Discuss June 2006

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217 participants
235 discussions

Old (really old) programs under CentOS.
by Lamar Owen 11 Jun '06

11 Jun '06

Ok, I have a small dilemma, and I'm hoping someone here has had to do this before. I have at a site (not PARI) a server running some mission critical software that was written in 1997 for libc5, under AOLserver 2.3. No, source code is not available for that version of AOLserver (it wasn't open-sourced until version 3.0, and the API changed rather dramatically at that point), not that it would help any, as gcc has undergone so many changes since RH5 that a recompile would be very difficult. The software is currently running on Redhat 5.2 (don't laugh; it's got a 2,716-day uptime right now! (yes, that's over 7 years!)) with the libc5 libs loaded. The server hardware is just about ready to fly apart, and I need to see about running this on more modern hardware. Of course, they already have bought the replacement server, a Dell PowerEdge 1850. No way RH 5.2 is going to load on a PE1850 with the megaraid PERC 4e/Si. Now, I've thought about a couple of possibilities: 1.) QEMU or VMware or similar running a RH5.2 instance under CentOS 4; 2.) Running a libc5 setup on CentOS 4. I'd rather do this, as security fixes would at least be available. Going back to a RH5 machine and working was a real trip; had to use telnet (no ssh on RH5); Kernel 2.0 is still there, no yum, no chkconfig/service subsystem, etc. The custom code is written specifically for AOLserver 2.3 in its tcl dialect and using API functions that don't exist in AOLserver 3.0 or later (or it would be a snap to compile AOLserver 4.0.10 on CentOS4 and roll); there's a couple hundred thousand lines of tcl code here, and while they will be contracting a replacement webapp using Plone/Zope, they aren't ready to transition as yet. -- Lamar Owen Director of Information Technology Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 828-862-5554 www.pari.edu

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Problem with dual-booting soft-RAID
by Kai Schaetzl 11 Jun '06

11 Jun '06

I set up IDE software-RAID on a test machine for testing the recover functionality. The problem is that it somehow won't boot after removing the first disk, although grub etc. seems to be setup okay. Here's some background: 2 disks hda and hdb RAID 1 setup: /dev/md0 (hda1 + hdb1) /boot /dev/md1 (hda2 + hdb2) / /dev/md2 (hda3 + hdb3) swap done with disk druid during initial setup from server disk, so far so good. Then I installed grub to hdb. grub-install complained all the time (I may have given it the wrong parameter), so I used grub directly: root (hd1,0) setup (hd1) That's correct, isn't it? (Is there a way to determine if grub is installed on the correct disk?) I added a third boot entry to the grub.conf (see below). I then removed disk 1 (hda) from the array by unpowering it and rebooted. Unfortunately, that sent me right in the BIOS PXE boot instead of trying the other disk, well, that's a BIOS problem. So I repowered disk 1 and rebooted. The grub on it is still working somehow but just fills the screen with "grub". So I moved disk 2 before disk 1 as a boot device in BIOS and tried again. This time I get a grub prompt. So, grub is obviously correctly installed on it. However, why doesn't it then boot? When I type in the exact same data that I have in grub.conf it boots. I resynced the disks now, but still can't boot normally. grub.conf is like this (taken from another non-RAID, full setup grub.conf and adjusted, so it differs cosmetically): default=0 fallback=2 timeout=10 #splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.9-34.0.1.EL) root (hd0,0) kernel /vmlinuz-2.6.9-34.0.1.EL ro root=/dev/md1 initrd /initrd-2.6.9-34.0.1.EL.img title CentOS-4 Server_CD (2.6.9-34.EL) root (hd0,0) kernel /vmlinuz-2.6.9-34.EL ro root=/dev/md1 initrd /initrd-2.6.9-34.EL.img title CentOS 2 (2.6.9-34.0.1.EL) root (hd1,0) kernel /vmlinuz-2.6.9-34.0.1.EL ro root=/dev/md1 initrd /initrd-2.6.9-34.0.1.EL.img When I change default to 2 it still doesn't boot, just gets me grub. I then reinstalled grub on the resynced hda with the same commands used earlier (adjusted for it, of course) and rebooted with hda as first boot disk. There's still the same behavior as before: booting from hda gives "grub grub grub ...". So, none of two boots like it should. disk 1 cannot boot at all, although resynced and disk 2 only manually. What could be the problem? Kai

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RE: [CentOS] Tape drive throughput
by Bowie Bailey 11 Jun '06

11 Jun '06

Rodrigo Barbosa wrote: > On Fri, Jun 09, 2006 at 03:56:36PM -0400, Bowie Bailey wrote: > > I have a backup spooling onto a DLT drive. Is there any tool that > > will let me monitor the data throughput on the device? > > Throughput on a tape drive is very variable, depending on how you are > writing/reading the data to it. > > So for some meaningful numbers, you would need your backup solution > to provide them. I'm just looking for raw bps flowing to the device. I don't really care about compression and such at the moment, I just want a rough idea of what the drive is doing. -- Bowie

5 14

ServerCD for x86_64
by Lazy 11 Jun '06

11 Jun '06

I can't find it. I checked several mirrors without any luck. There was one in 4.2 days but now it's gone. Will there be one for 4.3 ? -- Michal

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rhel source rpms
by bruce 11 Jun '06

