7. In the end, either using RAID-DP or RAID4, the >> capacity is the same. >> >> Now, why RAID5 is not supported? I believe using RAID5, I can get more >> storage capacity, can't I? >> I also notice with some onboard RAID controller, they only support >> either RAID0, RAID1, or RAID1+0. No RAID5. >> >> What's wrong with RAID5, is there any technical limitation with RAID5? > > > > Well, it depends on the disk-size: > http://www.enterprisestorageforum.com/technology/features/article.php/3839636 This info is VERY relevant ... you will almost ALWAYS have a failure on rebuild with very large RAID 5 arrays. Since that is a fault in a second drive, that failure will cause the loss of all the data. I would not recommend RAID 5 right now ... it is not worth the risk. signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: What's wrong with RAID5
On Wed, Sep 30, 2009 at 08:52:08PM -0500, Johnny Hughes wrote: > On 09/24/2009 07:35 AM, Rainer Duffner wrote: > > Well, it depends on the disk-size: > > http://www.enterprisestorageforum.com/technology/features/article.php/3839636 > > This info is VERY relevant ... you will almost ALWAYS have a failure on > rebuild with very large RAID 5 arrays. Since that is a fault in a > second drive, that failure will cause the loss of all the data. I would > not recommend RAID 5 right now ... it is not worth the risk. "Almost always" is very dependent on the disks and size of the array. Let's take a 20TiByte array as an example. Now, the "hard error rate" is an expectation. That means that with an error rate of 1E14 then you'd expect to see 1 error for every 1E14 bits read. If we make the simplifying assumption of any read being equally likely to fail then any single bit read has a 1/1E14 chance of being wrong. (see end of email for more thoughts on this). Now to rebuild a 20Tibyte array you would need to read 20Tibytes of data. The chance of this happening without error is: (1-1/1E14)^(8*20*2^40) = 0.172 ie only 17% of rebuilding a 20TiByte array! That's pretty bad. In fact it's downright awful. Do not build 20TiByte arrays with consumer disks! Note that this doesn't care about the size of the disks nor the number of disks; it's purely based on probability of read error. Now an "enterprise" class disk with an error rate of 1E15 looks better: (1-1/1E15)^(8*10*2^40) = 0.838 or 84% chance of successful rebuild. Better. But probably not good enough. How about an Enterprise SAS disk at 1E16 (1-1/1E16)^(8*12.5*2^40) = 0.981 or 98% Not "five nines", but pretty good. Of course you're never going to get 100%. Technology just doesn't work that way. So, if you buy Enterprise SAS disks then you do stand a good chance of rebuilding a 20TiByte Raid 5. A 2% chance of a double-failure. Do you want to risk your company on that? RAID6 makes things better; you need a triple failure to cause data loss. It's possible, but the numbers are a lot lower. Of course the error rate and other disk characteristics are actually WAGs based on some statistical analysis. There's no actual measurements to show this. Real life numbers appear to show that disks far outlive their expected values. Error rates are much lower than manufacturer claims (excluding bad batches and bad manufacturing, of course!) This is just a rough "off my head" analysis. I'm not totally convinced it's correct (my understanding of error rate could be wrong; the assumption of even failure distribution is likely to be wrong because errors on a disk cluster - a sector is bad, a track is bad etc). But the analysis _feels_ right... which means nothing :-) I currently have 5*1Tbyte consumer disks in a RAID5. That, theoretically, gives me a 27% chance of failure during a rebuild. As it happens I've had 2 bad disks, but they went bad a month apart (I think it is a bad batch!). Each time the array has rebuilt without detectable error. Let's not even talk about Petabyte arrays. If you're doing that then you better have multiple redundancy in place, and the expense! Google is a great example of this. -- rgds Stephen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: What's wrong with RAID5
Slightly OT... Opensolaris has just had triple parity raid (raidz3) added to ZFS; http://blogs.sun.com/ahl/entry/triple_parity_raid_z Pity we can't get an in kernel version of ZFS for linux. On Thu, Oct 1, 2009 at 12:41 PM, Stephen Harris wrote: > On Wed, Sep 30, 2009 at 08:52:08PM -0500, Johnny Hughes wrote: > > On 09/24/2009 07:35 AM, Rainer Duffner wrote: > > > > Well, it depends on the disk-size: > > > > http://www.enterprisestorageforum.com/technology/features/article.php/3839636 > > > > This info is VERY relevant ... you will almost ALWAYS have a failure on > > rebuild with very large RAID 5 arrays. Since that is a fault in a > > second drive, that failure will cause the loss of all the data. I would > > not recommend RAID 5 right now ... it is not worth the risk. > > "Almost always" is very dependent on the disks and size of the array. > > Let's take a 20TiByte array as an example. > > Now, the "hard error rate" is an expectation. That means that with > an error rate of 1E14 then you'd expect to see 1 error for every 1E14 > bits read. If we make the simplifying assumption of any read being > equally likely to fail then any single bit read has a 1/1E14 chance of > being wrong. (see end of email for more thoughts on this). > > Now to rebuild a 20Tibyte array you would need to read 20Tibytes > of data. The chance of this happening without error is: >(1-1/1E14)^(8*20*2^40) = 0.172 > ie only 17% of rebuilding a 20TiByte array! That's pretty bad. In > fact it's downright awful. Do not build 20TiByte arrays with consumer > disks! > > Note that this doesn't care about the size of the disks nor the number > of disks; it's purely based on probability of read error. > > Now an "enterprise" class disk with an error rate of 1E15 looks better: >(1-1/1E15)^(8*10*2^40) = 0.838 > or 84% chance of successful rebuild. Better. But probably not good > enough. > > How about an Enterprise SAS disk at 1E16 >(1-1/1E16)^(8*12.5*2^40) = 0.981 or 98% > Not "five nines", but pretty good. > > Of course you're never going to get 100%. Technology just doesn't work > that way. > > So, if you buy Enterprise SAS disks then you do stand a good chance > of rebuilding a 20TiByte Raid 5. A 2% chance of a double-failure. > Do you want to risk your company on that? > > RAID6 makes things better; you need a triple failure to cause data loss. > It's possible, but the numbers are a lot lower. > > Of course the error rate and other disk characteristics are actually WAGs > based on some statistical analysis. There's no actual measurements to > show this. > > Real life numbers appear to show that disks far outlive their expected > values. Error rates are much lower than manufacturer claims (excluding > bad batches and bad manufacturing, of course!) > > This is just a rough "off my head" analysis. I'm not totally convinced > it's correct (my understanding of error rate could be wrong; the > assumption of even failure distribution is likely to be wrong because > errors on a disk cluster - a sector is bad, a track is bad etc). But the > analysis _feels_ right... which means nothing :-) > > I currently have 5*1Tbyte consumer disks in a RAID5. That, theoretically, > gives me a 27% chance of failure during a rebuild. As it happens I've had > 2 bad disks, but they went bad a month apart (I think it is a bad batch!). > Each time the array has rebuilt without detectable error. > > Let's not even talk about Petabyte arrays. If you're doing that then > you better have multiple redundancy in place, and the expense! > Google is a great example of this. > > -- > > rgds > Stephen > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT: What's wrong with RAID5
Stephen Harris wrote: > "Almost always" is very dependent on the disks and size of the array. > > Let's take a 20TiByte array as an example. > ... he did say 'very large'. note, raid10 has another parameter... say you have a 20 drive raid10 of 1TB drives (10TB total usable). if one drive fails, a rebuild only requires reading one drive and writing the hotspare replacement, this is fairly quick compared with the massive restripe operation of a raid5. and, if during that rebuild operation, another drive fails, there's only a 1 in 19 odds of it being the mirror of the previously failed drive if we assume failures are a totally random occurance (yeah, ok, if we assume that a drive is more likely to fail when its being accessed, then the odds are soemwhat higher tha mirror would fail then another drive in the array but, an array that does periodic sweeps on idle storage will greatly reduce the possibility of this by 'discovering' a failing drive much sooner. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] ignore please.
testing email delivery ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
>> When you say go voip, do you mean use sip for the stations only or also >> for the trunks? >> > > My experience (and the experience of those I know) is that SIP trunks > don't really work consistently. But, when I say I need to learn VOIP > I'm mostly talking about the station side. My goal is to learn enough > to build Asterisk boxes to replace key systems. I like the idea of > Asterisk because it can use standard trunks for critical lines and SIP > trunks for specialized purposes or overflow. (At least that's what I > *think* it can do.) > > Ah, well, if you want to keep the landlines, then yeah, I guess asterisk is the way to go. If your goal is to replace keyline systems, then asterisk definitely has that kind of support which, it appears, even Cisco's solution does not (from the mouth of Datacraft Asia personnel selling the school Cisco's voip solution). It can certainly do what you said about using standard trunks for critical lines (extra 'switch' to a plain pots phone on the trunk line in case you lose all power) and sip trunks for specialized purposes or overflow. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.3 LDAP problem.
