Re: [CentOS] Tomcat Monitoring
Sean Carolan wrote: > What do you use for monitoring your Apache Tomcat servers? I have > used jconsole to manually connect and look at the statistics. I'm > wondering if there are any standard tools for watching the health of > the java process. Hi, I'm interesting too in tomcat monitoring. Some times i have a problems with java, for example i get java.lang.OutOfMemoryError some idea is monitor catalina.out log for such errors, but may be there are a standard tools for java monitoring\restarting. -- Best Wishes, PAIX-UANIC | SK3929-RIPE ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
Hi You will probably get better answers by asking on the tomcat users list. See tomcat.apache.org. Tomcat publishes its health statistics using jmx and if your developers were thorough it is likely that application statistics would also be available in jmx. There is a number of expensive and not so expensive commercial tools to setup monitoring for jmx. Tivoli and AppManager comes to mind. I believe there might be support for jmx monitoring in cacti so that would be worth googling. Other than that a good test would be to monitor output of a wget request to your tomcat server which gives a good indiction of the health of your application server. Also have a look at http://www.lambdaprobe.org/d/index.htm which is a tool to monitor multiple tomcats with. Regards > -Original Message- > From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On > Behalf Of Sergej kandyla > Sent: 20 January 2009 11:06 > To: CentOS mailing list > Subject: Re: [CentOS] Tomcat Monitoring > > Sean Carolan wrote: > > What do you use for monitoring your Apache Tomcat servers? I have > > used jconsole to manually connect and look at the statistics. I'm > > wondering if there are any standard tools for watching the health of > > the java process. > > Hi, I'm interesting too in tomcat monitoring. > Some times i have a problems with java, for example i get > java.lang.OutOfMemoryError > > some idea is monitor catalina.out log for such errors, but may be there > are a standard tools for java monitoring\restarting. > __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Udev Rules for mounting usb disks
Hi,
Sys: C5.2, X86_64
my plan is to automatically mount five same brand usb disks in five
different directories.
I have written the following udev rule;
Problem is, it does not mount them on boot, only when I plug them in.
KERNEL=="sd*", SYSFS{serial}=="57442D574341554830303133323337",
SYSFS{product}=="My Book", SYMLINK+="usbdisc0", ACTION=="add",
RUN+="/bin/mount -o noatime /dev/usbdisc0 /mnt/woche1"
KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831303534",
SYSFS{product}=="My Book", SYMLINK+="usbdisc1", ACTION=="add",
RUN+="/bin/mount -o noatime /dev/usbdisc1 /mnt/woche2"
KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831343136",
SYSFS{product}=="My Book", SYMLINK+="usbdisc2", ACTION=="add",
RUN+="/bin/mount -o noatime /dev/usbdisc2 /mnt/woche3"
KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831303930",
SYSFS{product}=="My Book", SYMLINK+="usbdisc3", ACTION=="add",
RUN+="/bin/mount -o noatime /dev/usbdisc3 /mnt/woche4"
KERNEL=="sd*", SYSFS{serial}=="57442D574341554B30303239303435",
SYSFS{product}=="My Book", SYMLINK+="usbdisc4", ACTION=="add",
RUN+="/bin/mount -o noatime /dev/usbdisc4 /mnt/woche5"
How can I make them mount on boot?
Thx
Rainer
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
gerhardus.geldenh...@gta-travel.com wrote: > Hi > You will probably get better answers by asking on the tomcat users list. > See tomcat.apache.org. > > Tomcat publishes its health statistics using jmx and if your developers > were thorough it is likely that application statistics would also be > available in jmx. There is a number of expensive and not so expensive > commercial tools to setup monitoring for jmx. Tivoli and AppManager > comes to mind. I believe there might be support for jmx monitoring in > cacti so that would be worth googling. Other than that a good test would > be to monitor output of a wget request to your tomcat server which gives > a good indiction of the health of your application server. > > Also have a look at http://www.lambdaprobe.org/d/index.htm which is a > tool to monitor multiple tomcats with. OpenNMS can monitor jmx values (as well as snmp and doing icmp and httpd probes, etc.). http://www.opennms.org. --- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
On Mon, Jan 19, 2009 at 10:27 PM, Sean Carolan wrote: > What do you use for monitoring your Apache Tomcat servers? I have used > jconsole to manually connect and look at the statistics. I'm wondering if > there are any standard tools for watching the health of the java process. > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos You can use snmp and cacti to monitor some of the tomcat information. You simply need to add a few configuration modifications. See http://java.sun.com/j2se/1.5.0/docs/guide/management/SNMP.html -- During times of universal deceit, telling the truth becomes a revolutionary act. George Orwell ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
> -Original Message- > From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On > Behalf Of Jim Perrin > Sent: 20 January 2009 13:50 > To: CentOS mailing list > Subject: Re: [CentOS] Tomcat Monitoring > > On Mon, Jan 19, 2009 at 10:27 PM, Sean Carolan > wrote: > > What do you use for monitoring your Apache Tomcat servers? I have > used > > jconsole to manually connect and look at the statistics. I'm > wondering if > > there are any standard tools for watching the health of the java > process. > > ___ > > CentOS mailing list > > CentOS@centos.org > > http://lists.centos.org/mailman/listinfo/centos > > > You can use snmp and cacti to monitor some of the tomcat information. > You simply need to add a few configuration modifications. > > See http://java.sun.com/j2se/1.5.0/docs/guide/management/SNMP.html > some more usefull links: http://www.snmp4j.org http://java.sun.com/j2se/1.5.0/docs/guide/management/SNMP.html http://blogs.sun.com/jmxetc/entry/simple_is_not_easy https://opendmk.dev.java.net/ http://java.sun.com/products/jdmk/index.jsp http://www.agentpp.com/agen/agen.html http://java.sun.com/j2se/1.5.0/docs/api/java/lang/management/package-sum mary.html http://docs.sun.com/app/docs/doc/816-7609/6mdjrf88g?a=view Regards __ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email __ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Udev Rules for mounting usb disks
Rainer Traut wrote:
> Hi,
>
> Sys: C5.2, X86_64
>
> my plan is to automatically mount five same brand usb disks in five
> different directories.
