Re: [CentOS] CentOSn7 & graphite-web RPM
Am 28.01.2015 um 08:08 schrieb Philip Keogh: For EPEL's process, see their web site (which also contains a procedure for getting package updates created and finding the maintainer of a package that you are interested in): https://fedoraproject.org/wiki/EPEL/GuidelinesAndPolicies In the case of graphite-web, that data is here: https://admin.fedoraproject.org/pkgdb/package/graphite-web/ The package has been approved for inclusion in EPEL 7 but was not yet built/released and is not in testing. (as per guidelines minimum of 2 weeks in testing prior to release) The only person who can give you their plans for a specific package is the point of contact package administrator, jsteffan in this case. Typically these things go faster if someone takes the initiative in testing an updated .spec and package, sending the SRPM to the maintainer instead of a request for them to drop what they are doing to start a project for your needs. Thanks a lot for taking the time to answer my "nosy" questions. If you are prioritizing "stability" CentOS 7 seems like a dubious choice to begin with though. That's as always "in the eye of the beholder" ;) Cheers, Shorty ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-announce Digest, Vol 119, Issue 10
Send CentOS-announce mailing list submissions to centos-annou...@centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-requ...@centos.org You can reach the person managing the list at centos-announce-ow...@centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEEA-2015:X002 Xen and LibVirt Xen4CentOS Enhancement Update (Johnny Hughes) 2. CEBA-2015:0089 CentOS 6 gdbm FASTTRACK BugFix Update (Johnny Hughes) 3. CESA-2015:0090 Critical CentOS 5 glibc Security Update (Karanbir Singh) 4. CESA-2015:0092 Critical CentOS 6 glibc Security Update (Karanbir Singh) 5. CESA-2015:0092 Critical CentOS 7 glibc Security Update (Karanbir Singh) -- Message: 1 Date: Tue, 27 Jan 2015 13:06:44 + From: Johnny Hughes To: centos-annou...@centos.org Subject: [CentOS-announce] CEEA-2015:X002 Xen and LibVirt Xen4CentOS Enhancement Update Message-ID: <20150127130644.ga37...@n04.lon1.karan.org> Content-Type: text/plain; charset=iso-8859-1 CentOS Errata and Enhancement Advisory 2015:X002 (Xen4CentOS) The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) - x86_64 - cdfc144852265d5b5d5ad929bc5b31159a6ca859715ba795134e2b85fe7e3399 libvirt-1.2.10-3.el6.x86_64.rpm 5c9b50eae196a3beb710b1aa37ef212d1fb19062a3e0a0a0b1448c3e38695898 libvirt-client-1.2.10-3.el6.x86_64.rpm f75375eca3a0088aa9a537dda0cdebc047bb74fc24364b0f75a3f3315ea5fee1 libvirt-daemon-1.2.10-3.el6.x86_64.rpm 04a7c8d378aaa85aa0962afa24193df37bc884a4f0f812c82f196d9657f6faea libvirt-daemon-config-network-1.2.10-3.el6.x86_64.rpm f6b969d3c89e4f7d10b18464f5a5b7d8b4627bba8194426a4f528d572ef9b378 libvirt-daemon-config-nwfilter-1.2.10-3.el6.x86_64.rpm 89a220c0964427ec8e914d7fe01c799e1223c1a0ccbf6e9c9a8b722dbfb2e6c2 libvirt-daemon-driver-interface-1.2.10-3.el6.x86_64.rpm d52b96cd2cbb807e93a74970d4309f2ff0b8a5c5030918cfa74b070152b561ef libvirt-daemon-driver-libxl-1.2.10-3.el6.x86_64.rpm 14e49bd64281368826a4d7bff9dcebe63f7693fd6b50e681febf515b09ae098b libvirt-daemon-driver-lxc-1.2.10-3.el6.x86_64.rpm 48dbc513689a93689eb89ea514ee7fee560d66a6f8d49e61424fcfa155105308 libvirt-daemon-driver-network-1.2.10-3.el6.x86_64.rpm dfa11209f31bedf18938d85eb12456d82d46af84070fe4f47e5521a3f4fcbfea libvirt-daemon-driver-nodedev-1.2.10-3.el6.x86_64.rpm 46e6872c93140df1aa662470b4e72fe49b960412b059c32b5d2128ce6f61a10e libvirt-daemon-driver-nwfilter-1.2.10-3.el6.x86_64.rpm 23233e23f9e41d47a7f7489647e308394f94018b4789a225a6df6b49291ecbf0 libvirt-daemon-driver-qemu-1.2.10-3.el6.x86_64.rpm 9ab5624fcfed9a1401b46b458bb23aded8bc603e2ba10e267a12eec64c7ec683 libvirt-daemon-driver-secret-1.2.10-3.el6.x86_64.rpm 464f904baea4beec68fe90708c2895e697f215551d423a5dc9950c6f2df672b4 libvirt-daemon-driver-storage-1.2.10-3.el6.x86_64.rpm 1f6242a8ca12578bb7c0046e604e87caa13a3b2bfcae0e2a75d8d7d957d77837 libvirt-daemon-driver-xen-1.2.10-3.el6.x86_64.rpm 9dcf36b9708b145df230de9e4967a880620d5fbb91c874c34b0a06110b2fcb0f libvirt-daemon-kvm-1.2.10-3.el6.x86_64.rpm 521e8fd3fe56d00c3ed9b4b83fbf8d145fd0cb40ed57ca163cf4dad065d0c83e