Discuss July 2008

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347 participants
435 discussions

How to examine crash dump of Centos Kernel
by Nataraj 19 Jul '08

19 Jul '08

Hi, I have been able to successfully use crash to examine a crash dump of kernel-PAE-2.6.18-92.1.6.el5 using the following command: crash /boot/System.map-2.6.18-92.1.6.el5PAE /usr/lib/debug/lib/modules/2.6.18-92.1.6.el5PAE/vmlinux ./vmcore I then installed the package kernel-debug-2.6.18-92.1.6.el5 and rebooted with that (there is no PAE debugging kernels in the repository). I reproduced my crash and collected a crash dump, however when I try to examine the dump I get the following error: crash /boot/System.map-2.6.18-92.1.6.el5debug /usr/lib/debug/lib/modules/2.6.18-92.1.6.el5/vmlinux ./vmcore crash: v2 module syment space malloc (2005518689 symbols): Cannot allocate memory I have used ulimit in the shell to set all of the limits to unlimited and I still continue to have this problems. Any ideas? Is it possible that I would need a 64 bit OS in order to examine a 4gb crash dump with symbols and debugging information? I have the following kernel-debuginfo packages installed: kernel-debuginfo-common-2.6.18-92.1.6.el5 kernel-PAE-debuginfo-2.6.18-92.1.6.el5 kernel-debuginfo-2.6.18-92.1.6.el5 I am running CentOS 5.2 on a dual Xeon Server with 4gb of memory. Thanks, Nataraj

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Setting max limits in /etc/security/limits.conf
by Dr R L Oswald 19 Jul '08

19 Jul '08

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2 questions on diskless client setup.
by centos＠mjt1.com 18 Jul '08

18 Jul '08

Using Centos 5.2 upgraded from 5.0 using yum on a couple of old Dells in a lab environment. I don't think hardware is part of the problem, just need configuration help. 1: I can boot the diskless client and it come up, but when I do a "mount" command on the client, the output is indistinguishable from the output of the mount command on the server. Currently the fstab in .../root and .../snapshot/<diskless client name> have no entries in them. I set this up using the "how-to" from the Centos web site, I might be missing something. I was wondering if someone could point me to information on how NFS mounts and fstab files work as well as how the "root" and "snapshot" directories work. I'm guessing that snapshot is where you set up the unique personality of each client, while "root" is global to all clients, but I would like info on how it all works together. I could continue to guess and try to figure it out on my own, but my experience has shown that I might get a working solution that is NOT the best. 2: I am running NFS4. I also set up all the diskless clients in an /export directory that is shared with several other exported directories (its a lab, so the devices do double or triple duty). My export file has /exports with the "fsid=0" flag. So, when I mount, I don't have to have "/exports" in the directory string. All is fine until the initial mount done by netboot(?), it issues the first mount command with "/export/diskless/i386/centos5.2/" as the directory string and fails. To work around this, I put a link in that links /export to /export/export and exported /export/export. UGLY I know, but it was the work around I discovered. Anyone know a better way of dealing with this?

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configuration request
by Sam Drinkard 18 Jul '08

18 Jul '08

I've apparently gotten myself into somewhat of a bind. I've been trying to exclude various packages from the different repos, and while I *think* I've gotten a working configuration again, it it still pulling stuff in that I have excluded I think in the right repos, but things I have no use for whatsoever. Items like kernel-hugemem-devel, kernel-hugemem, and anything involving kernel development. I run a stock kernel and am not doing any building of any kind at this point. The machine is an i-686 machine, and a single processor. I'd be very much appreciative if someone could send me,, or post a proper repo config that points to the various exclude lines to get rid of some of the unnecessary files. It's taken me about 2 hours of modifying stuff to finally get a yum repo config to make it all the way thru. Also, can I perhaps just yum erase some of the software I never use, like seamonkey and probably others so it does not even have to look for updates for those packages? Would that be the proper way to eliminate the fluff? Any type of help here would be great! Thanking you in advance, Sam

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configuration request
by Sam Drinkard 18 Jul '08

18 Jul '08

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Re-initialized luci database
by Lopez, Denise 18 Jul '08

18 Jul '08

Hi all, I was just wondering if there was a way to re-initialize a luci database installation. I am trying to setup a 2 node cluster and keep getting "error retrieving batch xxxxxxx information" Also noticed a "Configuration Version" error so I wanted to recreate the luci database and start over. Thanks in advance. Denise Lopez UCLA - Center for Digital Humanities Network Services Linux Systems Engineer 337 Charles E. Young Drive East PPB 1020 Los Angeles, CA 90095-1499 310/206-8216

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Re: [CentOS] semi OT: logwatch results
by Brent L. Bates 18 Jul '08

18 Jul '08

We've been seeing the same type of entries in our Web server logs for at least a couple months now and not just a few entires. It isn't just `azenv.php', but references to other PHP files that do not exist on our systems. They've hit some of our servers so hard I figured it must be some kind of attempt to break in or a weird kind of DOS attack. -- Brent L. Bates (UNIX Sys. Admin.) M.S. 912 Phone:(757) 865-1400, x204 NASA Langley Research Center FAX:(757) 865-8177 Hampton, Virginia 23681-0001 Email: B.L.BATES(a)larc.nasa.gov http://www.vigyan.com/~blbates/

