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CentOS-announce Digest, Vol 39, Issue 6
by centos-announce-request＠centos.org 15 May '08

15 May '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-2008:0270 Important CentOS 3 i386 libvorbis - security update (Tru Huynh) 2. CESA-2008:0270 Important CentOS 3 x86_64 libvorbis - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Wed, 14 May 2008 14:52:45 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2008:0270 Important CentOS 3 i386 libvorbis - security update To: centos-announce(a)centos.org Message-ID: <20080514125245.GA26796(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2008:0270 libvorbis security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2008-0270.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/libvorbis-1.0-10.el3.i386.rpm updates/i386/RPMS/libvorbis-devel-1.0-10.el3.i386.rpm source: updates/SRPMS/libvorbis-1.0-10.el3.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update libvorbis\* Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

1 0

A couple of CentOS 5.1 issues
by Alfred von Campe 15 May '08

15 May '08

I've finally made the switch to CentOS 5.1 (I had been running 4.6). So far, so good, but I do have a few issues. First, I can not find kermit (or ckermit) in any of the repos (base, extras, centosplus, rpmforge). On my 4.6 systems, /usr/bin/kermit was provided by the package ckermit in the base repo. That package appears to be no longer available. Any ideas where I could find a suitable replacement? Second (and this is probably OT), I use the binary nVidia driver and the keyboard and mouse sharing utility Synergy (http:// synergy2.sourceforge.net, a fantastic utility without which I would be so much less productive). Since upgrading to CentOS 5, if the nVidia card goes into powersave mode, it can not be woken up by moving the cursor from the Synergy server to the Synergy client display (in this case, the CentOS 5.1 systems); you have to hit a key on the keyboard that's physically attached to the CentOS 5 system to wake it up. Is there a way to have the display wake up when the cursor is moved into the client display? Or at least disable this "deep sleep" mode on the nVidia cards? I have not changed the hardware or the version of the nVidia driver when upgrading from CentOS 4.6 to CentOS 5.1, and I did not have this issue before the upgrade. Alfred

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Re: [CentOS] Somewhat OT:
by Ross S. W. Walker 15 May '08

15 May '08

Sorry for the top post. Nagios can start very simple, but has the ability to end up very complex. It's configs take a modular approach, you have monitors, monitors belong in groups, groups have operators/administrators, etc. My big problem with nagios is when I used it last it didn't keep monitor history which makes trending impossible. I eventually went with ipmonitor from solarwinds which has a nice web interface, all the reporting you may want and works pretty much like nagios does, but through a web interface. Very reasonable pricing too. Of course I believe it only runs on windows, but it runs very nicely as a VM guest. -Ross ----- Original Message ----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: CentOS mailing list <centos(a)centos.org> Sent: Tue May 13 07:34:50 2008 Subject: Re: [CentOS] Somewhat OT: 2008/5/13 Kai Schaetzl <maillists(a)conactive.com>: > Sergio Belkin wrote on Mon, 12 May 2008 23:07:20 -0300: > > > [CentOS] Somewhat OT: > > even then please write a senseful subject next time! > > Kai > > -- > Kai Schätzl, Berlin, Germany > Get your web at Conactive Internet Services: http://www.conactive.com > Yes, you're roght Kai, I don't know how I could write such a stupid subject, but it was too late yersterday, and I was writing with a little part of my brain working :) Even so, thanks for your comments, I'd like more experiences about monitoring systems. Again of topic, I want to avoid Nagios because it looks like over complex but if someone has an actual experience demostrating the opposite, I'd be glad to hear. Thanks in advance -- -- Open Kairos http://www.openkairos.com Watch More TV http://sebelk.blogspot.com Sergio Belkin - _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