libvirt-daemon-lxc-1.2.10-3.el6.x86_64.rpm 604a476a2cb73578411d1780e915ec12ef5421c4ddd1c6501af8baedddb11b05 libvirt-daemon-xen-1.2.10-3.el6.x86_64.rpm ada1948fb39ff73b9462b3b4a88d83650768811da6cf041dfc82c8cb4440ca3c libvirt-devel-1.2.10-3.el6.x86_64.rpm 12b7d939d5bbb902d19c9f10ab1d0e09b7d6f2569d6c08d361faa7a078537580 libvirt-docs-1.2.10-3.el6.x86_64.rpm 9b5966f617704138b57c0158ffc24bd722e3c45fc163c4b57fbb78a6a46bab3f libvirt-lock-sanlock-1.2.10-3.el6.x86_64.rpm cf3c8b24dd749d3a58502153e68908ee7d7f6c935a24a42c1939d776a394ad34 libvirt-login-shell-1.2.10-3.el6.x86_64.rpm 4a6fefb92c51a8c808519c14c0f05bf4bba5d15cc6c80a9189233cea429f81f3 libvirt-python-1.2.10-2.el6.x86_64.rpm cfb51d27393b89ce9ea778c90fc78387e1bbd66ee526900f4d1d30b0ce2939f2 xen-4.4.1-5.el6.x86_64.rpm 8112529df37665282b18ac255024a5298b4a0d2c3b43047feb2411d04bb8493b xen-devel-4.4.1-5.el6.x86_64.rpm eceef9fe592a624c58321095223f1694aaeafc5188d7af2a63545169ce4c2935 xen-doc-4.4.1-5.el6.x86_64.rpm 2604e220fb3bd9dade6f032eb3688770dec07969b4000dbeda0d950fb94f647d xen-hypervisor-4.4.1-5.el6.x86_64.rpm 8645ef7f6d40c2f1374d4749dafa30e636db78650e262b9f3c7208748234be47 xen-libs-4.4.1-5.el6.x86_64.rpm d7e292c6593100328b324451bcb71ffd5aca25748826af1e67bca0950d611674 xen-licenses-4.4.1-5.el6.x86_64.rpm 81b62af7f92f6df99e85678ba7b5856006673f04b27c9d3cc9e437f702879f39 xen-ocaml-4.4.1-5.el6.x86_64.rpm 2b6fe42c4e34cc6b41a7e7ee3c7409db10a606ff4cf90dfbf6f4dcccd6adf2de xen-ocaml-devel-4.4.1-5.el6
[CentOS] Very slow disk I/O
Hi Users I am using RHEL 6.5 on my server. From top command i can see that the processors in my server are spending a lot of time on wait for I/O. I can see high percentage in terms of 30-50% on "wa" time. Here is the df output about the disk space in my system: ** [root@localhost images]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 1915071844 103227908 1714563936 6% / tmpfs32931472 0 32931472 0% /dev/shm ** Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. Thanks Jatin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
On 01/28/2015 01:32 PM, Jatin Davey wrote: Hi Users I am using RHEL 6.5 on my server. From top command i can see that the processors in my server are spending a lot of time on wait for I/O. I can see high percentage in terms of 30-50% on "wa" time. Here is the df output about the disk space in my system: ** [root@localhost images]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 1915071844 103227908 1714563936 6% / tmpfs32931472 0 32931472 0% /dev/shm ** Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. you could use iotop or vmstat to see what processes are causing the IO. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] C6 server responding extremely slow on ssh interactive
I have a C6 server acting as a kvm-host. When connecting with ssh the console is extremely slow and hangs for minutes at a time. Connecting to this server is not the problem. If I use: ssh root@host "whatever" I got immediate response even when interactive consoles opened with ssh are hanging. Linux [...] 2.6.32-504.3.3.el6.x86_64 #1 SMP Wed Dec 17 01:55:02 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux total used free shared buffers cached Mem:47 35 11 0 0 0 -/+ buffers/cache: 35 11 Swap:7 0 7 FilesystemSize Used Avail Use% Mounted on /dev/mapper/vg-lv_root 50G 6,4G 41G 14% / tmpfs 24G 0 24G 0% /dev/shm /dev/sda1 477M 123M 329M 28% /boot 13:33:34 up 1 day, 18:30, 2 users, load average: 3.39, 2.53, 2.36 (it's an 8-core) Nothing particular in log/messages. The vm's are running normally and they are not showing the same behaviour. Can anybody give me a pointer? Thanks Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