>
> I have written the following udev rule;
> Problem is, it does not mount them on boot, only when I plug them in.
>
> KERNEL=="sd*", SYSFS{serial}=="57442D574341554830303133323337",
> SYSFS{product}=="My Book", SYMLINK+="usbdisc0", ACTION=="add",
> RUN+="/bin/mount -o noatime /dev/usbdisc0 /mnt/woche1"
> KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831303534",
> SYSFS{product}=="My Book", SYMLINK+="usbdisc1", ACTION=="add",
> RUN+="/bin/mount -o noatime /dev/usbdisc1 /mnt/woche2"
> KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831343136",
> SYSFS{product}=="My Book", SYMLINK+="usbdisc2", ACTION=="add",
> RUN+="/bin/mount -o noatime /dev/usbdisc2 /mnt/woche3"
> KERNEL=="sd*", SYSFS{serial}=="57442D574341554631383831303930",
> SYSFS{product}=="My Book", SYMLINK+="usbdisc3", ACTION=="add",
> RUN+="/bin/mount -o noatime /dev/usbdisc3 /mnt/woche4"
> KERNEL=="sd*", SYSFS{serial}=="57442D574341554B30303239303435",
> SYSFS{product}=="My Book", SYMLINK+="usbdisc4", ACTION=="add",
> RUN+="/bin/mount -o noatime /dev/usbdisc4 /mnt/woche5"
>
> How can I make them mount on boot?
>
> Thx
> Rainer
>
> ___
> CentOS mailing list
> CentOS@centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
how do you expect to mount usb disks when they are not plugged in ? plug
them in and reboot.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
[CentOS] default stty profile settings in CentOS
Hi folks [Please CC me, I am not on the list] I am here at a customer who have this in profile (.cshrc): stty erase "^H" kill "^?" intr "^C" Backspace clears the hole command line. How is the CentOS default? kind regards Sven ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Udev Rules for mounting usb disks
> From: partha chowdhury > > my plan is to automatically mount five same brand usb disks in five > > different directories. > > I have written the following udev rule; > > Problem is, it does not mount them on boot, only when I plug them in. > > how do you expect to mount usb disks when they are not plugged in ? plug > them in and reboot. He did not say he tried to boot with the drives not plugged; he said he needs the plugging action in order to get the drives mounted... If he boots with the drives already plugged in, they apparently do not get mounted... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] default stty profile settings in CentOS
> From: Sven > I am here at a customer who have this in profile (.cshrc): > stty erase "^H" kill "^?" intr "^C" > Backspace clears the hole command line. How is the CentOS default? >From the man page: erase CHAR, will erase the last character typed intr CHAR, will send an interrupt signal kill CHAR, will erase the current line So you might want to replace 'kill' with 'erase'... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Udev Rules for mounting usb disks
Am 20.01.2009 15:33, schrieb John Doe: >> From: partha chowdhury >>> my plan is to automatically mount five same brand usb disks in five >>> different directories. >>> I have written the following udev rule; >>> Problem is, it does not mount them on boot, only when I plug them in. >> how do you expect to mount usb disks when they are not plugged in ? plug >> them in and reboot. > > He did not say he tried to boot with the drives not plugged; he said he needs > the plugging action in order to get the drives mounted... > If he boots with the drives already plugged in, they apparently do not get > mounted... Yes exactly. My problem description might have been ambiguous but common sense should have made this clear. Rainer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Udev Rules for mounting usb disks
> From: Rainer Traut > Am 20.01.2009 15:33, schrieb John Doe: > >> From: partha chowdhury > >>> my plan is to automatically mount five same brand usb disks in five > >>> different directories. > >>> I have written the following udev rule; > >>> Problem is, it does not mount them on boot, only when I plug them in. > >> how do you expect to mount usb disks when they are not plugged in ? plug > >> them in and reboot. > > > > He did not say he tried to boot with the drives not plugged; he said he > > needs > the plugging action in order to get the drives mounted... > > If he boots with the drives already plugged in, they apparently do not get > mounted... > > Yes exactly. My problem description might have been ambiguous but common > sense should have made this clear. Did you try with simpler (no serial/model) rules? Maybe, at boot time, there is a problem getting the disks serials/models... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Generating password string in /var/nis/passwd with Perl
Hello, in our network we have AD (Win 2003) for user authentication under Windows and NIS (CentOS 5.2) for same under Linux: # rpm -qf /var/yp filesystem-2.4.0-1.el5.centos ypbind-1.19-8.el5 yp-tools-2.9-0.1 ypserv-2.19-3 I have written a CGI Script to add new users both to AD and NIS and also to create the home dirs at our NetApp-Filer. Unfortunately some steps still have to be made by hand (the sysadmin copy-pastes it from a browser to a shell). I could skip one manual step (calling yppasswd) if I knew how to generate the passwd string for /var/nis/passwd: farber:oav3dV4.Mnj/.:10154153:5725:Alexander Farber,jn-05/02:/home/farber:/bin/bash Has anybody already figured out, how to do it from Perl? I'm sure there must be some way (smth. with Perl's crypt). Regards Alex PS: Here is my script: http://pastebin.com/m46057a70 feel free to modify and use ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Generating password string in /var/nis/passwd with Perl