2009/9/30 Miguel Medalha : > in /etc/ldap.conf: > bind_policy soft I may not have used the right terminology, but I mentioned this in my first message: >> They all obtain their authentication information over LDAP and to avoid the >> starting message bus hang problem[1], nscd is set to soft failure. Works for the others, just not this one. Ben ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
Sorin Srbu wrote: >> -Original Message- >> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On >> > Behalf > >> Of Marcelo M. Garcia >> Sent: Tuesday, September 29, 2009 10:36 PM >> To: CentOS mailing list >> Subject: Re: [CentOS] CentOS for non-tech user >> >> >>> Not using, but I've tried it in a LAMP-configuration couple of years ago. >>> Stability seems ok, but personally I don't like the sudo this and sudo >>> > that > >>> and sudo everywhere. Besides, it felt somehow clunky. CentOS seemed slim, >>> slick and fast compared at the time, so CentOS is what I got stuck with >>> > (in > >>> an endearing sense of course). >>> >>> HTH. >>> >> Hi Sorin >> >> You can "sudo bash" and you will have a root terminal. In it, you can >> set the root password for root. >> > > Yupp, as I said, at the time I was testing Ubuntu, I was rather green and > didn't know about those little tricks. Now is a another matter, but I still > prefer CentOS. Besides, opening a terminal and typing in "su -" is way > faster. Saves keystrokes. > And I can't believe I just write that...! I sound like a linux > die-hard... > Just try Solaris or FreeBSD then. That should make you a Linux die-hard. :-D ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.3 LDAP problem.
Think I might just wait for v5.4 and try that. Ben ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
>-Original Message- >From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf >Of Christopher Chan >Sent: Wednesday, September 30, 2009 9:42 AM >To: CentOS mailing list >Subject: Re: [CentOS] CentOS for non-tech user > >> Yupp, as I said, at the time I was testing Ubuntu, I was rather green and >> didn't know about those little tricks. Now is a another matter, but I still >> prefer CentOS. Besides, opening a terminal and typing in "su -" is way >> faster. Saves keystrokes. >> And I can't believe I just write that...! I sound like a linux >> die-hard... >> >Just try Solaris or FreeBSD then. That should make you a Linux die-hard. :-D Solaris; check. Didn't like, it was just weird. So there. ;-) -- /Sorin smime.p7s Description: S/MIME cryptographic signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] cups-lpd job settings
Does someone know, how to configure cups lpd job options.
My xinet.d config looks like this:
# default: off
# description: Allow applications using the legacy lpd protocol to
communicate w
ith CUPS
service printer
{
disable = no
socket_type = stream
protocol = tcp
wait = no
user = lp
server = /usr/lib/cups/daemon/cups-lpd
server_args = -o job-sheets=none,none -o cpi=12
}
The problem is, that it cups ignores the second option under server_args. I
checked the documentation and googled quite a lot, but I couldn't find an
example with more then one option.
