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how to 'yum update' in a %post
by Tom Brown 06 Jun '06

06 Jun '06

Hi After a kickstart install how do you get a yum update to run as the final stage of the install? a 'yum update' in the %post does not seem to do anything at all - no errors just nothing? thanks

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CentOS 4.x - Multiple gateways
by Tom Brown 06 Jun '06

06 Jun '06

Hi On a multihomed box how can i set different gateways for each NIC? Setting them in the ifcfg-ethx does not seem to make any difference to the routing? thanks

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Swap: typical rehash. Why?
by William L. Maltby 06 Jun '06

06 Jun '06

I can't resist. Read the thread that was pointed to on lkml. ROTFLMAO. *Real* UNIX addressed these problems long ago. I guess the "Gurus" suffer from NIH (Not Invented Here) syndrome. Given a "general purpose" system, tunability is a must. UNIX, as delivered by USL in such examples as Sys V, had tunables that let admins tune to their needs. A single "swappiness" value is woefully inadequate. Among the tunables were how much memory for cache, how much for buffers, how much for X/Y/Z, high and low water marks for all sorts of memory related stuff and a very valuable attribute bit for executables called the "sticky bit". It is not the "sticky bit" as used now. It said lock this app in memory and never swap it. A variation on that (couldn't keep original semantics with the size of apps these days) would address some of the "responsiveness" issues raised by some. Some admin tunables would address the other issues. The "Gurus" need to learn something my father taught me. "A smart man learns from his mistakes. A wise man learns from the mistakes of others". I'm really smart. :-( And, apparently, so are the "Gurus". To think they have VM this long and no one has thought to swipe these good ideas from real UNIX. And they're still argueing about all that as if it has never been hashed out and addressed before. -- Bill

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CentOS-announce Digest, Vol 16, Issue 2
by centos-announce-request＠centos.org 05 Jun '06

05 Jun '06

Send CentOS-announce mailing list submissions to centos-announce(a)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-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)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-2006:0533-01: Moderate CentOS 2 i386 zebra security update (John Newbigin) 2. CESA-2006:0502-2: Low CentOS 2 i386 bash bug fix update (John Newbigin) ---------------------------------------------------------------------- Message: 1 Date: Mon, 05 Jun 2006 09:49:28 +1000 From: John Newbigin <jnewbigin(a)ict.swin.edu.au> Subject: [CentOS-announce] CESA-2006:0533-01: Moderate CentOS 2 i386 zebra security update To: centos-announce(a)centos.org Message-ID: <44837188.9080805(a)ict.swin.edu.au> Content-Type: text/plain; charset=us-ascii; format=flowed The following errata for CentOS-2 have been built and uploaded to the centos mirror: RHSA-2006:0533-01 Moderate: zebra security update Files available: zebra-0.91a-11.21AS.i386.rpm More details are available from the RedHat web site at https://rhn.redhat.com/errata/rh21as-errata.html The easy way to make sure you are up to date with all the latest patches is to run: # yum update -- John Newbigin Computer Systems Officer Faculty of Information and Communication Technologies Swinburne University of Technology Melbourne, Australia http://www.ict.swin.edu.au/staff/jnewbigin ------------------------------ Message: 2 Date: Mon, 05 Jun 2006 09:52:14 +1000 From: John Newbigin <jnewbigin(a)ict.swin.edu.au> Subject: [CentOS-announce] CESA-2006:0502-2: Low CentOS 2 i386 bash bug fix update To: centos-announce(a)centos.org Message-ID: <4483722E.7010909(a)ict.swin.edu.au> Content-Type: text/plain; charset=us-ascii; format=flowed The following errata for CentOS-2 have been built and uploaded to the centos mirror: RHBA-2006:0502-2 bash bug fix update Files available: bash-2.05-8.7.i386.rpm bash-doc-2.05-8.7.i386.rpm More details are available from the RedHat web site at https://rhn.redhat.com/errata/rh21as-errata.html The easy way to make sure you are up to date with all the latest patches is to run: # yum update -- John Newbigin Computer Systems Officer Faculty of Information and Communication Technologies Swinburne University of Technology Melbourne, Australia http://www.ict.swin.edu.au/staff/jnewbigin ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 16, Issue 2 **********************************************

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OpenOffice 2.0 rpms
by Gavin Carr 05 Jun '06

05 Jun '06

Was just wondering if anyone knows of any third-party RPMs for Open Office 2.0 for CentOS 4? Haven't come up with anything via yum or rpm.pbone.net yet, and would prefer not to go the openoffice.org binary installer route if possible. Cheers, Gavin -- Open Fusion - Open Source Business Solutions [ Linux - Perl - Apache ] http://www.openfusion.com.au - Fashion is a variable, but style is a constant - Programming Perl

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Remote reboot problem
by Sam Drinkard 05 Jun '06

05 Jun '06

Don't know if this might be hardware or software related, but it seems that every time I attempt to do a remote reboot of the machine, everything shuts down normally, and it never comes back. Just returned from the co-lo site, and when I plugged the monitor in, it had gone to the point of "rebooting" and hung. This is 4.3 on x-86. Sam -- Sam W.Drinkard -- sam(a)wa4phy.net WEB http://wa4phy.net Augusta Area Mesonet cell 706.825.8513 Home 706.868.7253 MAIL 4428 Branchwood Drive, Martinez Georgia, 30907-1304

