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apache 2.2.22 on CentOS 5...
by John Doe 01 Feb '12

01 Feb '12

Hi, while the brand new apache 2.2.22 compiles fine on CentOS 6, it fails on CentOS 5 unless you tell him to use its internal apr lib...I saw in the 2.2.22 release notes: "This release includes the Apache Portable Runtime (APR) version 1.4.5 and APR Utility Library (APR-util) version 1.4.2, bundled with the tar and zip distributions. The APR libraries libapr and libaprutil (and on Win32, libapriconv version 1.2.1) must all be updated to ensure binary compatibility and address many known security and platform bugs. APR-util version 1.4 represents a minor version upgrade from earlier httpd source distributions, which previously included version 1.3." On CentOS 6, we have apr 1.3.9 On CentOS 5, apr 1.2.7 Anyone knows if it will be backported to the packaged apr...? Thx, JD

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timeconfig
by Jerry Geis 01 Feb '12

01 Feb '12

There used to be a timeconfig command in 5.X - doesnt seem present in 6.X yum provides "*/timeconfig" Loaded plugins: fastestmirror, refresh-packagekit Loading mirror speeds from cached hostfile * base: mirror.us.leaseweb.net * extras: mirror.umd.edu * updates: mirror.umd.edu No Matches found Whats the new command to set the timezone? jerry

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first steps in selinux: cron.daily and postfix
by Helmut Drodofsky 01 Feb '12

01 Feb '12

Hello, my CentOS 6.2 server sends the daily messages correct e.g. today at Feb 1 03:31:14 At the beginning of work hours (9:00 am local time): Feb 1 10:06:17 server postfix/sendmail[27125]: fatal: chdir /var/spool/postfix: Permission denied Solution: restorecon -R /var/spool/postfix/ Afterwards, postfix is OK again. My own cron jobs will be run latest 1 am What daily cron job destroys the selinux permissions? -- Viele Grüße Helmut Drodofsky Internet XS Service GmbH Heßbrühlstraße 15 70565 Stuttgart Geschäftsführung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel. 0711 781941 0 Fax: 0711 781941 79 Mail:info@internet-xs.de www.internet-xs.de

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GUI login issues over NFS
by Weiner, Michael 01 Feb '12

01 Feb '12

I am at my wits end, googling, trying various things, and nothing seems to really solve my problem, so I thought I would break down and write to the community to see if anyone else has run into the issue and actually solved it. My environment of interest contains a mix of various Fedora and CentOS workstations that all participate in NIS for user authentication which then, upon a successful login, automount an NFS $HOME directory. And here is the rub, I am migrating that NFS back end FROM a Sun X4540 (which has been working flawlessly for the past few years) to an HP X9320 Ibrix system. I replicated my NFS exports from one system to the other, and have tested command line logins over SSH using NIS credentials and that all seems to work quite well. However, whenever a CentOS (or even Fedora for that matter) desktop user tries to log in (either Gnome or KDE) they are unable to successfully log in - and are presented with the nebulous .dmrc error as follows: User's $HOME/.dmrc file is being ignored. This prevents the default session and language from being saved. File should be owned by user and have 644 permissions. User's $HOME directory must be owned by user and not writeable by any other users. Followed promptly by Your session only lasted less than 10 seconds. If you have not logged out yourself this could mean that there is some installation problem or that you may be out of disk space. Try logging in with one of the failsafe sessions to see if you can fix this problem. Now I have, of course, checked the permissions and ownership of the $HOME directory and also the .dmrc file and they are correct - but no matter what I do, this fails. Things I have tried: with NIS turned on, without NIS turned on, using automount, without using automount, using all different kinds of NFS options passed to a local mount of the /ibrix/testing area which I am using to test GUI logins from the local workstation under Gnome or KDE - all to no avail. And of course I have spent countless hours/days googling and have even written to HP for some advice. I am pretty confident that perms/ownerships are correct, but I just cant seem to get anything to work. Has anyone run into a similar problem? Has anyone found a solution? Does anyone have any suggestions that I am not thinking about? I appreciate your time and assistance Michael Weiner =================================== Please consider the environment before printing this e-mail Cleveland Clinic is ranked one of the top hospitals in America by U.S.News & World Report (2010). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you.

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How does a linux DHCP machine inform DNS of its name and obtained address
by Jerry Geis 01 Feb '12

01 Feb '12

I am using a number of DHCP devices on a network. Working fine with CentOS 5 x86_64. My question is now how do I tell the DNS (after I get my DHCP address) about my devices name and IP address so that others can find me by my machine name? I thought that was an automatic thing - but it appears not. Thanks, Jerry

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Re: [CentOS] How does a linux DHCP machine inform DNS of its name and obtained address
by Les Bell 01 Feb '12

01 Feb '12

Jerry Geis <geisj(a)pagestation.com> wrote: >> My question is now how do I tell the DNS (after I get my DHCP address) about my devices name and IP address so that others can find me by my machine name? << I wrote this years ago, so it might need updating, but the basics should still be the same. http://www.lesbell.com.au/Home.nsf/web/Dynamic+DNS+Updates+with+TSIG+for+Se… Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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Quantum scalar i40 tape partitions
by Xinhuan Zheng 01 Feb '12