+1 And remember that I/O is more than just disk. The atop monitor gives you information like top and htop, but also provides a lot of I/O information as well including network. Perhaps your server is the target of a network-based DDOS attack which can cause lots of I/O wait time. Also look at top to see what numbers are in the si and hi columns. THese stand for software and hardware interrupts. If one of those is high you can also narrow it down. Hope this helps. On 01/28/2015 07:51 AM, Nicolas Thierry-Mieg wrote: On 01/28/2015 01:32 PM, Jatin Davey wrote: Hi Users I am using RHEL 6.5 on my server. From top command i can see that the processors in my server are spending a lot of time on wait for I/O. I can see high percentage in terms of 30-50% on "wa" time. Here is the df output about the disk space in my system: ** [root@localhost images]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 1915071844 103227908 1714563936 6% / tmpfs32931472 0 32931472 0% /dev/shm ** Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. you could use iotop or vmstat to see what processes are causing the IO. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- * David P. Both, RHCE Millennium Technology Consulting LLC Raleigh, NC, USA 919-389-8678 db...@millennium-technology.com www.millennium-technology.com www.databook.bz - Home of the DataBook for Linux DataBook is a Registered Trademark of David Both * This communication may be unlawfully collected and stored by the National Security Agency (NSA) in secret. The parties to this email do not consent to the retrieving or storing of this communication and any related metadata, as well as printing, copying, re-transmitting, disseminating, or otherwise using it. If you believe you have received this communication in error, please delete it immediately. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CVE-2015-0235 - glibc gethostbyname
Hi, For reasons which are too tiresome to bore you all with, I have an obligation to look after a suite of legacy CentOS 4.x systems which cannot be migrated upwards. I note on https://access.redhat.com/articles/1332213 the following comment from a RHN person: We are currently working on and testing errata for RHEL 4, we will post an update for it as soon as it's ready. Thank you for your patience! Is there *any* prospect of updated glibc packages for CentOS 4.x being made available? Cheers S. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
On 01/28/2015 03:32 PM, Jatin Davey wrote: Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. Fisrt of all, you should ensure how fast are your disks. There are several methods to check that: https://www.thomas-krenn.com/en/wiki/Linux_I/O_Performance_Tests_using_dd But there are several aother way to achieve measurement. If you notice some poor performance, then you can assume your disks are slow. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS - Firefox and Flash
On 23.01.2015. 14:52, James B. Byrne wrote: > On Thu, January 22, 2015 12:27, Frank Cox wrote: >> On Thu, Jan 22, 2015 at 09:36:24AM -0500, James B. Byrne wrote: >>> If one has already done all that and, following the most recent FF > update, all that is displayed is a video window with the Flash >>> logo/Button in the middle. And regardless of how many times one > clicks on said button no video will show or sound will emit, what > then? >> What firefox plugins do you have installed that might be blocking > flash? >> I personally don't use flash stuff much, but I have noscript > installed >> and it makes me either allow javascript or click on the embedded > flash >> content to view it. But so far it always seems to work when I > either >> allow >> javascript on the site or click on the content. > > I thought that was the case too. However, disabling NoScript for > YouTube does not change the observed behaviour. It is decidedly odd > in that the Flash video will not play until one sets the enable html5 > option in YouTube. > > One of the artifacts of switching the html5 on in YT is that upon > returning to the video page the video canvas shows an error message, > with the 'Try again later' tag. But simply clicking on the video > frame a second time starts the video. > > I am not sure what is going on. I have discovered that the same > approach (switching on html5 in YouTube) has solved this issue for a > least one of the impacted users. I will try it on others as the > occasion permits. > > It seems to me likely to be a FF issue at its core. > > I solved that for Firefox 35.x. I added some symlinks to $HOME/.mozilla/plugins Here is the list of symlinks: [drlove@kanc ~]$ cd $HOME/.mozilla/plugins [drlove@kanc plugins]$ readlink -f * /usr/lib64/flash-plugin/libflashplayer.so /usr/lib64/mozilla/plugins/libgnome-shell-browser-plugin.so /usr/lib64/IcedTeaPlugin.so /usr/lib64/mozilla/plugins/librhythmbox-itms-detection-plugin.so /usr/lib64/mozilla/plugins/libtotem-cone-plugin.so /usr/lib64/mozilla/plugins/libtotem-gmp-plugin.so /usr/lib64/mozilla/plugins/libtotem-mully-plugin.so /usr/lib64/mozilla/plugins/libtotem-narrowspace-plugin.so I have not made java work though, but I have 31.x for that if necessary -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe StarOS, Mikrotik and CentOS/RHEL/Linux consultant ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