BR
Janez
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Re: [CentOS] CentOS for non-tech user
On 09/29/2009 06:21 PM, Drew wrote: > Websites for example > have moved from static html on the arpanet& university sites to the > rich multimedia content we see today. Back then the idea of a website > infecting a computer was unheard of. For completelness sake - website content hasent changed an inch in the last 15 years. What is served is still static content - it gets richer on the client side, nothing has changed on the server end at all. All your flash and css and js and whatnot are just static files served out. w.r.t dynamic served content, SSI and cgi content has been around since the early days that lets you do most of what is being done these days ( remember, its not the client we are talking about here ). - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
On 09/29/2009 06:38 PM, Florin Andrei wrote: > I agree with your assessment that Red Hat& Co are still The > Distribution for enterprise stuff. Where Enterprise Stuff == 'Stable computing where you can focus on doing things with your computer and know that when you want to, it will be there - hardware permitting - in the same state you left it, even after security updates are applied'[1] - KB [1]: Ok, so there have been some exceptions. But they are rare and far in between. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
Niki Kovacs wrote: > Geoff Galitz a écrit : > >> Ubuntu has the LTS releases, which are long term stable releases. They are >> supported for five years after release. >> > Ubuntu Long Term Support is three years for desktops and five for servers. > > In the last LTS version (8.04), half of the audio apps had no sound for > a month or so, until Ubuntu fixed the problems with Pulseaudio. At the > time, I had given Ubuntu 8.04 a shot in our public libraries and had > some very embarrassing moments. > > Solution: stick with CentOS, rock-solid and *real* LTS. But that means you have to wait many years for new features - that you probably want in rapidly developing desktop apps. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
Ron Blizzard wrote: > On Tue, Sep 29, 2009 at 3:09 PM, Tait Clarridge wrote: > > >> CentOS is great for server use and if you want to learn CentOS for use >> as a server, Fedora is a great place to start because they are both >> redhat based. Chances are that if you got something to work in Fedora, >> you can get it to work in CentOS (maybe with a few extra tweaks). >> > > I don't have any servers. I like CentOS on my desktop and my laptop > just because it's solid. It's also the Linux distribution of choice > for most Asterisk platforms -- which I intend to (eventually) learn. > (I'm a telephone tech, who is eventually going to have to go VOIP.) > > You can get asterisk packages from rpmforge on Centos...but on Ubuntu you do not have to add an extra repository to get asterisk. When you say go voip, do you mean use sip for the stations only or also for the trunks? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
On 09/30/2009 02:11 PM, Les Mikesell wrote: >> Solution: stick with CentOS, rock-solid and *real* LTS. > > But that means you have to wait many years for new features - that you > probably > want in rapidly developing desktop apps. thats not always true - it is to some extent though. And the 'long term' usually translates into 18 months. Most people, in real life - specially those that are not involved with technology on a daily basis can easily live with that. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
>> I don't have any servers. I like CentOS on my desktop and my laptop >> just because it's solid. It's also the Linux distribution of choice >> for most Asterisk platforms -- which I intend to (eventually) learn. >> (I'm a telephone tech, who is eventually going to have to go VOIP.) Have a look at FreeSwitch as well:) >You can get asterisk packages from rpmforge on Centos...but on Ubuntu >you do not have to add an extra repository to get asterisk. Don't bother with that, go straight to the source! http://packages.asterisk.org/ These get updated rather quickly. jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] [JOB] Linux Sysadmin, London
Hello, I've been asked to recruit a Linux Systems Administrator for one of our clients. They're based in London, but I know many folk who commute from Hampshire, so here's the spec: Job:Systems Administrator Company:Wordtracker Location: Kentish Town, London, NW5 (excellent transport) Salary: £45K Culture:No tie. Agile development Hours: PAYE, 5 days a week (Monday - Friday), min 35 hrs, flexible but core office hours are from 11am - 5pm. Benefits: Free food on Friday! 23 days holiday & pension. THE COMPANY Wordtracker is a small company of around 15 people and our offices are based in Kentish Town, London. Roughly half of the people are developers mainly using: PHP, Ruby (and Ruby on Rails) and agile development. We specialise in: keywords, data analysis, mining and extracting meaning out of online data. Our primary product is the keyword research tool, Wordtracker (http://www.wordtracker.com), which has been serving keywords to customers for over 10 years (since 1998). THE CULTURE Wordtracker has been using agile and extreme programming across our company since we started and as a result our roles includes pairing time with other developers and management. The style is informal (a tie free zone). Most of what we do we haven't done before, so Wordtracker is very much a learning organisation. THE CHALLENGE Wordtracker is a large technically complicated environment, much of which has been built from scratch. In addition to maintaining a business-critical web front-end, there is a significant amount of