Discuss December 2008

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247 participants
257 discussions

init script question
by Davide Cittaro 13 Dec '08

13 Dec '08

Hi all, is there a function (or variable) I can use in a custom init script that identifies the init script name? i.e. I'm porting some init scripts from gentoo, where the $SVCNAME variable identifies the init script name within the script itself... d /* Davide Cittaro Cogentech - Consortium for Genomic Technologies via adamello, 16 20139 Milano Italy tel.: +39(02)574303007 e-mail: davide.cittaro(a)ifom-ieo-campus.it */

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Upgrade to new drives in raid, larger
by Bob Hoffman 13 Dec '08

13 Dec '08

Hi all, As part of my raid experience, I have yet to have to do this, but was wondering how you guys would attempt it. I have 3 drives in a raid 1, with one as a hot spare. They are 250gb with all space used by two raid devices, 1 with boot, the other with LVMs filling them up. Now, lets say down the road I want to put in 500gb drives and replace them....yikes. I was thinking of taking out the spare and replacing it first. Then cloning the raid 1 array drive as I normally would. This would leave 250 gb open. Then I was thinking to make it a spare and then pulling out drive 2 so drive 3, the 500gb, starts syncing. And replacing drive 2 as I did drive 3 above. When drive 3 is done syncing then I can pull out drive 1 and allow drive 2 to sync while drive 1 is turned into a hot spare. Now, supposing this will work, can the raid device be enlarged easily so the LVMs can be increased as needed (make the second raid fill up the drive as it does now)? Or is there a simpler or harder way to do this without waiting forever for the syncing. I am thinking by the time I need to replace them, centos6 will be out and I will just have to redo the whole computer anyway, but I have not seen anyone talk about this, thought I would see what you gurus would do. Bob

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Experimental RPM Squid Packages for EL4/EL5
by Vandaman 13 Dec '08

13 Dec '08

I posted on the squid-users mailing list and also CC'd the upstream developer in case he wasn't subscribed. He replied and updated his page on http://people.redhat.com/mnagy/squid/ You can follow the full conversation at http://marc.info/?t=122908476200005&r=1&w=2 Are there any plans for any other squid versions in CentOS plus? Any other repos/sources you know of with EL4/EL5 squid rpms? Is there a CentOS dev with any experimental packages? Regards, Vandaman.

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OT: Need some riser card advice...
by Ray Van Dolson 13 Dec '08

13 Dec '08

Fellow server-builders out there, this is for you. :) I was trying to build a cheap JBOD type storage solution running CentOS. Ended up snagging a Supermicro SC826TQ-R800LPB 2U case (12 drives slots) and a Supermicro X7DBE-O motherboard. Unfortunately, without thinking I snagged a 3ware 9650SE-12ML SATA RAID card which is a full height card and thus does not fit in my case. I have a few options here: - Go with a 3U case instead. Now I have a 16-drive case with only a 12-way card. :-) - Return the 3Ware and order two of the 8-way cards which are half-height. This means I love some of my space now however as I have to have an extra spare drive per card. - Get a PCI-E riser. The riser option I like, except I also have the BBU unit for my RAID card meaning I need to ensure that I have enough clearance and support for it when the card is mounted horizontally. You can mount the battery elsewhere, but not the logic module... Most of the PCI-E 8x risers I've seen out there seem to be pretty small profile and I'm not sure if they'd give the clearance needed (see the Supermicro provided CSE-RR1U-E8). It looks like I need around 35mm of clearance to get the card in sideways with the BBU attached... Another solid option would looke to be a 2U riser, but I am having a harder time finding somethign reasonably priced. The RSC-R2UE-A3E8 from Supermicro looks perfect and would definitely give me the clearance I need, but is priced 10x higher than the 1U riser! Any advice? Apologies for the off-topic post.. this *will* be running CentOS however and there doesn't seem to be a more appropriate mailing list for general stuff like this.. :-) TIA, Ray

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No /etc/yum/repos.d after new install of 5.2
by MHR 12 Dec '08

12 Dec '08

Since I was in the unenviable position of completely reinstalling my system today, I started out from the 5.2 Final DVD and then ran yum update to get the 79 (?) packages (and another 14 after that). I noticed something I found rather odd. There is no /etc/yum/repos.d directory at all. Is this right? Doesn't seem so. Makes it hard to set specific options for various repositories. Can someone explain that one? Thanks. mhr

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Yum errors trying to install yum-priorities
by MHR 12 Dec '08