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USB scanner setup: questions, problems
by Niki Kovacs 05 Jun '06

05 Jun '06

Hi, I have a small home LAN consisting of four PC's: one old Pentium III box acting as gateway / connection handler / printer server / file server / scanner server, and then one desktop and two laptops. I recently migrated this LAN from Slackware 10.2 to CentOS 4.3, and everything runs rather fine. One thing I have some trouble setting up is my Canon Perfection USB scanner for network use, which worked fine with Slackware, because things work a bit differently under CentOS. The scanner is attached to the "server" box (192.168.1.1) with a minimal install of CentOS, no window manager, no X. I installed sane-backends on this machine and ran scanimage -L as root, which gave this: [root@babasse ~]# scanimage -L device `epson:libusb:001:002' is a Epson Perfection610 flatbed scanner I read the various docs on sane-project.org, especially this document: http://penguin-breeder.org/sane/saned/ My first problem, and apparently one big difference between CentOS and Slackware, is that there is no entry for the scanner in /dev. Now what does the above output of scanimage -L exactly mean? That my scanner device file is /proc/bus/usb/001/002? [root@babasse 001]# ls -l /proc/bus/usb/001/002 -rw-r--r-- 1 root root 50 jun 5 08:57 /proc/bus/usb/001/002 Now, if that is the case (if not: correct me please), how do I change permissions to that device file? So it doesn't belong to root.root, but to saned.saned, according to the document linked above. By the way: saned.saned doesn't exist, so I just created this system user like this: # useradd -d /dev/null -s /bin/false saned ... which gives: [root@babasse 001]# cat /etc/passwd | grep saned saned:x:500:500::/dev/null:/bin/false (Did I define this system user in an orthodox way? Or is there a better way to do this?) Now when I su to that user and try to run scanimage -L as saned, I get a "No scanners were found" error, which is most likely a permission problem on the device. Now the big question: how do I fix this? I googled about "libusb hotplug scanner device permissions" and some permutations. The problem is not the lack of information on the subject, but the diverging wealth of it. Any suggestions? Niki Kovacs

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Received signal 11 during kickstart
by Alfred von Campe 05 Jun '06

05 Jun '06

I recently built a CentOS from the 4.3 ISOs. Now I'm ready to build another 10 systems using kickstart. I took the anaconda-ks.cfg file from the first system I built manually, modified it slightly (see below), and made it available via http. I booted the new system from the first CentOS 4.3 CD and typed the following: boot: linux ks=http://hostname/test-ks.cfg Here are the changes I made to the kickstart file: - Replaced "cdrom" with "url --url http://hostname" - Removed xconfig line (slightly different video HW) - Changed the host name in the network line - Uncommented the partition information The system boots the initial kernel, gets an IP address, gets the kickstart file via http, but then dies with a "installation exited abnormally -- received signal 11" message. I've done this successfully in the past. Can a misconfigured kickstart file cause this problem? How can I debug this? Alfred

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kernel: Your time source seems to be instable or some driver is hogging interupts
by Erick Perez 05 Jun '06

05 Jun '06

The following error on a SMP x86_64 Centos 4.3 kernel 2.6.9-34 ELsmp appears at boot. and causes things to compute faster. Example, a wait(5) should wait for 5 seconds....it waits for 3 or 2. This was an open bug for that kernel. Has it been patched in the more recent kernel for Centos 2.6.9-34.0.1 ? dmseg output: Freeing unused kernel memory: 164k freed Losing some ticks... checking if CPU frequency changed. EXT3-fs: INFO: recovery required on readonly filesystem. EXT3-fs: write access will be enabled during recovery. warning: many lost ticks. Your time source seems to be instable or some driver is hogging interupts rip __do_softirq+0x41/0xa2 kjournald starting. Commit interval 5 seconds should I insert noapic at grub.conf? What will I loose if i do noapic? This is a performance oriented, intensive voice over ip server. -- ------------------------------------------- Erick Perez Linux User 376588 http://counter.li.org/ (Get counted!!!) Panama, Republic of Panama

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Kernel update = slower ?
by Sam Drinkard 04 Jun '06

04 Jun '06

This is really strange. Day before, I updated the machine here (x86_64) and all went normal. I rebooted, and everything came back just as I expected. Next morning, I noticed one of my jobs during the night had finished, but finished late by about 8 or 9 minutes. I really didn't think much of it, but after looking at jobs running today, I'm seeing the same thing. Processes that used to take 3.75 hours to complete are now taking 4 hours. ( I have cron jobs that were running to process the data after the main run, and they busted) Nothing has changed in the way the model runs, and there have been no changes to input data or any other parameter that would cause a longer runtime. So, the question is, did something change in the kernel that would make the machine run slower? I do have threading turned on in the bios, and all 4 cpu's are shown via dmesg. In fact, I looked at the dmesg output after a reboot and due to another message about losing clock tics, I just checked that I had not encountered the same. Short of rebooting back into the previous kernel, is there any way to tell if something is slowing the box down? -- Sam W.Drinkard -- sam(a)wa4phy.net WEB http://wa4phy.net Augusta Area Mesonet cell 706.825.8513 Home 706.868.7253 MAIL 4438 Branchwood Drive, Martinez Georgia, 30907-1304

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