batch processing and database work involved in keeping Wordtracker running. Most of this infrastructure is very highly automated. We need someone to join the team, assimilate quickly a deep and diverse body of knowledge, get their head around the system and work to improve it continuously. THE ROLE Personality: * Open and communicative * Commercially aware * Comfortable working with Agile Methodologies Experience: * Fluent in sysadmin tools, including Puppet and Nagios * Experienced with version control (git) * Comfortable working with scripting languages, Bash and the Unix command line, particularly in a web environment * Open to working within iterations; estimating tasks; familiar with pairing * Experience with high availability systems Platform: * CentOS & RedHat (RH Certificate welcome) Technologies: * Web servers - (NginX, Apache, Passenger) * Virtualisation (Xen and VM Ware) * Databases (MySQL, Postgres) * Automation tools (e.g. Puppet and Chef) * Monitoring tools (Nagios) * Firewalls (iptables) * Storage (SAN, NFS, Samba) * Packaging (RPMs) * Mac support (no windows support needed) If this interests you please contact me off list, ASAP. Thanks, S. -- Stephen Nelson-Smith Technical Director Atalanta Systems Ltd www.atalanta-systems.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
- "Joseph L. Casale" wrote: > >You can get asterisk packages from rpmforge on Centos...but on > Ubuntu > >you do not have to add an extra repository to get asterisk. > > Don't bother with that, go straight to the source! > http://packages.asterisk.org/ > These get updated rather quickly. > > jlc +1 for this suggestion. Starting out it may be easier to pull packages from a repo if you're not familiar with building from source. BUT, in the long run, you'll need to learn it. When a security vulnerability is fixed, you don't want to wait any longer than necessary for the package maintainer to get around to updating. Just grab the source and build. Also, the packages don't always have all the functionality you may require (codecs, modules, etc). There are plenty of docs on how to do this as well as many helpful people on the Asterisk-Users mailing list. Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
>> Don't bother with that, go straight to the source! >> http://packages.asterisk.org/ >> These get updated rather quickly. >> >> jlc > >+1 for this suggestion. > >Starting out it may be easier to pull packages from a repo if you're not >familiar with building from source. BUT, in the long run, you'll need to learn >it. When a security >vulnerability is fixed, you don't want to wait any longer >than necessary for the package maintainer to get around to updating. Just grab >the source and build. Also, the packages >don't always have all the >functionality you may require (codecs, modules, etc). There are plenty of docs >on how to do this as well as many helpful people on the Asterisk-Users >>mailing list. You completely misunderstood my suggestion, and actually suggested something I learned a long time ago to never do:) The url as suggested by the name, *is* an rpm package repo. As I said, the packager gets these built with new releases and/or kernel updates very fast. Compiling software and bypassing the package mangler is always a risk for trouble down the road. Given the many deps Asterisk may require, its simpler to use this repo versus compiling. An aside as well, I see many people on this list always concerned with vulns and patches and always eager to simply `yum update`. FWIW, if the vuln doesn't affect you, it's not a vuln for *you*. You may not have the module installed/active or in my case, the internet facing exposure is limited to an VSP who I *very much* doubt would use my system to dial for free based on one of the recent vulns. I wouldn't panic about being at risk for vulns *just because* a vuln exists, it may not affect you. I had an Ast box running without a reboot or update in almost a year cuz I couldn't get the window. Its exposure was so highly minimized that it wasn't even a consideration. None of the updates pertaining to stability were ever applicable either to my best knowledge so I didn't worry... jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS for non-tech user
Karanbir Singh wrote: > On 09/30/2009 02:11 PM, Les Mikesell wrote: >>> Solution: stick with CentOS, rock-solid and *real* LTS. >> But that means you have to wait many years for new features - that you >> probably >> want in rapidly developing desktop apps. > > thats not always true - it is to some extent though. And the 'long term' > usually translates into 18 months. Most people, in real life - specially > those that are not involved with technology on a daily basis can easily > live with that. I'd say 3 or 4 years would be more realistic if you look at time from the feature freeze on one enterprise release until the next one ships - which amounts to a lot of changes that other distos will include. Even on the server side, 5.x is starting to show its age. For example, I'd like to be able to rewrite absolute URL's embedded in the content in sites handled through apache's ProxyPass but mod_substitute was added in apache 2.2.7 and we still only have 2.2.3. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Asterisk and VOIP was Re: CentOS for non-tech user
>> You can get asterisk packages from rpmforge on Centos...but on Ubuntu >> you do not have to add an extra repository to get asterisk. >> > > Don't bother with that, go straight to the source! > http://packages.asterisk.org/ > These get updated rather quickly. > Ah, now that will definitely change my view of distro choice...no more waiting for latest packages. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] How to autoconfigure network?