12 Dec '08

What does this mean (CentOS 5.2, all the latest updates, for which yum worked just fine): yum install yum-priorities Password: Loading "fastestmirror" plugin Loading mirror speeds from cached hostfile * rpmforge: ftp-stud.fht-esslingen.de * base: mirror.sanctuaryhost.com * updates: mirrors.easynews.com * addons: linux.mirrors.es.net * extras: mirror.dhsrv.com Setting up Install Process Parsing package install arguments Resolving Dependencies --> Running transaction check ---> Package yum-priorities.noarch 0:1.1.10-9.el5.centos set to be updated --> Finished Dependency Resolution Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: yum-priorities noarch 1.1.10-9.el5.centos base 11 k Transaction Summary ============================================================================= Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 11 k Is this ok [y/N]: y Downloading Packages: (1/1): yum-priorities-1.1 100% |=========================| 2.6 kB 00:00 http://mirror.sanctuaryhost.com/centos/5.2/os/i386/CentOS/yum-priorities-1.…: [Errno -1] Package does not match intended download Trying other mirror. (1/1): yum-priorities-1.1 100% |=========================| 11 kB 00:00 http://updates.interworx.info/centos/5.2/os/i386/CentOS/yum-priorities-1.1.…: [Errno -1] Package does not match intended download Trying other mirror. http://holmes.umflint.edu/centos/5.2/os/i386/CentOS/yum-priorities-1.1.10-9…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. http://mirrors.combinetworks.com/centos/5.2/os/i386/CentOS/yum-priorities-1…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. http://mirror.atlanticmetro.net/centos/5.2/os/i386/CentOS/yum-priorities-1.…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. (1/1): yum-priorities-1.1 100% |=========================| 11 kB 00:00 ftp://mirror.atlantic.net/pub/centos/5.2/os/i386/CentOS/yum-priorities-1.1.…: [Errno -1] Package does not match intended download Trying other mirror. http://mirrors.serveraxis.net/centos/5.2/os/i386/CentOS/yum-priorities-1.1.…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. http://mirrors.liquidweb.com/CentOS/5.2/os/i386/CentOS/yum-priorities-1.1.1…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. http://centos.mirrors.tds.net/pub/linux/centos/5.2/os/i386/CentOS/yum-prior…: [Errno 9] Requested Range Not Satisfiable Trying other mirror. (1/1): yum-priorities-1.1 100% |=========================| 11 kB 00:00 ftp://ftp.ussg.iu.edu/linux/centos/5.2/os/i386/CentOS/yum-priorities-1.1.10…: [Errno -1] Package does not match intended download Trying other mirror. Error Downloading Packages: yum-priorities - 1.1.10-9.el5.centos.noarch: failure: CentOS/yum-priorities-1.1.10-9.el5.centos.noarch.rpm from base: [Errno 256] No more mirrors to try. Thanks. mhr

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URGENT: libdvdcss install hosed /var [SOLVED]
by MHR 12 Dec '08

12 Dec '08

I found it - there has to be a /var/lib/nfs directory with a few subdirectories under it. Once I had created them all, I could run rpc.statd, and that unfroze everything. Thanks to all, esp. Bill for mentioning rpc - that was the clue for me. mhr

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Information about ASLR (Address Space Layout Randomization) in CentOS 5
by Filipe Brandenburger 12 Dec '08

12 Dec '08

Hi, We are porting some applications from CentOS 4 to CentOS 5, the applications use mmap, and we found out that they sometimes crash in CentOS 5. We found out that this is due to the fact that CentOS 5 does randomization of the address space when loading binaries, libraries, and when using mmap, so that is what's causing our problem. The thing is, I'm trying to google for it, but I did not find any useful information on ASLR present in CentOS 5/RHEL 5/Linux 2.6.18. If anyone has any good pointers on reliable information on what does that code do, how to configure/tweak it, or how to use mmap properly to work around the issues, I would really appreciate it. In particular, if there is a switch/option that would allow us to disable it for some binaries/libraries only, it would be great, since this could allow us to do the upgrade sooner and try to find the proper fix for the problem later. Thanks! Filipe

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Centos directory server
by Per Qvindesland 12 Dec '08

12 Dec '08

Hello List, I really hope that someone could shed some light here on where I am going rong, I have setup 2 directory servers one so that I can replicate from one to the other I have followed the manual to the letter (i think, well I have read and re-read it so many times now) from this place http://www.redhat.com/docs/manuals/dir-server/ag/8.0/Managing_Replication-C… but I still get errors, in the log on the supplier server it says the following NSMMReplicationPlugin - agmt="cn=sms.viasat.se" (ldap2:389): Replication bind to cn=Replication Manager on consumer failed: 32 () but I am not sure what I have done rong, has anyone got any idea of what I am doing rong? Kind regards Per Qvindesland

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yum-updatesd or similar for CentOS 4
by Alexander Farber 12 Dec '08

12 Dec '08

Hello, we have enabled yum-updatesd on our dozen real and virtual machines running CentOS 5.2 some time ago and are very satisfied: afarber@ablsw01:~> grep -v ^# /etc/yum/yum-updatesd.conf [main] run_interval = 7200 updaterefresh = 1200 emit_via = email dbus_listener = no do_update = yes do_download = yes do_download_deps = yes (it would be good to make it use the proxy though...) My plan is to keep the update mails and if anything goes wrong, install the older packages. But until now I never needed to do that :-) However we have few machines running CentOS 4.7 which we can't upgrade to 5 (because of Oracle 9 etc.) Is there some similar service available? Or has anybody experience in putting "yum -y update" into crontab for CentOS 4? Any good advices? Thank you Alex

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Discuss December 2008