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Yum strangeness
by Sam Drinkard 18 Jul '08

18 Jul '08

Hi all, I was about to do an update on my server, but looking at what the output was and here's the output from the beginning with other parts left off. I currently don't even have the clamav server installed, but am using the 0.93 version of clamav-milter. I've never seen yum throw in so many packages that aren't even installed. I understand the dependencies has to be met, and such, but why is yum trying to install older version of clamav? Perhaps I missed something, but don't think so. Many thanks, Sam Here is the output from yum update ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: clamav-data i386 0.88.2-2.el4.kb kbs-CentOS-Extras 4.1 M replacing clamav-db.i386 0.93.1-1.el4.rf clamav-server i386 0.88.2-2.el4.kb kbs-CentOS-Extras 48 k replacing clamd.i386 0.93.1-1.el4.rf kernel i686 2.6.9-67.0.20.EL update 12 M kernel-devel i686 2.6.9-67.0.20.EL update 3.9 M Updating: autofs i386 1:4.1.3-231.el4_6.2 update 264 k bind i386 20:9.2.4-28.0.1.el4 update 581 k bind-chroot i386 20:9.2.4-28.0.1.el4 update 35 k bind-libs i386 20:9.2.4-28.0.1.el4 update 567 k bind-utils i386 20:9.2.4-28.0.1.el4 update 141 k bluez-libs i386 2.10-3 update 39 k bluez-utils i386 2.10-2.4 update 150 k caching-nameserver noarch 7.3-3.0.1.el4_6 update 22 k clamav i386 0.93.3-1.el4.rf rpmforge 1.3 M clamav-milter i386 0.93.3-1.el4.rf rpmforge 76 k firefox i386 1.5.0.12-0.21.el4.centos update 15 M freetype i386 2.1.9-8.el4.6 update 764 k freetype-devel i386 2.1.9-8.el4.6 update 533 k kernel-hugemem-devel i686 2.6.9-67.0.20.EL update 3.9 M kernel-smp-devel i686 2.6.9-67.0.20.EL update 3.9 M openldap i386 2.2.13-8.el4_6.5 update 237 k openldap-clients i386 2.2.13-8.el4_6.5 update 121 k openldap-devel i386 2.2.13-8.el4_6.5 update 1.3 M perl-Compress-Raw-Zlib i386 2.011-1.el4.rf rpmforge 158 k perl-IO-Compress-Base noarch 2.011-1.el4.rf rpmforge 55 k perl-IO-Compress-Zlib noarch 2.011-1.el4.rf rpmforge 140 k php i386 4.3.9-3.22.12 update 1.3 M php-ldap i386 4.3.9-3.22.12 update 36 k php-mysql i386 4.3.9-3.22.12 update 37 k php-pear i386 4.3.9-3.22.12 update 481 k procps i386 3.2.3-8.9.el4_6.1 update 189 k seamonkey i386 1.0.9-16.4.el4.centos update 8.7 M seamonkey-nspr i386 1.0.9-16.4.el4.centos update 101 k seamonkey-nss i386 1.0.9-16.4.el4.centos update 745 k selinux-policy-targeted noarch 1.17.30-2.150.el4 update 125 k Installing for dependencies: clamav-lib i386 0.88.2-2.el4.kb kbs-CentOS-Extras 144 k Updating for dependencies: clamav-db i386 0.93.3-1.el4.rf rpmforge 15 M clamd i386 0.93.3-1.el4.rf rpmforge 82 k Transaction Summary ============================================================================= Install 5 Package(s) Update 32 Package(s) Remove 0 Package(s) Total download size: 76 M Is this ok [y/N]: n Exiting on user Command Complete!

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Firefox 3.0.1 print error
by Olaf Mueller 18 Jul '08

18 Jul '08

Hello, if trying to print http://www.test.de/themen/versicherung-vorsorge/test/-Unfallversicherung/12… by button "Seite drucken" firefox-3.0.1-1.el5.centos ends in error '(Gecko:4820): Gtk-WARNING **: Unknown paper size A4' and wants to print in "Letter". This also happens under Fedora 8 and with the sources for linux from mozilla.com, but not under Windows XP. Please, could someone test this under Fedora 9, maybe gtk is broken under CentOS 5.1 and Fedora 8? Any idea for a workaround? $ rpm -qa | grep gtk gnome-python2-gtkhtml2-2.14.2-6.el5 gtk+-1.2.10-56.el5 gtk-qt-engine-0.8-4.el5 gtk2-2.10.4-20.el5 pygtk2-2.10.1-12.el5 gtkmm24-2.10.9-1.el5.rf usermode-gtk-1.88-3.el5.1 gtk2-engines-2.8.0-3.el5 gtkhtml2-2.11.0-3 gtkspell-2.0.11-2.1 authconfig-gtk-5.3.21-3.el5 pygtk2-libglade-2.10.1-12.el5 libgtk-java-2.8.7-3.el5 gtk2-devel-2.10.4-20.el5 regards Olaf

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Difference between system-config-* and system-config-*-tui ?
by Fabrice La Farina 18 Jul '08

18 Jul '08

Hello List, I have a little question. What is the difference between the system-config-* and system-config-*-tui ? Thank you. Fabrice

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Discuss July 2008