Hello, I have installed new network card under CentOS 5.3, but there are some problems. I want delete existing ifcfg-eth0 and automatically make new on as it is during OS installation process. Is it possible? Thank you ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
Do you wish to configure it using a DHCP server? On Wed, Sep 30, 2009 at 11:45 AM, happymaster23 wrote: > Hello, > > I have installed new network card under CentOS 5.3, but there are some > problems. I want delete existing ifcfg-eth0 and automatically make new > on as it is during OS installation process. Is it possible? > > Thank you > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- http://www.goldwatches.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
No, I want create files /etc/sysconfig/network-scripts/ifcfg-eth0 and others... 2009/9/30 James Matthews > Do you wish to configure it using a DHCP server? > > On Wed, Sep 30, 2009 at 11:45 AM, happymaster23 > wrote: > >> Hello, >> >> I have installed new network card under CentOS 5.3, but there are some >> problems. I want delete existing ifcfg-eth0 and automatically make new >> on as it is during OS installation process. Is it possible? >> >> Thank you >> ___ >> CentOS mailing list >> CentOS@centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > > > > -- > http://www.goldwatches.com > > > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to autoconfigure network?
2009/9/30 happymaster23 : > No, I want create files /etc/sysconfig/network-scripts/ifcfg-eth0 and > others... Try running setup Ben ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Gathering information about RAM in sockets
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi list, I have an IBM xseries 345, running CentOS 5.3, hosting a few Xen domUs. However, I need more RAM -- but cannot remember if all (four) RAM sockets are populated (which would mean to buy higher capacity modules) or if there are two slots left to use. However, I'd like (and think that it's possible, but don't remember how) to check remotely. dmesg's first lines: Linux version 2.6.18-164.el5xen (mockbu...@builder16.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Thu Sep 3 04:47:32 EDT 2009 BIOS-provided physical RAM map: Xen: - 2080 (usable) 0MB HIGHMEM available. 520MB LOWMEM available. Using x86 segment limits to approximate NX protection On node 0 totalpages: 133120 DMA zone: 133120 pages, LIFO batch:31 DMI 2.3 present. ACPI: RSDP (v000 IBM ) @ 0x000fdfc0 ACPI: RSDT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdff80 ACPI: FADT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdff00 ACPI: MADT (v001 IBMSERONYXP 0x1000 IBM 0x45444f43) @ 0x7ffdfe40 ACPI: ASF! (v016 IBMSERONYXP 0x0001 IBM 0x45444f43) @ 0x7ffdfd80 ACPI: DSDT (v001 IBMSERGEODE 0x1000 MSFT 0x010b) @ 0x ACPI: Local APIC address 0xfee0 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x06] enabled) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled) ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x07] dfl dfl lint[0x1]) ACPI: IOAPIC (id[0x0e] address[0xfec0] gsi_base[0]) IOAPIC[0]: apic_id 14, version 17, address 0xfec0, GSI 0-15 ACPI: IOAPIC (id[0x0d] address[0xfec01000] gsi_base[16]) IOAPIC[1]: apic_id 13, version 17, address 0xfec01000, GSI 16-31 ACPI: IOAPIC (id[0x0c] address[0xfec02000] gsi_base[32]) IOAPIC[2]: apic_id 12, version 17, address 0xfec02000, GSI 32-47 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) ACPI: IRQ0 used by override. ACPI: IRQ2 used by override. ACPI: IRQ5 used by override. Enabling APIC mode: Flat. Using 3 I/O APICs Using ACPI (MADT) for SMP configuration information Built 1 zonelists. Total pages: 133120 Kernel command line: ro root=/dev/VG00/VG_root Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Initializing CPU#0 CPU 0 irqstacks, hard=c075 soft=c073 PID hash table entries: 4096 (order: 12, 16384 bytes) Xen reported: 3059.962 MHz processor. Console: colour VGA+ 80x25 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Software IO TLB enabled: Aperture: 2 megabytes (...) Any hints? Thanks in advance, Timo -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with CentOS - http://enigmail.mozdev.org/ iD8DBQFKw42gO/2mgkVVV7kRAsXnAJ9RTvHcvPeMBzDY5a3OOzLPKhY7ygCgiFGy FIJCYVvuTxAlvy59u5/HA9g= =/OwG -END PGP SIGNATURE- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