On 28-01-2015 11:15, Patrick Bervoets wrote: I have a C6 server acting as a kvm-host. When connecting with ssh the console is extremely slow and hangs for minutes at a time. Connecting to this server is not the problem. If I use: ssh root@host "whatever" I got immediate response even when interactive consoles opened with ssh are hanging. Sorry, is it hanging during the session or while attempting to establish a new one? If this last, it may be dns and ssh -v may help. The former is weird, I don't think I ever saw it. Marcelo ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
Op 28-01-15 om 17:20 schreef Marcelo Ricardo Leitner: On 28-01-2015 11:15, Patrick Bervoets wrote: I have a C6 server acting as a kvm-host. When connecting with ssh the console is extremely slow and hangs for minutes at a time. Connecting to this server is not the problem. If I use: ssh root@host "whatever" I got immediate response even when interactive consoles opened with ssh are hanging. Sorry, is it hanging during the session or while attempting to establish a new one? If this last, it may be dns and ssh -v may help. The former is weird, I don't think I ever saw it. Marcelo Marcelo, It hangs during the session. Once I'm logged in and beginning to type it displays 3-5 chars and then hangs for up to 15 minutes, a few more chars, wait, and so on. Checked my resolv.conf; added 'options single-request-reopen' though I don't know if that is helping. Yes it is weird; even more that individual commands sent with ssh gives immediate respons. Thanks Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
Hi Patrick have you ever tried to find out on which side the hanger is: on the client's or on the server's, using tcpumg or the like? That migth help a bit further on, that might. suomi On 01/28/2015 05:41 PM, Patrick Bervoets wrote: Op 28-01-15 om 17:20 schreef Marcelo Ricardo Leitner: On 28-01-2015 11:15, Patrick Bervoets wrote: I have a C6 server acting as a kvm-host. When connecting with ssh the console is extremely slow and hangs for minutes at a time. Connecting to this server is not the problem. If I use: ssh root@host "whatever" I got immediate response even when interactive consoles opened with ssh are hanging. Sorry, is it hanging during the session or while attempting to establish a new one? If this last, it may be dns and ssh -v may help. The former is weird, I don't think I ever saw it. Marcelo Marcelo, It hangs during the session. Once I'm logged in and beginning to type it displays 3-5 chars and then hangs for up to 15 minutes, a few more chars, wait, and so on. Checked my resolv.conf; added 'options single-request-reopen' though I don't know if that is helping. Yes it is weird; even more that individual commands sent with ssh gives immediate respons. Thanks Patrick ___ 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] C6 server responding extremely slow on ssh interactive
Op 28-01-15 om 17:51 schreef anax: Hi Patrick have you ever tried to find out on which side the hanger is: on the client's or on the server's, using tcpumg or the like? That migth help a bit further on, that might. suomi Not yet, I'll try that out tomorrow Thanks Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] "Monitor" RPMs in Repo
On Wed, Jan 28, 2015 at 07:16:34AM +0100, Markus "Shorty" Uckelmann wrote: > - Know when a RPM which is currently in only one repository pops up in a > different repository. E.g. RPM going from epel-testing to epel. > > - Get notified when a RPM pops up in a repository. E.g. waiting for an > RPM to appear. I use 'mrepo' [1] to sync EPEL (and other repos) to a local mirror so systems not publicly routed can get packages. It generates an email of repo changes every time it runs, so I know what is added and removed. I also subscribe to the epel-package-announce list [2] so I can see all the EPEL updates even before they hit the mirrors. 1. http://dag.wiee.rs/home-made/mrepo/ 2. https://admin.fedoraproject.org/mailman/listinfo/epel-package-announce -- Jonathan Billings ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