4 3

Max thin client sessions/gdm limit?
by Ryan Faussett 15 May '08

15 May '08

Greetings, I've been subscribed to this list for some time and I'd like to start off by thanking everyone who helps out on it. This is my first post to it, so please be gentle :-) I have several offices set up with RedHat and CentOS terminal servers. We are using CentOS 4.6 and RedHat 4.6 on them, GDM for the display manager, and PXES (http://sourceforge.net/projects/pxes/) for the boot image. Each terminal server is also the font server, dhcp server, tftp server, dns server, and provides a ldap slave from our master ldap server (at our corporate office) for user accounts and authentication. Everything has been working quite well for some time. However now I seem to have hit a 50 thin client/gdm session limit. I've tested this several times by powering off all of our thin clients and restarting the terminal server, then powering up each thin client one at a time. They all work fine up to the 51st thin client. When I power up the 51st thin client it grabs an ip address, fetches its boot image, proceeds to boot, X starts (gray mesh screen, large X cursor -- gray screen of death?) and then it just sits there. The GDM login/greeter is never presented. Looking at the log file on the terminal server shows: gdm_child_action: Aborting display Running gdm in debug mode gives me this (sorry for the long log dump): May 14 03:08:21 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode QUERY from client 10.2.1.200 May 14 03:08:21 lts-nimbus gdm[4066]: gdm_xdmcp_handle_query: Opcode 2 from 10.2.1.200 May 14 03:08:21 lts-nimbus gdm[4066]: gdm_xdmcp_send_willing: Sending WILLING to 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode REQUEST from client 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_handle_request: Got REQUEST from 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_handle_request: xdmcp_pending=0, MaxPending=4, xdmcp_sessions=50, MaxSessions=80, ManufacturerID= May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_display_dispose_check (200.netbiz.com:0) May 14 03:08:24 lts-nimbus gdm[4066]: gdm_auth_secure_display: Setting up access for 200.netbiz.com:0 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_auth_secure_display: Setting up access May 14 03:08:24 lts-nimbus gdm[4066]: gdm_auth_secure_display: Setting up access for 200.netbiz.com:0 - 1 entries May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_display_alloc: display=200.netbiz.com:0, session id=1696684507, xdmcp_pending=1 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_send_accept: Sending ACCEPT to 10.2.1.200 with SessionID=1696684507 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Looked up 200.netbiz.com:0 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_choose_indirect_lookup: Host 10.2.1.200 not found May 14 03:08:24 lts-nimbus gdm[4066]: gdm_forward_query_lookup: Host 10.2.1.200 not found May 14 03:08:24 lts-nimbus gdm[4066]: gdm_display_manage: Managing 200.netbiz.com:0 May 14 03:08:24 lts-nimbus gdm[4066]: loop check: last_start 0, last_loop 0, now: 1210759704, retry_count: 0 May 14 03:08:24 lts-nimbus gdm[4066]: Resetting counts for loop of death detection May 14 03:08:24 lts-nimbus gdm[6191]: gdm_slave_start: Starting slave process for 200.netbiz.com:0 May 14 03:08:24 lts-nimbus gdm[4066]: gdm_display_manage: Forked slave: 6191 May 14 03:08:24 lts-nimbus gdm[6191]: gdm_slave_start: Loop Thingie May 14 03:08:24 lts-nimbus gdm[6191]: gdm_slave_run: Opening display 200.netbiz.com:0 May 14 03:08:24 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 1 on a retry May 14 03:08:25 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 3 on a retry May 14 03:08:26 lts-nimbus gdm[4066]: (child 5747) gdm_slave_alrm_handler: 10.2.1.220:0 got ARLM signal, to ping display May 14 03:08:26 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:08:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:08:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:08:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:08:28 