On Tue, Jan 20, 2009 at 05:11:27PM +0100, Alexander Farber wrote:
> I could skip one manual step (calling yppasswd) if I knew
> how to generate the passwd string for /var/nis/passwd:
>
> farber:oav3dV4.Mnj/.:10154153:5725:Alexander
> Has anybody already figured out, how to do it from Perl?
crypt is the function to call.
eg
print crypt("hello","ab")
abl0JrMf6tlhw
The "ab" is the salt and should be chose from [a-zA-Z0-9./]
"man 3 crypt" for the C version, which the perl version mimics
--
rgds
Stephen
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-announce Digest, Vol 47, Issue 8
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. CESA-2009:0057 Important CentOS 3 i386squirrelmail - security update (Tru Huynh) 2. CESA-2009:0057 Important CentOS 3 x86_64 squirrelmail - security update (Tru Huynh) -- Message: 1 Date: Mon, 19 Jan 2009 23:38:06 +0100 From: Tru Huynh Subject: [CentOS-announce] CESA-2009:0057 Important CentOS 3 i386 squirrelmail - security update To: centos-annou...@centos.org Message-ID: <20090119223806.ga19...@sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2009:0057 squirrelmail security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2009-0057.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/squirrelmail-1.4.8-9.el3.centos.1.noarch.rpm source: updates/SRPMS/squirrelmail-1.4.8-9.el3.centos.1.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update squirrelmail Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B -- next part -- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://lists.centos.org/pipermail/centos-announce/attachments/20090119/fa8043f0/attachment-0001.bin -- Message: 2 Date: Mon, 19 Jan 2009 23:38:33 +0100 From: Tru Huynh Subject: [CentOS-announce] CESA-2009:0057 Important CentOS 3 x86_64 squirrelmail - security update To: centos-annou...@centos.org Message-ID: <20090119223833.gb19...@sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2009:0057 squirrelmail security update for CentOS 3 x86_64: https://rhn.redhat.com/errata/RHSA-2009-0057.html The following updated file has been uploaded and is currently syncing to the mirrors: x86_64: updates/x86_64/RPMS/squirrelmail-1.4.8-9.el3.centos.1.noarch.rpm source: updates/SRPMS/squirrelmail-1.4.8-9.el3.centos.1.src.rpm You may update your CentOS-3 x86_64 installations by running the command: yum update squirrelmail Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B -- next part -- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://lists.centos.org/pipermail/centos-announce/attachments/20090119/9310a301/attachment-0001.bin -- ___ CentOS-announce mailing list centos-annou...@centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 47, Issue 8 ** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Apache Server Tuning for Performance
Hi all, I am facing facing performance issues with our web servers which is working for concurrent 250 requests properly and then stops responding when the requests are more than 250 . The current configuration parameters are as follows : apachectl -version Server version: Apache/2.0.52 Server built: Jan 30 2007 09:56:16 Kernel : 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux Server Hardware : MAIN MEMORY (i) Memory Size 4 GB Dual-Core Intel 5160 processors. httpd.conf Timeout 300 KeepAlive On MaxKeepAliveRequests 1000 KeepAliveTimeout 150 ## Server-Pool Size Regulation (MPM specific) # prefork MPM # StartServers: number of server processes to start # MinSpareServers: minimum number of server processes which are kept spare # MaxSpareServers: maximum number of server processes which are kept spare # ServerLimit: maximum value for MaxClients for the lifetime of the server # MaxClients: maximum number of server processes allowed to start # MaxRequestsPerChild: maximum number of requests a server process serves StartServers 8 MinSpareServers5 MaxSpareServers 20 ServerLimit 251 MaxClients 251 MaxRequestsPerChild 4000 # worker MPM # StartServers: initial number of server processes to start # MaxClients: maximum number of simultaneous client connections # MinSpareThreads: minimum number of worker threads which are kept spare # MaxSpareThreads: maximum number of worker threads which are kept spare # ThreadsPerChild: constant number of worker threads in each server process # MaxRequestsPerChild: maximum number of requests a server process serves StartServers 2 MaxClients150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 I want to know about the difference between worker MPM and Prefork MPM , how to find out which one will be used by my apache server and the recommended one for highly loaded server.If some one provide me the link that best explains above two comparison also be very use full. Can any one guide me tuning to be done for the maximum utilization of the Resources and better performance of the Servers. Regards, lingu ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
