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Upgrade then sudden death..
by Ben Mills 02 Nov '08

02 Nov '08

I recently put Cent 5.2 (64 bit) on a new server using a Supermicro pdsbm-ln2+ sys board. I did the original installation at home using the 5.2 dvd I got via torrent. I turned it over to my NOC tech and it went right online so he ran yum update. With the most recent kernel, which went in with the update, the server hung on grub (after reboot). He did a fresh (minimal) Centos installation and once again ran update, but again the new kernel wouldn't load. The machine is set up RAID 1 with two Seagate 250 GB sata drives. Nothing fancy, just cheapo 7200 rpm stuff. I wish I could be more specific, but I wasn't present during the update and failure. None the less, I would appreciate all the opinions and feedback you folks can offer. I'll have the server back here in a couple of days. In the meanwhile, I'd like to get some ideas that could help me resolve this issue. I put the system board manual on my server at: http://hwy39.net/centos/Supermicro_PDSBM-LN1-LN2-LN2+_Manual.pdf . Feel free to take a look at it. -- Thanks, Ben hwy39.net lonsingerpharmacy.com

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Question re RHEL 5.3
by MHR 02 Nov '08

02 Nov '08

I've heard now from more than one source about problems with CentOS (and RH) at least up through 5.2 w.r.t. SATA drive handling, and I've even reported on this myself in this list before. My question is, do we have any idea if 5.3 has any improvements in this area? One of my cohorts here, who happens to be a Fedora fan, says that these problems are fixed in F9, but I have grave concerns about putting an enterprise lifeline main application on any Fedora release. If 5.3 solves these issues, I'd much rather go with that. Any ideas? Any places I might look to see for myself? Thanks. mhr

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LDAP and expired passwords
by Steve Thompson 01 Nov '08

01 Nov '08

CentOS 5.2 with OpenLDAP 2.3.27, nss_ldap_253.13, using TLS, i686 and x86_64. If a user with an expired password (shadowLastChange + shadowMax < current day) logs in to a system where ldap.conf points first to a consumer-only LDAP server, the password change operation (exop) proceeds and fails with: LDAP password information update failed: Referral If I comment out "ssl start_tls", the referral to the master is followed and the password change operation succeeds. I've found references to problems with earlier releases of pam_ldap when referrals were not properly followed when using TLS, and these are supposed to be fixed; apparently not in my case. Can anyone hit me with the clue stick? Steve ---------------------------------------------------------------------------- Steve Thompson E-mail: smt AT vgersoft DOT com Voyager Software LLC Web: http://www DOT vgersoft DOT com 39 Smugglers Path VSW Support: support AT vgersoft DOT com Ithaca, NY 14850 "186,300 miles per second: it's not just a good idea, it's the law" ----------------------------------------------------------------------------

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The relationship between udev and MAKEDEV
by Clint Dilks 01 Nov '08

01 Nov '08

Hi People, Recently an issue where I was trying to changed the group and permission associated with the device /dev/net/tun. As I knew devices were controlled by udev I went looking at its configuration and found this rule 50-udev.rules:KERNEL=="tun", NAME="net/%k". Some research on the web suggested that modifying the default rules was a bad idea and that you should in fact override them with your own custom rules. So I tried setting up a custom rule, this failed. I then tried modifying the default rule this also failed. A helpful response from here pointed me to MAKEDEV and I was able to change /etc/makedev.d/01linux-2.6.x to do what I wanted. But this has raised a couple of questions for me. 1. If udev doesn't directly control the creation of this device why is there a udev rule for it? 2. Is modifying /etc/makedev.d/01linux-2.6.x likely to cause me issues in future ? My investigation to date has led to me to believe that devices listed in /etc/udev/makedev.d/ are the devices that you always want to be present on a system rather than relying on something about your systems Hardware configuration to lead to a device being created. Is this correct ? Thank you for any thoughts / information you can share relating to this.

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swap being used?
by Mag Gam 01 Nov '08

01 Nov '08

I have a machine with 64GB of memory in our lab. We have memory demanding processes and natually swap gets used. However when these processes are gone and the system is idle, we still see swap being used. Is this normal behavior? TIA

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Re: [CentOS] offtopic question .. apprecyice ur help
by David G. Miller 01 Nov '08