On 1/28/2015 4:32 AM, Jatin Davey wrote: I am using RHEL 6.5 on my server. From top command i can see that the processors in my server are spending a lot of time on wait for I/O. I can see high percentage in terms of 30-50% on "wa" time. Here is the df output about the disk space in my system: ** [root@localhost images]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 1915071844 103227908 1714563936 6% / tmpfs32931472 0 32931472 0% /dev/shm ** Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. it appears you have everything on a single file system on a single 2TB drive?I'm going to guess thats a desktop grade SATA disk spinning at most at 7200rpm (many are slower, 'green' disks are often 5400rpm). what sort of workload are you running?our high disk IO servers, doing things like transactional databases, have many 1rpm or 15000 rpm drives on a SAS2 raid card with 1GB or 2GB of write-back-cache (battery or flash backed). -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
On 1/28/2015 9:37 AM, John R Pierce wrote: On 1/28/2015 4:32 AM, Jatin Davey wrote: Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. ... oops, left off the last part.To improve disk IO performance, use more/faster disks, or do less disk IO. Since you've given us no clues about your hardware configuration OR software workload, its hard to be more specific. -- john r pierce 37N 122W somewhere on the middle of the left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
On 01/28/2015 05:15 AM, Patrick Bervoets wrote: When connecting with ssh the console is extremely slow and hangs for minutes at a time Check for IP address conflicts in the server's network. For IPv4: # arping -D -I ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
Op 28-01-15 om 20:17 schreef Gordon Messmer: On 01/28/2015 05:15 AM, Patrick Bervoets wrote: When connecting with ssh the console is extremely slow and hangs for minutes at a time Check for IP address conflicts in the server's network. For IPv4: # arping -D -I ARPING 192.168.1.15 from 0.0.0.0 br0 Unicast reply from 192.168.1.15 [AC:16:2D:72:67:D4] 0.723ms Sent 1 probes (1 broadcast(s)) Received 1 response(s) Thanks anyway Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Intel Displayport on Centos 7
Since my current monitor appears to be slowly dying, I'm looking for a replacement. I generally use hardware replacement as an excuse to get something bigger/better/faster than what I had before, so I'm currently considering something like a BenQ GW2765HT. The manual for my Intel motherboard has this to say about DisplayPort on the built-in graphics controller: QUOTE: DisplayPort’s maximum supported display resolution is 2560 x 1600 at a 60 Hz refresh rate with a 16:10 aspect ratio (WQXGA). END OF QUOTE It also states that the maximum supported resolution on the built-in DVI-I port is 1920x1200, which is the resolution of the monitor that I have right now; the one that appears to be dying. Therefore, this new monitor wouldn't work at full resolution with that output. Having never used DisplayPort before, I'm wondering if this means that if I purchase the BenQ monitor above, or something similar, I can then reasonably expect to plug it in and have it just-work with my Centos 7 setup. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
On 01/28/2015 12:12 PM, Patrick Bervoets wrote: ARPING 192.168.1.15 from 0.0.0.0 br0 Unicast reply from 192.168.1.15 [AC:16:2D:72:67:D4] 0.723ms Sent 1 probes (1 broadcast(s)) Received 1 response(s) Thanks anyway I'm not sure what you mean by "thanks anyway". You got a response. There's an IPv4 conflict on your network. That's why you're seeing those delays. If there's no conflict, you should see 0 responses. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CVE-2015-0235 - glibc gethostbyname