Am 20.01.2009 um 19:39 schrieb linux-crazy: > Hi all, > > I am facing facing performance issues with our web servers which is > working for concurrent 250 requests properly and then stops > responding when the requests are more than 250 . > > The current configuration parameters are as follows : Only use prefork MPM (worker is for Win32, AFAIK). If you set ServerLimit to 251, that's the limit. Set ServerLimit and MaxClients to the same value. (Larger than 250) OK? And take a couple of minutes to study the apache documentation. It's actually quite good and tranlated into many languages... BUT: what your server is being able to handle also depends on what you actually serve (PHP/JSP/Servelets/Perl/whatever! This is usually not a problem that is easily described and solved in two sentences. Rainer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
linux-crazy wrote: > Hi all, > > I am facing facing performance issues with our web servers which is > working for concurrent 250 requests properly and then stops > responding when the requests are more than 250 . Increase your MaxClients configuration, also enable if you haven't already the server-status module and monitor the server via http:///server-status it will show how many workers are busy and what they are doing. As for which to use, prefork is the old forked method of doing things, the other uses threads. Depending on what kind of application your running on top of apache, if it is not thread safe(at some point many PHP modules were not thread safe), you may want to use prefork. Otherwise you can use the threading model. If your not sure I'd say stick to prefork to be safe until you can determine for sure that threading is safe. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
linux-crazy wrote: > I want to know about the difference between worker MPM and > Prefork MPM , how to find out which one will be used by my apache > server and the recommended one for highly loaded server.If some one > provide me the link that best explains above two comparison also be > very use full. > > > Can any one guide me tuning to be done for the maximum utilization > of the Resources and better performance of the Servers. > Most list members would likely advise sticking with the prefork configuration. Without knowing what kind of applications you are running on your webserver, I wouldn't suggest changing it. Merely increasing the number of workers might make performance worse. Use ps or top to figure out how much each apache worker is using. Then decide how much ram you want to dedicate on your server to Apache, without going into swap. (Over-allocating and then paging out memory will only make performance much worse.) For example, if I have 2G or ram, and I want 1.5 for apache workers, my average apache worker size (resident memory) is 65MB, then I have room for 23 workers. (1024 * 1.5 ) / 65. (There are more accurate ways to calculate this usage, like taking shared memory into account.) Upgrading the ram in your web server is a pretty fast interim solution. Consider your application performance, too. The longer a request in your application takes, the more workers are in use on your web server, taking up more memory. If you have long-running queries in your database, take care of those first. Good luck Jed ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
Jed Reynolds wrote: > > Merely increasing the number of workers might make performance worse. > > Use ps or top to figure out how much each apache worker is using. Then > decide how much ram you want to dedicate on your server to Apache, > without going into swap. (Over-allocating and then paging out memory > will only make performance much worse.) For example, if I have 2G or > ram, and I want 1.5 for apache workers, my average apache worker size > (resident memory) is 65MB, then I have room for 23 workers. (1024 * 1.5 > ) / 65. (There are more accurate ways to calculate this usage, like > taking shared memory into account.) Pay attention to shared memory when doing this. A freshly-forked process shares virtually all RAM with its parent. How much and how quickly this changes varies wildly with the application type and activity that causes the child's data to become unique. With some types of applications (especially mod_perl) you may want to tune down the number of hits each child services to increase memory sharing. Also, if you are running external cgi programs you must take them into account. > Upgrading the ram in your web server is a pretty fast interim solution. > > Consider your application performance, too. The longer a request in your > application takes, the more workers are in use on your web server, > taking up more memory. If you have long-running queries in your > database, take care of those first. You may also have to turn off or tune down the HTTP 1.1 connection keepalives, trading the time it takes to establish a new connection for the RAM it takes to keep the associated process waiting for another request from the same client. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
> > You can use snmp and cacti to monitor some of the tomcat information. > > You simply need to add a few configuration modifications. > > > > See http://java.sun.com/j2se/1.5.0/docs/guide/management/SNMP.html\ Thank you all for the replies. We already use Nagios so I'm hoping for a nagios-friendly solution. Unfortunately the check_jmx plugin listed on the Nagios exchange doesn't seem to work properly, being unable to monitor Heap Memory Usage over 2Gb. Does anyone else have a dependable nagios plugin for keeping tabs on Nagios? If not we will write our own. thanks Sean ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] RHEL 5.3 released