01 Nov '08

"fabian dacunha" <fabian(a)baladia.gov.kw> wrote with horrible intentional misspellings: > Dear All, > > its a offtopic question but really apprecite if someone would advise n help > i have been running a mil server with sendmail > > and have sbl-xbl.spamhaus.org as my dnsbl. > > i had other servers which are alredy out now > that is relays.ordb.org and dsbl.org have already been out of my sendmail > config. > > any one knows of ny other servers i could add in my sendmail config > > apprecite ur help > > thanks > > > regards > > Fabian I have two blog posts that describe how I deal with spam: http://davenjudy.org/davesBlog/node/22 http://davenjudy.org/davesBlog/node/27 I use a combination of several RBLs and dSPAM that seems to work fairly well and I'm not hearing about any false positives. Cheers, Dave -- Politics, n. Strife of interests masquerading as a contest of principles. -- Ambrose Bierce

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CentOS-announce Digest, Vol 45, Issue 1
by centos-announce-request＠centos.org 01 Nov '08

01 Nov '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-2008:0965 Important CentOS 3 ia64 lynx - security update (Pasi Pirhonen) 2. CESA-2008:0965 Important CentOS 4 ia64 lynx - security update (Pasi Pirhonen) 3. CESA-2008:0965 Important CentOS 3 s390(x) lynx - security update (Pasi Pirhonen) 4. CESA-2008:0965 Important CentOS 4 s390(x) lynx - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Fri, 31 Oct 2008 19:09:58 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2008:0965 Important CentOS 3 ia64 lynx - security update To: centos-announce(a)centos.org Message-ID: <20081031170958.GS5793(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2008:0865 https://rhn.redhat.com/errata/RHSA-2008-0965.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/lynx-2.8.5-11.3.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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Picasa vs. native photo management apps
by Niki Kovacs 01 Nov '08

01 Nov '08

Hi, I'm running a small business (http://www.microlinux.fr) offering various services around GNU/Linux, among which migrating folks from Windows to Linux. On server and desktops, I'm using CentOS exclusively. I know, Fedora would be more suitable, but I like the solidity of CentOS, and I can always build the odd missing bits myself from Fedora SRPMS. My heavily customized CentOS-based desktop is very solid and production-proof (in use in all the public libraries around here). One request that I got more often lately is Google Picasa. I vaguely remember having downloaded and installed it once. As far as I know, it's a closed-source Windows app that comes with a WINE emulation layer. Not exactly the open source spirit. As far as I'm concerned, I manage all my photos with some very basic tools: GThumb, Nautilus, GIMP, and that's it. Are there some tasks one performs with Picasa that one can't perform with these native programs? Or is there some other well-made photo management software that you can recommend as a replacement for Picasa? Cheers, Niki Kovacs

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offtopic question .. apprecyice ur help
by fabian dacunha 31 Oct '08

31 Oct '08

Dear All, its a offtopic question but really apprecite if someone would advise n help i have been running a mil server with sendmail and have sbl-xbl.spamhaus.org as my dnsbl. i had other servers which are alredy out now that is relays.ordb.org and dsbl.org have already been out of my sendmail config. any one knows of ny other servers i could add in my sendmail config apprecite ur help thanks regards Fabian -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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OT: SA/Apache "Best Practice"?
by Camron W. Fox 31 Oct '08

31 Oct '08

Alle, Here is our situation: Our customer leases their machines from us and contract us to to manage them (as far as all systems administration issues). The customer does not have root access to any machine (by their own choice, as they want us to be responsible if something goes awry). In the case of their web servers, we handle all configuration, they manage the content. We make changes to the configuration as necessary to support their content. There is one machine (RHEL5.2) that they are developing on that will become a production box. They have sudo access to manage mysql functions as well as the apache server. They have asked, that we change the default directory permission/ownership of /var/www/html,cgi-bin, instead of using the Documentroot and ScriptAlias parameters in the apache configuration. drwxr-xr-x 2 root root 4096 Jan 11 2008 /var/www/cgi-bin drwxr-xr-x 2 root root 4096 Jan 11 2008 /var/www/html to drwxrwxr-x 2 root user 4096 Jan 11 2008 /var/www/cgi-bin drwxrwxr-x 2 root user 4096 Jan 11 2008 /var/www/html We have explained that it is preferable *not* to modify the default filesystem configuration of the underlying OS and have recommended that they customize the app by specifying a location of their choice in httpd.conf. They argue that they "just want to use the system default location". There is no *technical* reason for this, according to them. The location does not affect the app. None of the other web servers we manage for them use the RHEL apache default, they all have customized locations for content and scripts. My question is: What argument, if any, would you use to try and convince the customer that this is a bad idea/bad practice? Best Regards, Camron -- Camron W. Fox Hilo Office High Performance Computing Group Fujitsu Management Services of America, Inc. E-mail: cwfox(a)us.fujitsu.com Phone: (808) 934-4102 Cell: (808) 937-5026

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