- Original Message - > From: "Simon Banton" > To: "CentOS mailing list" > Sent: Wednesday, January 28, 2015 6:10:34 AM > Subject: Re: [CentOS] CVE-2015-0235 - glibc gethostbyname > > Hi, > > For reasons which are too tiresome to bore you all with, I have an > obligation to look after a suite of legacy CentOS 4.x systems which > cannot be migrated upwards. > > I note on https://access.redhat.com/articles/1332213 the following > comment from a RHN person: > > >We are currently working on and testing errata for RHEL 4, we will > >post an update for it as soon as it's ready. Thank you for your > >patience! > > Is there *any* prospect of updated glibc packages for CentOS 4.x > being made available? > > Cheers > S. Although I hate Oracle with a fury, one good thing is that they put all the updates they rebuild for their RHEL clone in a publicly viewable site. I'm guessing they pay Redhat for extended support on end of life RHEL4 to get access to the source rpms. I learned about this from another list member back when the bash shell shock exploit hit. http://public-yum.oracle.com/repo/EnterpriseLinux/EL4/latest/ David Miller. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Very slow disk I/O
On 01/28/2015 04:32 AM, Jatin Davey wrote: Could someone point me on how to improve the disk I/O on my server and reduce the wait time on I/O. Start by identifying your disk and controller. Assuming that this is a single SATA disk: # smartctl -a /dev/sda | egrep 'Model:|Rate:|SATA Version' # lspci | grep SATA Next install and run iotop. If there's something on your system that's particularly active and unnecessary, disable it. If everything contending for your disk *is* necessary, then you may need to take steps to improve disk performance. There are a number of possibilities. 1: Use an SSD instead of a disk. 2: Use an SSD in addition to a disk. If a purely SSD storage system is too expensive, you might choose to use an SSD for one or more filesytems that you can mount where the high volume IO is occurring, and continue to use the disk for filesystems that need more data capacity and fewer IOPS. 3: Use a fast RAID array. A RAID1 array can provide better read performance than a single disk. For higher write volumes, use RAID10 on four or more disks. Avoid RAID 5 or 6, as they'll be slower than a single disk. 4: Replace poorly supported hardware. It might be that your SATA controller isn't well supported, and performs badly as a result. I used to have a desktop system with NVidia motherboard chipset. Its SATA controller was garbage. Performance with the same disk was noticeably better with a cheap PCI-E SATA controller. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CVE-2015-0235 - glibc gethostbyname
On Wed, January 28, 2015 5:09 pm, David C. Miller wrote: > > > - Original Message - >> From: "Simon Banton" >> To: "CentOS mailing list" >> Sent: Wednesday, January 28, 2015 6:10:34 AM >> Subject: Re: [CentOS] CVE-2015-0235 - glibc gethostbyname >> >> Hi, >> >> For reasons which are too tiresome to bore you all with, I have an >> obligation to look after a suite of legacy CentOS 4.x systems which >> cannot be migrated upwards. >> >> I note on https://access.redhat.com/articles/1332213 the following >> comment from a RHN person: >> >> >We are currently working on and testing errata for RHEL 4, we will >> >post an update for it as soon as it's ready. Thank you for your >> >patience! >> >> Is there *any* prospect of updated glibc packages for CentOS 4.x >> being made available? >> >> Cheers >> S. > > Although I hate Oracle with a fury, one good thing is that they put all > the updates they rebuild for their RHEL clone in a publicly viewable site. The just follow what is written in GPL license. And so does RedHat (and I respect RedHat for always meticulously obeying the requiremetns of GPL - at least that is my observation for about one a a half decades) Valeri > I'm guessing they pay Redhat for extended support on end of life RHEL4 to > get access to the source rpms. I learned about this from another list > member back when the bash shell shock exploit hit. > > http://public-yum.oracle.com/repo/EnterpriseLinux/EL4/latest/ > > David Miller. > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?