Hello list! http://www.redhat.com/about/news/prarchive/2009/rhel_5_3.html kernel (2.6.18-128.el5) changelog: http://rhn.redhat.com/errata/RHSA-2009-0225.html -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
On Tue, Jan 20, 2009 at 11:40:14PM +0200, Pasi Kärkkäinen wrote: > Hello list! > > http://www.redhat.com/about/news/prarchive/2009/rhel_5_3.html > > kernel (2.6.18-128.el5) changelog: > http://rhn.redhat.com/errata/RHSA-2009-0225.html > "Red Hat Enterprise Linux 5.3 GA Announcement": https://www.redhat.com/archives/rhelv5-list/2009-January/msg00092.html -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
on 1-20-2009 1:40 PM Pasi � spake the following: > Hello list! > > http://www.redhat.com/about/news/prarchive/2009/rhel_5_3.html > > kernel (2.6.18-128.el5) changelog: > http://rhn.redhat.com/errata/RHSA-2009-0225.html > > -- Pasi I hope this doesn't start a "When is CentOS 5.3 going to be out?" whine thread! ;-P -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tomcat Monitoring
Sean Carolan wrote: >> > You can use snmp and cacti to monitor some of the tomcat information. >> > You simply need to add a few configuration modifications. >> > >> > See http://java.sun.com/j2se/1.5.0/docs/guide/management/SNMP.html\ > > Thank you all for the replies. We already use Nagios so I'm hoping > for a nagios-friendly solution. Unfortunately the check_jmx plugin > listed on the Nagios exchange doesn't seem to work properly, being > unable to monitor Heap Memory Usage over 2Gb. Monitoring heap is somewhat black magic in my experience, filled with false alarms. You can use this jsp to poll the heap if you want: <% Runtime runtime = Runtime.getRuntime(); %> <%=runtime.freeMemory()%> memory free of <%=runtime.totalMemory()%> total memory I don't monitor heap in nagios, only in cacti. At my last company I had simple crons to monitor when the JVMs spit out of memory errors and restarted them automatically. A couple companies ago I polled heap for weblogic and stored the values in RRDtool then wrote scripts to get the averages over a period of time to detect low heap levels and alert, took a lot of work to get right and even after all the work there was still some false alarms. > Does anyone else have a dependable nagios plugin for keeping tabs on > Nagios? If not we will write our own. Good luck..a big problem with some JMX client implementations is that they spin up a JVM each time they want a stat. Last time I talked to the people at Groundwork they said they had some sort of JMX tie-in, and their stuff is nagios based you may find something there. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
Scott Silva wrote: > "When is CentOS 5.3 going to be out?" All Together Now WHEN ITS READY! there. got that out of the way. we now return to your regularlly scheduled threads on wifi problems and usb automounters... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
On Tue, Jan 20, 2009 at 2:03 PM, Scott Silva wrote: > on 1-20-2009 1:40 PM Pasi � spake the following: >> Hello list! >> >> http://www.redhat.com/about/news/prarchive/2009/rhel_5_3.html >> >> kernel (2.6.18-128.el5) changelog: >> http://rhn.redhat.com/errata/RHSA-2009-0225.html >> >> -- Pasi > > I hope this doesn't start a "When is CentOS 5.3 going to be out?" whine > thread! ;-P We have a "trap" for those people who ask this inevitable question, and it worked quite well in the past. Please redirect them to: http://www.centos.org/modules/newbb/viewtopic.php?topic_id=18223&forum=37 Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS failover cluster
On 17/01/2009, at 9:46 AM, John R Pierce wrote: > Giuseppe Fuggiano wrote: >> What should I use to configure a failover cluster under CentOS? Is >> there Red Hat Cluster Suite or something like that? >> >> Thank you in advance. >> > > in general, 'heartbeat'. RHCS (Red Hat Cluster Service) is some > wrappers around heartbeat, and rather a finicky control panel for it > all. It's RedHat Cluster Suite, not Service, and it's not wrappers around heartbeat. In answer to Guiseppe's question, the RedHat Cluster Suite is available as part of CentOS and works great. Whether RHCS will help you or not, I cannot say due the fairly vague description of your requirements. http://www.centos.org/docs/5/html/5.2/Cluster_Suite_Overview/ http://www.centos.org/docs/5/html/5.2/Cluster_Administration/ Regards, Tom ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Compile Problem
I am trying to follow a solution that states "edit apache's libtool and change the following option to "yes": build_libtool_libs=no" which begs the question, how? :) Anyone care to show me the light? Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
>I am trying to follow a solution that states "edit apache's libtool and >change the following option to "yes": build_libtool_libs=no" which begs >the question, how? :) Anyone care to show me the light? Found it, /usr/lib/apr-1/build/libtool, but it was set to yes:/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] SquirrelMail Oddity SSL error
