Discuss June 2009

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286 participants
328 discussions

Rsync, SSH and authorized_keys problem
by Stewart Williams 18 Jun '09

18 Jun '09

Hi, I'm trying to backup from one machine to the other (automatically via cron) using rsync and ssh password-less public key authentication. I having been trying to set this up following an article in a Linux magazine[1] by only allowing the specific rsync command to run on the remote box. I am using the following rsync command: $ rsync -avz -e "ssh -i ~/.ssh/backup-key" /backup stewart@name.of.remote.server:/backup This runs, connects using keys asking for no password and completes successfully until I add the above command to my authorized_keys file on the remote box: command="rsync -avz -e "ssh -i ~/.ssh/backup-key" /backup stewart@name.of.remote.server:/backup" ssh-dss ... key ... The client then says it cannot find the key, so the connection fails. Is it because it's trying to find the private key in the ~/.ssh directory on the remote box? Is the article wrong? Or am I doing something wrong? Should I use the $SSH_ORIGINAL_COMMAND variable? Regards, Stewart Williams [1] http://www.linuxformat.com/pdfs/download.php?PDF=LXF105.tut_backup.pdf

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Cron Mail
by Joseph L. Casale 18 Jun '09

18 Jun '09

Is there any way to prevent mail from completed cron jobs for only say the hourly directory? Thanks! jlc

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Cyrus IMAP and ipurge
by Spiro Harvey 18 Jun '09

18 Jun '09

Anyone here familiar with Cyrus IMAP and its util ipurge? We'd like to set auto deletion of our users' spambox folders, but I'm a bit paranoid about its functionality. The main things that confuse me are from the man page: "Ipurge deletes messages from the mailbox(es) specified by mailbox-pattern" with no indication as to what defines "mailbox-pattern" Second: "Ipurge by default only deletes mail below shared folders, which means that mails in mail- box(es) below INBOX.* and user.* stay untouched. Use the option -f to also delete mail in mailbox(es) below these folders." What's a "shared folder"? OK, so the format of a Junk mail folder is: user/spiro/Junk(a)knossos.net.nz and I've successfully done: $ ipurge -f -d 90 user/spiro/Junk(a)knossos.net.nz Working on user/spiro/Junk(a)knossos.net.nz... total messages 21 total bytes 187742 Deleted messages 16 Deleted bytes 138324 Remaining messages 5 Remaining bytes 49418 however, without the -f, it did nothing, even though I was explicitly supplying a folder. Clearly I misunderstand what the man page is trying to tell me. I'd like to set up a proper "pattern" to purge all spamboxes correctly via the cyrus.conf, because at the moment, I've got an awk script that generates a list of email addresses and produces a list in the format of user/userid/Junk@domain. I could then go over that list and run an ipurge for each one, but if anything happens that causes that list to be corrupted, I'm afraid of deleting the wrong mail. or worse. :( according to what I've gathered, the line: purgespam cmd="ipurge -f -d 90 user/%/Junk@*" at=0430 should work when put in cyrus.conf's Events section, but I can't confirm these wildcards. Some results on google just refer to * for the mailbox name, but none seem to include the domain as part of the string. Can anyone here shed some light? -- Spiro Harvey Knossos Networks Ltd 021-295-1923 www.knossos.net.nz

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x86_64 CentOS 5.3 Users - Library Issue
by Justin Bull 18 Jun '09

18 Jun '09

Hello, I need to conduct a little research. Anyone who is running CentOS 5.3 x86_64 please run the following: # yum install libxml2-devel # nm /usr/lib64/libxml2.a | grep xmlXPathContextSetCache If my suspicions are correct, if you run cPanel/WHM you will not see any output and if without cPanel/WHM you'll see something similar to this: 00000000000023a0 T xmlXPathContextSetCache Thanks for your time and help. -- Best Regards, Justin Bull http://www.sohipitmhz.com/pubkey.txt (Public Key)

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CentOS security advisories
by Joshua Bahnsen 18 Jun '09

18 Jun '09

I have been looking at the security advisories provided here: http://lists.centos.org/pipermail/centos-announce/ It appears that there is not a 1:1 correlation between advisories listed here and advisories listed by Red Hat: https://rhn.redhat.com/errata Is there a specific reason for this? Also, is there an alternate location to find all Errata information for CentOS? Joshua Bahnsen

