Discuss July 2008

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347 participants
435 discussions

Anyone using TCP Connection Passing?
by Amos Shapira 04 Jul '08

04 Jul '08

Hello, We are looking at ways to improve our cluster fail-over and one thing that we wonder about is the possibility of passing tcp connections from the primary server to the secondary when the primary dies. I found tcpcp (http://tcpcp.sourceforge.net/) and tcpcp2 (http://tcpcp2.sourceforge.net/) but they seem to be inactive (last release was two years ago) and requires also changes in the application level. I though that I saw somewhere an implementation of the simple idea of having the secondary tracking the connections (sort of "shadowing" the primary) and when the primary disappears it can take over everything. e.g. the following points to some interesting links: http://archive.gscept.com/2006/dev/?p=266 Has anyone here got to implement something like this? Our platform is CentOS 5 x86_64. Thanks, --Amos

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Root-filesystem remounts as read-only during 5.2 upgrade (system completely shoot)
by Bernhard Gschaider 04 Jul '08

04 Jul '08

Judging from the frequency of my messages here one could think that I'm too stupid to upgrade a workstation to 5.2 (but the servers I've tried work without problem) OK. The problem: I've tried to upgrade a 5.1-x86_64-workstation to 5.2. During the upgrade immidiatly after (according to the /var/log/messages) upgrading the two (64 & 32-bit) libgcc-packages an EXT3-error occurs and the root-partition gets remounted in read-only-mode. Consequently ALL following package upgrades throw errors saying this or that can't be done because he can't write to /etc, /usr but in the end yum says everything is OK. (Side info: /var is on a different partition, so it is still writeable) At reboot the machine wants a manual fsck which throws a lot of errors. Then the machine reboots with with a lot of error messages (basically because it can't find /lib64/libgcc_s.so.1 (nothing a symlink can't fix). After that I try to fix things by manually upgrading the libgcc-packages (otherwise yum won'T run). "rpm -q" for selected packages shows that the majority of the packages is still in 5.1-state. Trying to "yum upgrade" again fail because the machine can't find any servers (but network functionality seems OK) So I try to reboot. And now the really strange thing happens: A simple "rpm -q rpm" says that no rpm is installed. Rebuilding the rpm-database doesn't help. So I'm a bit stuck here with a machine that is in limbo. My questions: what could have been the cause for this (the machine was working OK before that). The only thing I feel a little guilty about was deinstalling the nvidia-kernel-driver and not reboot, but this can't f### up the file-system, can it? Any suggestions what I can do to get the machine into a normal state again (apart from reinstall from scratch)

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CentOS 5.2 vs. Intel 82801 AC'97 Audio
by MHR 04 Jul '08

04 Jul '08

I have installed 5.2 on my work desktop and everything works perfectly EXCEPT the sound device. Here is the relevant lspci line: 00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01) I tried looking in Google (might have been a bad search), but all I could find was to add acpi=on to my boot line in grub.conf, and that didn't do any good. The volume control shows muted and I can't enable it. What am I missing? Thanks. mhr

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command for brand of monitor
by Jerry Geis 03 Jul '08

03 Jul '08

Is there a linux command that would tell me what model of monitor is presently attached to my computer? Thought about automating different setups based on the monitor connected. X config files basically. Could be done with different kickstart files - but would like to not go there if I dont have to. Jerry

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centos 5, openmpi and alternatives
by Tony Schreiner 03 Jul '08

03 Jul '08

When I install openmpi, openmpi-libs and openmpi-devel (using yum) for CentOS 5, I'm not getting anything set in alternatives for mpi- run and mpicc, etc. Is it supposed to? Cheers, Tony Schreiner Boston College

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FF3 printing problem on Centos 4.x
by fred smith 03 Jul '08