I have two users only under one virtual domain which after sending an email are returned to a screen which says: Secure Connection Failed An error occurred during a connection to replacedrealdomainnamehere.org:80. SSL received a record that exceeded the maximum permissible length. (Error code: ssl_error_rx_record_too_long) The page you are trying to view can not be shown because the authenticity of the received data could not be verified. * Please contact the web site owners to inform them of this problem. First, this seems to be happening only with two users under one domain on the server. SSL for SquirrelMail is not enabled. I can't find a thing unique to these two users which would cause this error. I can't find anything in the logs to help. Has anybody else seen anything like this and perhaps have a cure? John Hinton ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SquirrelMail Oddity SSL error
John Hinton wrote: > First, this seems to be happening only with two users under one domain > on the server. SSL for SquirrelMail is not enabled. I can't find a thing > unique to these two users which would cause this error. I can't find > anything in the logs to help. Is this a new installation of SM or an existing installation? Any plugins that may be causing this issue? I've been using SM for about 8 or 9 years now though all of my installations are 100% SSL(I handle SSL redirections etc in apache rather than in SM's config or plugins). I suggest testing it in firefox and using the live http headers plugin to see exactly where the browser is trying to go. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
On Wed, 21 Jan 2009 00:09:38 +0530 linux-crazy wrote: > Hi all, > > I am facing facing performance issues with our web servers which is > working for concurrent 250 requests properly and then stops > responding when the requests are more than 250 . > > ... > > Can any one guide me tuning to be done for the maximum utilization > of the Resources and better performance of the Servers. Also take a look at apache alternatives like lighttpd and nginx. In certain cases they do miracles. -- Jure Pečar http://jure.pecar.org/ http://f5j.eu ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
On Tue, Jan 20, 2009 at 2:03 PM, Scott Silva wrote: > on 1-20-2009 1:40 PM Pasi � spake the following: >> Hello list! >> >> http://www.redhat.com/about/news/prarchive/2009/rhel_5_3.html >> >> kernel (2.6.18-128.el5) changelog: >> http://rhn.redhat.com/errata/RHSA-2009-0225.html >> >> -- Pasi > > I hope this doesn't start a "When is CentOS 5.3 going to be out?" whine > thread! ;-P > Scott, Thanks for posting this - I misread (probably in great hope) that it _was_ CentOS 5.3. I'm glad to wait, but it's actually a kind of relief knowing that it's on the way. THANKS, GUYS! mhr ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SquirrelMail Oddity SSL error
nate wrote: > John Hinton wrote: > > >> First, this seems to be happening only with two users under one domain >> on the server. SSL for SquirrelMail is not enabled. I can't find a thing >> unique to these two users which would cause this error. I can't find >> anything in the logs to help. >> > > Is this a new installation of SM or an existing installation? Any > plugins that may be causing this issue? I've been using SM for > about 8 or 9 years now though all of my installations are 100% > SSL(I handle SSL redirections etc in apache rather than in > SM's config or plugins). > > I suggest testing it in firefox and using the live http headers > plugin to see exactly where the browser is trying to go. > > nate > > Apparently a new update to SquirrelMail just replaced one released late last week. Actually, this might be from the Dag repository. Either way, after doing the update and restarting my browser, SM started to work as it should. Note that this is a CentOS 4 box. I did notice PHP undefined variable charset over and over in the logs up until the new update was applied. This from mime.php line 317. It's been more than a day here... sorry to not be putting together more info chasing this down. Thanks, John Hinton ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
Am 21.01.2009 um 00:47 schrieb Jure Pečar: > On Wed, 21 Jan 2009 00:09:38 +0530 > linux-crazy wrote: > >> Hi all, >> >> I am facing facing performance issues with our web servers which is >> working for concurrent 250 requests properly and then stops >> responding when the requests are more than 250 . >> >> ... >> >> Can any one guide me tuning to be done for the maximum utilization >> of the Resources and better performance of the Servers. > > Also take a look at apache alternatives like lighttpd and nginx. In > certain > cases they do miracles. I don't know about lighttpd (our results were mixed) - but NGINX is really _very_ fast. Last time I checked, it seems to be the fastest way to accelerate webpage-delivery on generic hardware and with OSS-software. But it's not a feature-monster like apache, so you still need that. ;-) Rainer ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
Akemi Yagi wrote: > > http://www.centos.org/modules/newbb/viewtopic.php?topic_id=18223&forum=37 > Would it be possible to migrate this info to a wiki page ? So more people can edit the main content, perhaps a link from the wiki page to this forum post so people who want to talk about it, can carry on doing so - but still refer people to the wiki page for a real status update / release situation. -- Karanbir Singh : http://www.karan.org/ : 2522...@icq ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RHEL 5.3 released