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Re: [CentOS] nvidia dual monitor setup centos howto
by Dave 17 Jun '09

17 Jun '09

On Tue, Jun 16, 2009 at 9:18 PM, Sorin Srbu<sorin.srbu(a)orgfarm.uu.se> wrote: >>This is true both for nvidia-x11-drv and dkms-nvidia-x11-drv: the latter >>is simply a newer version with a name change, and it's the one you >>should use (but anyways if you installed the older package yum upgrade >>should offer to upgrade to dkms-*). Yeah, I had asked yum to install nvidia-x11-drv, then later when I explicitly tried to install dkms-nvidia-x11-drv it had already auto-updated and yum reported nothing to do. Maybe not completely idiot-proof, but the score is yum 1 idiots 0 on this court today. Dave

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Re: [CentOS] hostname changes
by Bob Hoffman 17 Jun '09

17 Jun '09

>How do I change the hostname? >In particular, what is the difference between /etc/hosts and >/etc/sysconfig/network files? > Where should I make the changes? change /etc/sysconfig/netowrk and make the hostname=server.domain.com change localhostnames add the new hostname to the file change etc/hosts xx.xx.xx.xx server.domain.com server restart the computer. You need to do this. Yes, you need to restart/reboot it. then run these commands. (assumes your hostname is mail.example.com) if any of these do not jibe, more to do until you get it right. shell prompt> uname -n mail.example.com shell prompt> hostname -s mail shell prompt> hostname -d example.com shell prompt> hostname -f mail.example.com shell prompt> hostname mail.example.com Lastly, you need to redo your certifercates for your computer since they (your openssh and maybe some others) are set up for the previous domain. In actual practice you may seldom see any issues with this, but the error messages will appear for some users trying to access different things.... Also, if you have stuff like logwatch or other system things going to a local mail make sure spamassassin or procmail rules are updated to deal with the change in localhost.localdomain so they are not junked. Always make sure the normal things you are used to are still happening or being received after you change the hostname....many things can be affected, slightly or more, when doing it. Nothing usually server breaking. This should do you well

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Re: [CentOS] OT - Tomcat CLASSPATH issue
by Glenn 17 Jun '09

17 Jun '09

At 09:58 AM 6/16/2009, you wrote: > > Does this answer your question? > > http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html > > > > > >not really no ...... From the same version of Apache-Tomcat (6.0.18) web.xml config file:     You are setting CLASSPATH as an OS environment variable. Tomcat wants/has it's own and you set it within the engine, or let the engine take care of it for you. Cheers, Glenn

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which programming language for server-side admin tasks
by Rudi Ahlers 17 Jun '09

17 Jun '09

Hi, I would like to spend some time learning a new coding language, but specifically for server side admin stuff, i.e. setting up users / databases / FTP accounts / virtual domains on Apache, etc. I already know PHP, but realize it's not quite suited for this kind of admin, and I suppose I need to look @ PERL / Python / C++ / Ruby? / others? Can someone give me some pointers on this? I basically need to write a control panel, with web access for admins to manage servers, similar to what cPanel / WebMin / Plesk / etc does right now, but something more customized for our needs. -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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CentOS-announce Digest, Vol 52, Issue 9
by centos-announce-request＠centos.org 17 Jun '09

17 Jun '09

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-2009:1108 Moderate CentOS 3 i386 httpd - security update (Tru Huynh) 2. CESA-2009:1108 Moderate CentOS 3 x86_64 httpd - security update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Wed, 17 Jun 2009 16:02:38 +0200 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2009:1108 Moderate CentOS 3 i386 httpd - security update To: centos-announce(a)centos.org Message-ID: <20090617140238.GB19653(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2009:1108 httpd security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2009-1108.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/httpd-2.0.46-73.ent.centos.i386.rpm updates/i386/RPMS/httpd-devel-2.0.46-73.ent.centos.i386.rpm updates/i386/RPMS/mod_ssl-2.0.46-73.ent.centos.i386.rpm source: updates/SRPMS/httpd-2.0.46-73.ent.centos.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update httpd 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 June 2009