11 Jun '06

hi... new to centos, but i have a few questions... i understand that centos is a derivative of rhel, created from the exact/underluing source files used to create rhel. if this is the case, is it possible to get the actual source SRPMS for either RHEL, or for CentOS? I used to see the source files on the redaht system, but I don't seem to see them anymore... i'm curious to know what's better, using CentOS, or the latest fedora FC version... thanks -bruce bedouglas(a)earthlink.net

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CentOS folding@home team
by Sharon Kimble 10 Jun '06

10 Jun '06

Congratulations to the CentOS folding@home team for breaking through the rank 400 barrier. The next target is the rank 250 :) More information about the team can be found at http://www.sharons.org.uk/cf.html, and we welcome new members and their machines. We always need more members and more machines too :) Sharon. -- 18:47:57 up 8 days, 20:56, 2 users, load average: 1.30, 1.76, 1.61 A taste of linux http://www.sharons.org.uk/taste/index.html efever http://www.efever.blogspot.com/ Centos 4.3, KDE 3.5.2-7.0, OpenOffice 2.0.2 Registered Linux user 334501

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CentOS-announce Digest, Vol 16, Issue 4
by centos-announce-request＠centos.org 10 Jun '06

10 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-2006:0486 Moderate CentOS 3 i386 mailman - security update (Tru Huynh) 2. CESA-2006:0486 Moderate CentOS 3 x86_64 mailman - security update (Tru Huynh) 3. CESA-2006:0544 Moderate CentOS 4 x86_64 mysql - security update (Johnny Hughes) 4. CESA-2006:0544 Important CentOS 4 i386 mysql - security update (Johnny Hughes) 5. CESA-2006:0486 Moderate CentOS 4 x86_64 mailman - security update (Johnny Hughes) 6. CESA-2006:0486 Moderate CentOS 4 i386 mailman - security update (Johnny Hughes) 7. CESA-2006:0486 Moderate CentOS 3 ia64 mailman - security update (Pasi Pirhonen) 8. CESA-2006:0486 Moderate CentOS 4 axp mailman - security update (Pasi Pirhonen) 9. CESA-2006:0486 Moderate CentOS 4 ia64 mailman - security update (Pasi Pirhonen) 10. CESA-2006:0486 Moderate CentOS 3 s390(x) mailman - security update (Pasi Pirhonen) 11. CESA-2006:0486 Moderate CentOS 4 s390(x) mailman - security update (Pasi Pirhonen) 12. CESA-2006:0544 Importatnt CentOS 4 ia64 mysql - security update (Pasi Pirhonen) 13. CESA-2006:0544 Importatnt CentOS 4 alpha mysql - security update (Pasi Pirhonen) 14. CESA-2006:0544 Importatnt CentOS 4 s390(x) mysql - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Fri, 9 Jun 2006 17:53:56 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2006:0486 Moderate CentOS 3 i386 mailman - security update To: centos-announce(a)centos.org Message-ID: <20060609155356.GA26670(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2006:0486 mailman security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2006-0486.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/mailman-2.1.5.1-25.rhel3.5.i386.rpm source: updates/SRPMS/mailman-2.1.5.1-25.rhel3.5.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update mailman Tru -- Tru Huynh (CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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iptables rules
by Abd El-Hameed Ayad 10 Jun '06

10 Jun '06

Hi, I have 2 CentOS servers 82.201.195.123 & 62.139.61.84 I want to deny all ssh logins on port 22 on (62.139.61.84) from any host except from (82.201.195.123) Can anybody tell me such iptables rules to write in /etc/sysconfig/iptables Currently, im using the following rules (on 62.139.61.84) *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -i eth1 -j ACCEPT -A RH-Firewall-1-INPUT -i eth0 -s 82.201.195.123 -j ACCEPT -A RH-Firewall-1-INPUT -m tcp -p tcp --dport 22 -j REJECT -A RH-Firewall-1-INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -i eth0 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT But i found that somebody is bypassing these rules & trying to authenticate with unknown (or wrong password) accounts Thanx in advance

5 4

Virtualhost, Alias & Subdomains
by Dave J. Hornford 10 Jun '06

10 Jun '06

I am having a problem with subdomains, alias & virtual hosts Centos 4.3, Apache 2.0.52 & PHP 5.04 I can get the primary to work, but not the aliased servers. http.conf extract ********* NameVirtualHost * <VirtualHost *> ServerName www.domain.com DocumentRoot /var/www/html/domain/ ServerAlias www.altdomain.com <http://www.altdomain.com> </VirtualHost> <VirtualHost *> ServerName subdomain.domain.com DocumentRoot /var/www/html/subdomain/ ServerAlias www.subdomain.altdomain.com <http://www.subdomain.altdomain.com> </VirtualHost> ********** dave

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Mouse problems
by Mace Eliason 10 Jun '06

10 Jun '06

Hi I am running Centos 4.3 and I having irratic problems with my mouse. I have the same problems with other versions of centos as well. I have search and tried everything that I could find but still it's not working right. It is a new microsoft laser wireless mouse 6000 For the most part it seems to work okay but it the buttons seem to click on there own a you move the mouse. For example if I click on the menu it drops down as long as the mouse is moving down the menu its fine as soon as I stop it loads what ever progam the mouse is on. Clicking has problems to some time you have to click serveral times to get it to work. Or you click a check box and when you move the mouse off the check box it un checks. I have check the X config file and it is set to what is suggested for usb mice. Any one have similar problems. If I plug in a regular optical usb mouse it works just fine. Mace

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Discuss June 2006