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 5 on a retry May 14 03:08:30 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:08:30 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:08:30 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:08:30 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:08:33 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 7 on a retry May 14 03:08:38 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:08:38 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:08:38 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:08:38 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:08:40 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 9 on a retry May 14 03:08:49 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 11 on a retry May 14 03:08:54 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:08:54 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:08:54 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:08:54 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:09:00 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 13 on a retry May 14 03:09:13 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 15 on a retry May 14 03:09:26 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:09:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:09:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:09:26 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:09:28 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 17 on a retry May 14 03:09:45 lts-nimbus gdm[6191]: gdm_slave_run: Sleeping 19 on a retry May 14 03:09:58 lts-nimbus gdm[4066]: gdm_xdmcp_decode: Received opcode MANAGE from client 10.2.1.200 May 14 03:09:58 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got MANAGE from 10.2.1.200 May 14 03:09:58 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Got Display=0, SessionID=1696684507 Class=MIT-unspecified from 10.2.1.200 May 14 03:09:58 lts-nimbus gdm[4066]: gdm_xdmcp_handle_manage: Session id 1696684507 already managed May 14 03:10:04 lts-nimbus gdm[6191]: gdm_slave_quick_exit: Will kill everything from the display May 14 03:10:04 lts-nimbus gdm[6191]: gdm_slave_quick_exit: Killed everything from the display May 14 03:10:04 lts-nimbus gdm[4066]: mainloop_sig_callback: Got signal 17 May 14 03:10:04 lts-nimbus gdm[4066]: gdm_cleanup_children: child 6191 returned 4 May 14 03:10:04 lts-nimbus gdm[4066]: gdm_child_action: Aborting display 200.netbiz.com:0 May 14 03:10:04 lts-nimbus gdm[4066]: gdm_display_unmanage: Stopping 200.netbiz.com:0 (slave pid: 0) May 14 03:10:04 lts-nimbus gdm[4066]: gdm_display_dispose: Disposing 200.netbiz.com:0 May 14 03:10:04 lts-nimbus gdm[4066]: gdm_display_unmanage: Display stopped Once this has happened even powering off a working thin client that was able to get a GDM session/login and powering up one that was not still doesn't work. However any of the ones that were working can still be powered up and get a GDM session/login. If I power down all the thin clients, restart the terminal server I can again get any of them to work up to the 51st connection. I've looked through the config files for xfs and gdm but can't find anything relating to any sort of session limit. The only thing that looked remotely close was MaxSessions under the [xdmcp] section which is already set to 100. I spent a couple of hours searching with Google but didn't really find anything other than a bug for a different version of GDM than we are using that caused it to ignore a session limit setting (which I can't seem to find where to set it anyway). I believe everything is pretty much stock distribution. We are using the gdm from rpm "gdm-2.6.0.5-7.rhel4.15". Does anyone have any ideas? I'm not sure what more info to post but I'd be glad to send anymore log info or config files. Any help/suggestions are appreciated, Ryan Faussett