On Tue, Jan 20, 2009 at 4:04 PM, Karanbir Singh wrote: > Akemi Yagi wrote: >> >> http://www.centos.org/modules/newbb/viewtopic.php?topic_id=18223&forum=37 >> > > Would it be possible to migrate this info to a wiki page ? So more > people can edit the main content, perhaps a link from the wiki page to > this forum post so people who want to talk about it, can carry on doing > so - but still refer people to the wiki page for a real status update / > release situation. Certainly it is possible. Tim? Ralph? Fabian? Ned? Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] ext4 in 5.3
Hi guys - I'm really looking forward to 5.3 for the potential of ext4. I am moving/copying image files lately 8G file and it is slow. I am hoping that ext4 really speeds that up. My question is: will we be able to boot ext4 file systems? Will the boot partition still be ext3 and then have to mount the ext4 filesystem? I did not see mention of it in the release notes. Thanks, Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4 in 5.3
On Tue, 2009-01-20 at 20:33 -0500, Jerry Geis wrote: > Will the boot partition still be ext3 and then have to mount the ext4 > filesystem? Yes, but you wouldn't gain much by making /boot ext4. -- Ignacio Vazquez-Abrams PLEASE don't CC me; I'm already subscribed signature.asc Description: This is a digitally signed message part ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] combining kickstart and DVD on a USB thumbdrive
Hi all, I am trying to find information on taking a DVD of centos 5.2 x86_64 and putting it AND my kickstart file on a USB8G thumbdrive. Note - I am not INSTALLING linux on the USB disk just trying to make installation media for it. I am not taking just the bootdisk.img file to make the USB bootable but the entire DVD content on the USB and my kickstart files. I'd like to just be able to plug in a USB disk that I have made that has all the kickstart information and the machine is just setup based on WHICHEVER usb thumbdrive in place in the machine. Is there something out there that explains this that I have not found? Thanks for any pointers. Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] combining kickstart and DVD on a USB thumbdrive
Jerry Geis wrote: > Hi all, > > I am trying to find information on taking a DVD of centos 5.2 x86_64 > and putting it AND my kickstart file on a USB8G thumbdrive. > > Note - I am not INSTALLING linux on the USB disk just trying to make > installation media for it. I am not taking just the bootdisk.img file to > make the USB > bootable but the entire DVD content on the USB and my kickstart files. > > I'd like to just be able to plug in a USB disk that I have made > that has all the kickstart information and the machine is just setup > based on WHICHEVER usb thumbdrive in place in the machine. > > Is there something out there that explains this that I have not found? Maybe things have changed in 5.x but I recall some annoying issues with having a USB device plugged in during kickstart as the kernel would sometimes map that device as sda and that could screw up my partitioning scheme. I think it would be easier to put the kickstart file on the DVD and have a different DVD for whatever purpose you want, unless you anticipate needing to change the kickstart file frequently. Same goes for having external SCSI or fiber channel devices connected during kickstart, I always disconnect all block devices other than the boot device whenever possible when using kickstart. That is assuming your looking for a fully automated installer, vs loading kickstart with minimal configs and doing a bunch of manual work during installation. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
On Tue, Jan 20, 2009 at 5:35 PM, Joseph L. Casale wrote: > I am trying to follow a solution that states "edit apache's libtool and > change the following option to "yes": build_libtool_libs=no" which begs > the question, how? :) Anyone care to show me the light? If you'd tell us what it is that you're doing we can help out, or explain any one of a hundred ways that you're doing it wrong. Either one, really. -- During times of universal deceit, telling the truth becomes a revolutionary act. George Orwell ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
>If you'd tell us what it is that you're doing we can help out, or >explain any one of a hundred ways that you're doing it wrong. Either >one, really. I was tearing my hair out trying to get mod_auth_ntlm_winbind working with apache so I could later use adLDAP/Dokuwiki to migrate all our docs out of Exchange Public Folders. The goal was SSO in our AD domain. I had plain LDAP binding against the user asking for permission to Dokuwiki which worked easy and was secure enough but the goal was SSO... I had a total brain fade on the mod_auth_ntlm_winbind compilation but got it working, now I simply can't make apache authenticate a user? Firefox has the network.negotiate-auth.trusted-uris value defined yet simply keeps prompting for authentication while this module causes apache to deliver something to ie that it simply can't even render the page. Samba, Kerberos and winbind are all configured right as the CentOS box has been joined to the domain, and wbinfo and getent return logical data. It's clearly this module and apache that are not working, but this is the only module that provides group support versus username only mapping that I know of. As much as I am getting to like Dokuwiki, if you can reco an easy to use wiki that facilitates SSO from AD clients but runs on Linux I would be grateful. I only have one IIS server and I can't/wont hack at that box, its far to critical. I officially have no more hair. jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4 in 5.3