03 Jul '08

I'm using Centos 4.x (fully up to date) on a system at work. I have also been using firefox 2 (directly from mozilla.org) on it for a long time, and it tends to work just fine. yesterday I installed the new FF3 release. It works fine too, with one exception: The print dialog shows no printers! The print button is greyed out! There actually four or five printers defined on the system, and all other apps find them fine, including FF2. So far no one has replied to my query on the mozillazine forums. Anyone here got any suggestions I can try? Thanks! -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ------------------------ ---- Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary, and his understanding no one can fathom. ----------------------------- Isaiah 40:28 (niv) -----------------------------

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Centos 5.2 upgrade - urlopen error unknown url type: media
by Robert Moskowitz 03 Jul '08

03 Jul '08

My first notebook upgrade: I repaired my old HP nc4010 (bought a new hinge on ebay) and realized this was the perfect way to test out the upgrade to 5.2 before doing it on my production notebook. First I updated to 'current' 5.1 (by current I mean I have not synced my 5.1 local repo since building my 5.2 repo). I had not used my nc4010 for a while and the kernel was at 2.6.18-53.1.13 (update took it to 1.21). Rebooted and system still working. I then pointed my CentOS-Base.repo to my 5.2 repo. I did a yum clean all then a yum update yum* rpm and below is what happened: ======================================================= [root@nc4010 yum.repos.d]# yum clean all Loading "installonlyn" plugin Cleaning up Everything [root@nc4010 yum.repos.d]# yum update yum* rpm Loading "installonlyn" plugin Setting up Update Process Setting up repositories http://linuxdownload.adobe.com/linux/i386/repodata/repomd.xml: [Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')> Trying other mirror. Error: Cannot open/read repomd.xml file for repository: adobe-linux-i386 [root@nc4010 yum.repos.d]# /etc/sysconfig/network-scripts/ifup-eth eth0 [root@nc4010 yum.repos.d]# yum update yum* rpm Loading "installonlyn" plugin Setting up Update Process Setting up repositories adobe-linux-i386 100% |=========================| 951 B 00:00 kbs-CentOS-Extras 100% |=========================| 951 B 00:00 base 100% |=========================| 1.3 kB 00:00 updates 100% |=========================| 951 B 00:00 addons 100% |=========================| 951 B 00:00 extras 100% |=========================| 1.1 kB 00:00 Reading repository metadata in from local files primary.xml.gz 100% |=========================| 10 kB 00:00 ################################################## 17/17 primary.xml.gz 100% |=========================| 157 B 00:00 primary.xml.gz 100% |=========================| 821 kB 00:00 ################################################## 2453/2453 primary.xml.gz 100% |=========================| 91 kB 00:00 ################################################## 165/165 primary.xml.gz 100% |=========================| 157 B 00:00 primary.xml.gz 100% |=========================| 74 kB 00:00 ################################################## 244/244 Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Downloading header for yum-metadata-parser to pack into transaction set. media://1213888991.267240%231/CentOS/yum-metadata-parser-1.1.2-2.el5.i386.rpm: [Errno 4] IOError: <urlopen error unknown url type: media> Trying other mirror. Error: failed to retrieve CentOS/yum-metadata-parser-1.1.2-2.el5.i386.rpm from base error was [Errno 4] IOError: <urlopen error unknown url type: media> ======================================================= I rebooted my local repo server. No change. I downloaded a new copy of yum-metadata-parser-1.1.2-2.el5.i386.rpm from mirror.centos.org/centos/5.2/os/i386/CentOS/. No change. (dated Jun 14, mine was dated Jun 24, the day I built my repo. but file sizes are identical). What am I missing here?

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Running shell scripts from external media
by James B. Byrne 03 Jul '08