3 3

Re: [CentOS] Somewhat OT:
by Ross S. W. Walker 14 May '08

14 May '08

Really? I thought Outlook does a pretty good job on references. Maybe it's the BB :-( <rant> I really need RIM to update their mailer app on the BB to allow threading and preserve references... Is that so hard RIM?! Is it? </rant> -Ross ----- Original Message ----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: centos(a)centos.org <centos(a)centos.org> Sent: Wed May 14 06:48:50 2008 Subject: Re: [CentOS] Somewhat OT: Ross S. W. Walker wrote: > > Sorry for the top post. Your mailer breaking references and thus destroying threading for others is worse than top posting >:) Cheers, Ralph ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

2 1

Printing: network host busy
by centos＠911networks.com 14 May '08

14 May '08

H, I have 5.1. The other day I was printing and the job crashed. I cleaned the /var/spool/cups, but I am still getting the: network 192.168.2.10 host is busy, will retry in 30sec It's a dlink print server, that has worked very well for the last 3 years. I have restarted but the print server and the printer. Any suggestion? -- Thanks

2 1

NFS subdirectory on client is out of sync
by Theo Band [GreenPeak] 14 May '08

14 May '08

Today a user asked me whether a file on one host can be different on another host. I was busy composing an answer to tell that the /home space on all clients are mounted using NFS from the file server. Any host will therefor see the same file. The user pointed me to his file and I copied this file from the client and compared this with the file on the file server. To my surprise it turned out that he was right, the files were different. I created a new file in this directory and it was not created on the file server. I renamed the file, and that was only seen on this single client. How can this happen? My setup file server (arend) CentOS release 4.6 # grep /home /etc/exports /home *(rw,sync,no_subtree_check) On the clients (also CentOS release 4.6) I mount /home with these options: arend:/home /home nfs proto=tcp,nfsvers=3,bg,defaults 0 0 To debug I created (su stbo) on the client small test files (touch test) in each directory all the way to the user /home dir. It turns out that one subdirectory and everything below was not synchronized to the server. I could create files, move them, but it was just as if I was working on a local disk. Other users did not experience any problem on this machine so it was only one sub-directory (and everything below). I checked the syslog both on the client and on the server, but no messages of interest. [root@arend ~]# stat /home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd File: `/home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd' Size: 53214 Blocks: 112 IO Block: 4096 regular file Device: fd01h/64769d Inode: 6614395 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 635/ stbo) Gid: ( 635/ stbo) Access: 2008-05-14 12:46:34.000000000 +0200 Modify: 2008-05-14 10:08:07.000000000 +0200 Change: 2008-05-14 10:08:07.000000000 +0200 I renamed the filename on the client and did stat there as well. The modify time shows this file is indeed older as the user mentioned. [stbo@junco /root]$stat /home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd_theo_test File: `/home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd_theo_test' Size: 53214 Blocks: 112 IO Block: 32768 regular file Device: 14h/20d Inode: 6583089 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 635/ stbo) Gid: ( 635/ stbo) Access: 2008-05-14 12:47:07.000000000 +0200 Modify: 2008-04-09 13:09:23.000000000 +0200 Change: 2008-05-14 12:24:24.000000000 +0200 After rebooting everything is normal again: [root@junco ~]# stat /home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd File: `/home/stbo/workarea/toekan/design/dig/vhdl/fpga/fpga_top.vhd' Size: 53214 Blocks: 112 IO Block: 32768 regular file Device: 14h/20d Inode: 6614395 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 635/ stbo) Gid: ( 635/ stbo) Access: 2008-05-14 12:46:34.000000000 +0200 Modify: 2008-05-14 10:08:07.000000000 +0200 Change: 2008-05-14 10:08:07.000000000 +0200 Any clue what could have gone wrong? Since I trust on a working NFS, I like to understand what could have gone wrong. Any suggestions are welcome. Thanks, Theo

1 0

Centosplus kernel does not have framebuffer support?
by Alfred von Campe 14 May '08

14 May '08

I'm still using CentOS 4.6, but have been planning an upgrade to CentOS 5 for quite a while. One of the things that was holding me back is that the CentOS 5.0 kernel did not have the framebuffer support enabled by default. So I waited for CentOS 5.1. However, on one of my test systems I ran into the bad NFS performance issue (see CentOS bug 2635), so I plan to use the centosplus kernel. However, it appears that this kernel does not have the framebuffer support enabled -- arrgghhh! So, is this just an oversight or is there a reason for not enabling the framebuffer support on the centosplus kernel? Alfred (who really wants to upgrade to CentOS 5 but cannot live with the NFS performance issue and does not want to build his own kernel RPMs)

3 10

custom iptables chain jumping
by Fajar Priyanto 14 May '08

14 May '08

Hi all, When we create a custom chain in iptables, should we specifically create a rule to 'jump back' to the previous chain? For example: iptables -A INPUT -j CUSTOMCHAIN iptables -A CUSTOMCHAIN rule1 iptables -A CUSTOMCHAIN rule2 Should we add: iptables -A CUSTOMCHAIN -j INPUT ? Or, it will automatically go back to CHAIN when there's no more rule? Thank you very much, -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 08:22:38 up 1:15, 2.6.22-14-generic GNU/Linux Let's use OpenOffice. http://www.openoffice.org The real challenge of teaching is getting your students motivated to learn.

1 1

Re: Curiosity when installing CentOS 5.1 in addition to W98 & WXP - SOLVED
by MHR 13 May '08

13 May '08

On Mon, May 12, 2008 at 4:47 PM, MHR <mhullrich(a)gmail.com> wrote: > On Mon, May 12, 2008 at 4:35 PM, Scott Silva <ssilva(a)sgvwater.com> wrote: > > on 5-12-2008 10:17 AM MHR spake the following: > > > > > It might not have finished the install, and something made it reboot before > > it had written the grub records. > > > > I figure I'll just start over and sit there to watch while I read a > book or something. (sigh) > Turns out it looks like the DVD didn't burn quite right (even though K3B verified it) and the install aborted about 2/3 of the way through. Thanks! mhr

2 2

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