01 Feb '12

Hi All, I have a Quantum scalar i40 tape library. I need to configure it to TWO tape partition libraries, e.g., library_a and library_b, so that each library has its own tape drive. Then connect this physical tape library to two different CentOS servers so that each server can see its own media changer and tape drive. I once had a successful configuration on one host but NOT on the other. One host sees the media changer and one tape drive, while the other host only sees the tape drive. After I delete tape partitions and re-create them both servers are totally screwed up. This is CentOS 5.7 kernel 2.6.18-274. On one server: # cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: HP Model: Ultrium 5-SCSI Rev: Z58Z Type: Sequential-Access ANSI SCSI revision: 06 Host: scsi0 Channel: 00 Id: 00 Lun: 01 Vendor: QUANTUM Model: Scalar i40-i80 Rev: 135G Type: Medium Changer ANSI SCSI revision: 03 # mtx -f /dev/sg0 inquiry mtx: Request Sense: Long Report=yes mtx: Request Sense: Valid Residual=no mtx: Request Sense: Error Code=70 (Current) mtx: Request Sense: Sense Key=Illegal Request mtx: Request Sense: FileMark=no mtx: Request Sense: EOM=no mtx: Request Sense: ILI=no mtx: Request Sense: Additional Sense Code = 25 mtx: Request Sense: Additional Sense Qualifier = 00 mtx: Request Sense: BPV=no mtx: Request Sense: Error in CDB=no mtx: Request Sense: SKSV=no INQUIRY Command Failed # mtx -f /dev/sg1 inquiry mtx: Request Sense: Long Report=yes mtx: Request Sense: Valid Residual=no mtx: Request Sense: Error Code=70 (Current) mtx: Request Sense: Sense Key=Illegal Request mtx: Request Sense: FileMark=no mtx: Request Sense: EOM=no mtx: Request Sense: ILI=no mtx: Request Sense: Additional Sense Code = 25 mtx: Request Sense: Additional Sense Qualifier = 00 mtx: Request Sense: BPV=no mtx: Request Sense: Error in CDB=no mtx: Request Sense: SKSV=no INQUIRY Command Failed On the other server: tape drive (/dev/st0 not even present). Can someone please help? Thanks, - xinhuan

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libz.so.1 => not found
by Dvorkin, Asya 31 Jan '12

31 Jan '12

Hello, We have an older AFS server, which was running Centos 5.5. It hasn't been updated in a while because of the plans to move it to another server, but it never happened. Thus, we've decided to upgrade it to 5.7… I did yum clean all and yum update. Everything ran smoothly and no issues. After the reboot, zlib.so.1 can no longer be found. /usr/lib64/zlib.so.1 is a symbolic link to /lib64/zlib.so.1, but the file does not exist. Because of this, ssh/yum/rpm do not work… I've been googling, but can't find a solid answer. This is a production server and I need to have it up and running as soon as possible… Any ideas? Thank you! Asya

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Re: [CentOS] rsync from rescue boot
by Les Mikesell 31 Jan '12

31 Jan '12

On Tue, Jan 31, 2012 at 1:50 PM, <m.roth(a)5-cent.us> wrote: > <snip> >>> That's odd, try rsync -e 'ssh -v' to get some more details. >>> Also you will want to use some parameters to rsync (like -av or maybe >>> even >>> -z for compression etc). >> >> I'm getting a >> usage: ssh [bunch of ssh options] >> like it is giving the wrong command line to ssh. Or maybe the lack of >> an /etc/ssh/ssh_config in this environment is breaking it, although my >> own ssh commands and connections seem to work. I haven't done the >> chroot into the installed mount since I was planning to overwrite it. > > Any chance that either your system, or the rescued system, are blocking > it, because it doesn't know who your host, or your host doesn't know the > rescued host? > > I'd try chrooting and restarting sshd. No, I'm trying to have rsync make an outbound connection over ssh from the rescue environment and getting what looks like an argument error from ssh. Ssh itself works and I can connect to the same target if I run it directly, and the exact same rsync command lines work from a normal host. Either rsync isn't setting up the remote command right, or ssh isn't allowing it and giving a bad error message. The goal here was basically to clone a running machine into a new VMware image booted into rescue mode. Maybe there's a better way to do that anyway. The source is using RAID1 drives in a layout that the VMware converter won't handle. The tar | tar copy seems to be mostly OK with a little tweaking of fstab, etc. I'm going to give 'ReaR' (from EPEL) a try too - it is supposed to do most of the grunge work for you but you have to intervene manually if you want to change the disk layout. -- Les Mikesell lesmikesell(a)gmail.com

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rsync from rescue boot
by Les Mikesell 31 Jan '12

31 Jan '12

If I boot a 5.7 install disk with 'linux rescue selinux=0', let it start the network and detect the installed system, ssh seems to work, but rsync fails with "rsync: connection unexpectedly closed (0 bytes received so far) [receiver]). Shouldn't it work as long as the underlying ssh connection works? It doesn't prompt for the ssh password and using -essh doesn't change it. -- Les Mikesell lesmikesell(a)gmail.com

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