03 Jul '08

OS=CentOS-5.2 media=Kingston 512Mb usb key Problem: As 'root', when running a script resident on the external drive mounted at /media/disk I receive the following error: /bin/sh: bad interpreter: Permission denied The meduia is a 512Mb USB key formatted as ext2/3 # ll -rwx------ 1 root root 28 Jul 2 17:30 hello.sh # cat hello.sh #!/bin/sh echo Hello World! # which sh /bin/sh I believe that this can be resolved by an entry in /etc/fstab but I cannot determine what entry to make. # cat /etc/fstab /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 LABEL=/boot /boot ext3 defaults 1 2 devpts /dev/pts devpts gid=5,mode=620 0 0 tmpfs /dev/shm tmpfs defaults 0 0 /dev/VolGroup00/LogVol03 /home ext3 defaults 1 2 proc /proc proc defaults 0 0 sysfs /sys sysfs defaults 0 0 /dev/VolGroup00/LogVol02 /tmp ext3 defaults 1 2 /dev/VolGroup00/LogVol04 /var/log ext3 defaults 1 2 /dev/VolGroup00/LogVol05 /var/www ext3 defaults 1 2 /dev/VolGroup00/LogVol01 swap swap defaults 0 0 >From the logs I gather that the device is sda1 Jul 2 16:42:45 inet02 kernel: SCSI device sda: 1001472 512-byte hdwr sectors (513 MB) Jul 2 16:42:45 inet02 kernel: sda: Write Protect is off Jul 2 16:42:45 inet02 kernel: sda: assuming drive cache: write through Jul 2 16:42:45 inet02 kernel: sda: sda1 Jul 2 16:42:45 inet02 kernel: sd 0:0:0:0: Attached scsi removable disk sda Jul 2 16:42:45 inet02 kernel: EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended Jul 2 16:42:46 inet02 hald: mounted /dev/sda1 on behalf of uid 500 I deduce from the various bits of information that I have gleaned thatthe proper entry in fstab should be something like: /dev/sda1 /disk auto defaults,user,exec 0 0 However, this is an automounted, removable media. How do I do enable execute for this key and retain the auto mount capability? What impact will this have on other usb keys? -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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mock 0.9.{7,10}
by David Hrbáč 03 Jul '08

03 Jul '08

Hi, someone successfully using mock 0.9.{7,10} on Centos 5.2 (64bit)? I'm trying to use 0.9.10, but I'm not able to produce right cfg files for centos builds, cfg files for fedora work fine. Thanks, David

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CentOS-announce Digest, Vol 41, Issue 1
by centos-announce-request＠centos.org 03 Jul '08

03 Jul '08

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-2008:0547 Critical CentOS 3 i386 seamonkey - security update (Tru Huynh) 2. CESA-2008:0547 Critical CentOS 3 x86_64 seamonkey - security update (Tru Huynh) 3. CESA-2008:0549 Critical CentOS 3 i386 firefox - security update (CentOS plus ONLY) (Tru Huynh) 4. CESA-2008:0549 Critical CentOS 3 x86_64 firefox - security update (CentOS plus ONLY) (Tru Huynh) 5. CESA-2008:0547 Critical CentOS 4 i386 seamonkey - security update (Johnny Hughes) 6. CESA-2008:0547 Critical CentOS 4 x86_64 seamonkey - security update (Johnny Hughes) 7. CESA-2008:0549 Critical CentOS 4 i386 firefox - security update (Johnny Hughes) 8. CESA-2008:0549 Critical CentOS 4 x86_64 firefox - security update (Johnny Hughes) 9. CESA-2008:0547-01: Critical CentOS 2 i386 seamonkey security update (John Newbigin) 10. CESA-2008:0521-03: Low CentOS 2 i386 end of life notice (John Newbigin) ---------------------------------------------------------------------- Message: 1 Date: Wed, 2 Jul 2008 21:43:27 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2008:0547 Critical CentOS 3 i386 seamonkey - security update To: centos-announce(a)centos.org Message-ID: <20080702194327.GA26995(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2008:0547 seamonkey security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2008-0547.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/seamonkey-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-chat-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-devel-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-dom-inspector-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-js-debugger-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-mail-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-nspr-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-nspr-devel-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-nss-1.0.9-0.20.el3.centos3.i386.rpm updates/i386/RPMS/seamonkey-nss-devel-1.0.9-0.20.el3.centos3.i386.rpm source: updates/SRPMS/seamonkey-1.0.9-0.20.el3.centos3.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update seamonkey Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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Discuss July 2008