On Tue, Jan 20, 2009 at 6:33 PM, Jerry Geis wrote: > Hi guys - I'm really looking forward to 5.3 for the potential of ext4. > I am moving/copying image files lately 8G file and it is slow. I am > hoping that ext4 really speeds that up. I don't think it will speed things up much. 8GB files are mostly hardware throughput and ext3/4 will actually be slower because the journalling etc are to make it more robust but at a speed cost. You would probably see better speed by going to ext2. -- Stephen J Smoogen. -- BSD/GNU/Linux How far that little candle throws his beams! So shines a good deed in a naughty world. = Shakespeare. "The Merchant of Venice" ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
On Tue, 2009-01-20 at 21:00 -0700, Joseph L. Casale wrote: > >If you'd tell us what it is that you're doing we can help out, or > >explain any one of a hundred ways that you're doing it wrong. Either > >one, really. > > > I was tearing my hair out trying to get mod_auth_ntlm_winbind working with > apache so I could later use adLDAP/Dokuwiki to migrate all our docs out of > Exchange Public Folders. > > The goal was SSO in our AD domain. I had plain LDAP binding against the user > asking for permission to Dokuwiki which worked easy and was secure enough but > the goal was SSO... > > I had a total brain fade on the mod_auth_ntlm_winbind compilation but got it > working, now I simply can't make apache authenticate a user? Firefox has the > network.negotiate-auth.trusted-uris value defined yet simply keeps prompting > for authentication while this module causes apache to deliver something to ie > that it simply can't even render the page. Samba, Kerberos and winbind are all > configured right as the CentOS box has been joined to the domain, and wbinfo > and getent return logical data. It's clearly this module and apache that are > not > working, but this is the only module that provides group support versus > username > only mapping that I know of. > > As much as I am getting to like Dokuwiki, if you can reco an easy to use wiki > that facilitates SSO from AD clients but runs on Linux I would be grateful. I > only have one IIS server and I can't/wont hack at that box, its far to > critical. > > I officially have no more hair. mod_authz_ldap definitely can use groups or users to authenticate though to be honest, I am only authenticating to OpenLDAP and I do see some references to authenticating to active directory in the documentation. also - my impression was that only IE could use the SSO and Firefox would probably have to login. Craig ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
>mod_authz_ldap definitely can use groups or users to authenticate though >to be honest, I am only authenticating to OpenLDAP and I do see some >references to authenticating to active directory in the documentation. Yeah, I have LDAP working w/ groups using Dokuwiki's built in LDAP auth backend. It was rather trivial to setup... >also - my impression was that only IE could use the SSO and Firefox >would probably have to login. Well, all my firefox clients do it with Squid, it can be done. Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Compile Problem
On Tue, 2009-01-20 at 21:45 -0700, Joseph L. Casale wrote: > >mod_authz_ldap definitely can use groups or users to authenticate though > >to be honest, I am only authenticating to OpenLDAP and I do see some > >references to authenticating to active directory in the documentation. > > Yeah, I have LDAP working w/ groups using Dokuwiki's built in LDAP auth > backend. It was rather trivial to setup... > > >also - my impression was that only IE could use the SSO and Firefox > >would probably have to login. > > Well, all my firefox clients do it with Squid, it can be done. > OK - well, I am pretty much sold on Alfresco but I can't guarantee that it will do the SSO with FF - it definitely will do AD and I think kicks Viewpoint butt. Craig ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Firefox error msg.
After my / disk seemed to be failing and found many files disappeared, I decided to remove it. I moved my other disk to it's place. Long story omitted. After installing my backup of /home and seeing firefox not restart, I started it from the command line with the immediate error: Could not find compatible GRE between version 1.9.0.5 and 1.9.0.5. I'm sorry, I'm at a complete loss. What's a GRE? -- Bob Taylor ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Apache Server Tuning for Performance
Linux-crazy wrote on Wed, 21 Jan 2009 00:09:38 +0530: > KeepAliveTimeout 150 My god, reduce this to 10 or 5. > ServerLimit 251 > MaxClients 251 There's your limit. However, you should check with your hardware if upping it is really desirable. With 4 GB I think you won't be able to handle much more anyway. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