On 01/23/2015 01:44 AM, Götz Reinicke - IT Koordinator wrote: I do have two centos 6.6 servers. With a "performance optimized" rsync I get an speed of 15 - 20 MB/s That *is* pretty slow for sustained writes. Does the same rate hold true for individual large files as it does for lots of small ones? What filesystem are you using on each side? rsync -aHAXxv --numeric-ids --progress -e "ssh -T -c arcfour -o Compression=no -x" It's worth noting that -X and -A are going to perform filesystem IO that you don't see on SMB, because it isn't going to preserve/set ACLs and extended attributes (IIRC). So, one possibility is that you're seeing a difference in rate because you're doing lots of small files and filesystem operations are relatively slow. You might drop those two options and see how that affects the rate. If you determine that those are the cause of the performance difference, you can turn them back on, understanding that there's a cost associated with preserving that data. Both servers have plenty of memory and cpu usage looks low. Define low. If you're using top and press '1' to expand the CPU lines, you'll probably see one cpu with higher "us" percentage, which is SSH encrypting the data. What percentage is that? Is there a large value in "sy" or "hi" on any CPU? Probably not since you see good rates using 'dd' and smb copies, but I've seen systems where interrupt processing was a major bottleneck, so I make it a standard check. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] network copy performance is poor (rsync) - debugging suggestions?
On Wed, Jan 28, 2015 at 03:39:50PM -0800, Gordon Messmer wrote: > On 01/23/2015 01:44 AM, Götz Reinicke - IT Koordinator wrote: > >I do have two centos 6.6 servers. With a "performance optimized" rsync I > >get an speed of 15 - 20 MB/s Add this parameter: --bwlimit=0 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
Op 29-01-15 om 00:00 schreef Gordon Messmer: On 01/28/2015 12:12 PM, Patrick Bervoets wrote: ARPING 192.168.1.15 from 0.0.0.0 br0 Unicast reply from 192.168.1.15 [AC:16:2D:72:67:D4] 0.723ms Sent 1 probes (1 broadcast(s)) Received 1 response(s) Thanks anyway I'm not sure what you mean by "thanks anyway". You got a response. There's an IPv4 conflict on your network. That's why you're seeing those delays. If there's no conflict, you should see 0 responses. Gordon, I'm sorry, I misunderstood you (and arping -D) This was the result of arping on another host; I thought I should see 2 responses in case of an ip conflict. Arping on the troublesome server gives 0 responses. I just tried with a physical console on that server and there I got the same unresponsive behaviour. Does this rule out network related problems? Mark (m.roth) suggested the vms eating up the video bus. (2 vms with an Oracle database) But I'm not sure how I could test that. Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C6 server responding extremely slow on ssh interactive
Op 28-01-15 om 17:51 schreef anax: Hi Patrick have you ever tried to find out on which side the hanger is: on the client's or on the server's, using tcpumg or the like? That migth help a bit further on, that might. suomi I'm not sure what you mean with tcpumg. But after testing with a physical console I'm experiencing the same problem. So I guess its the server. Thanks ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
