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any significant differences between centos and OEL?
by Robert P. J. Day 26 Jan '10

26 Jan '10

someone just pointed out to me that there is a distro called "oracle enterprise linux" which is effectively a re-branded RHEL, so i'm curious -- has anyone here used both centos and OEL and would there be any differences that would be worth caring about? the only thing i can think of that might be worthwhile is that OEL might change some of the default kernel parms thru /etc/sysctl.conf that make that distro more appropriate for running large oracle databases. beyond that, i have no idea. thoughts? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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Re: [CentOS] [Samba] User permissions, simple doc ?
by Eero Volotinen 26 Jan '10

26 Jan '10

2010/1/26 mistofeles <ptmusta(a)utu.fi>: > > Is there some simple documentation about how to set the user permissons in a > Samba server ? > > In my server I have the permissions like this: > drwxrwx--- 3 mydemo domain users 4096 2009-12-29 08:19 mydemo > Now the other users can not read nor write to this directory. > > If I copy this directory anywhere, anybody can read and write there. (I have > my reasons to make a copy) > Is there any way to make these directories PRIVATE to the owner only ? > I have tried chmod and chown with various values . > > In smb.conf I have: > [%U] > comment = Own home dir > path = /home/%U > writeable = yes > valid users = %U > [BCK] > comment = Here I copy the home dirs > path = /BACKUP/backup > browseable = yes > read only = yes Use acl on filesystem, see examples at: http://www.vanemery.com/Linux/ACL/linux-acl.html -- Eero, RHCE

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Re: [CentOS] Yum update failure (was a digest reference)
by MHR 26 Jan '10

26 Jan '10

On Mon, Jan 18, 2010 at 1:53 PM, Tobias Weisserth <tobias.weisserth(a)gmail.com> wrote: > Hi everybody, > I'm having difficulties updating dhclient as outlined below by using either > yum or rpm. I'm running CentOS on a virtual guest provided by a provider. Have you tried a 'yum clean all' ? That usually resolves this sort of issue for me. mhr

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movie software
by adrian kok 26 Jan '10

26 Jan '10

Hi Any open source software can open quick time? and can covert from quick to other movie also? Thank you Send instant messages to your online friends http://uk.messenger.yahoo.com

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Firewire issues with CentOS/RH?
by MHR 26 Jan '10

26 Jan '10

I read in another forum that CentOS has problems with Firewire drives, something along the lines of whenever a new kernel is booted, the drives are gone. Can anyone elaborate on that? I don't use Firewire drives (at all, yet), but information about this would be nice to have.... Thanks. mhr

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[Fwd: Re: The directory that I am trying to clean up is huge]
by James B. Byrne 26 Jan '10

26 Jan '10

On Sat, January 23, 2010 20:21, Robert Nichols wrote: > Robert Heller wrote: > > Gosh, then I guess the manpage for 'find' must be totally wrong > where it > says: > > -exec command ; > ... > The specified command is run once for each matched > file. > Not wrong, just not very explicit regarding process. The man page does not say that find acts upon each file as it is found, only that it acts upon each file that is found. Neither does the man page speak to the limits of the kernel configuration (MAX_ARG_PAGES) implicitly used by cp, find, ls, etc. The problem you have is that the selection of all qualified files is completed before any are acted on by find. So, in your case of an overlarge collection, the page limit is exceeded before any are deleted. Taking each file as it is found and piping it to an external rm command explicitly defines the process as find, delete and find again, and thereby avoids hitting the page limit. CentOS-5.3 was supposed to address this issue: > Previously, the MAX_ARG_PAGES limit that is set in the kernel > was too low, and may have resulted in the following error: > > execve: Argument list too long > > In this update, this limit has been increased to 25 percent of > the stack size, which resolves this issue. So, perhaps if you update to 5.3+ the problem might go away? Although, in my opinion, piping find results through xargs is far more reliable and portable. Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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OT: reliable secondary dns provider
by Eero Volotinen 25 Jan '10

25 Jan '10

Sorry about a bit offtopic, but I am looking reliable (not free) secondary dns provider. -- Eero

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Re: [CentOS] DNS issue.. help ?!
by fabien faye 25 Jan '10

25 Jan '10

Hi, If you are working on real TLD, you have to change you dns server on the dns provider side. If you made a whois of your domain name : Example : http://generationip.com/whois?Whois=generationip.com Whois Server Version 2.0 Domain names in the .com and .net domains can now be registered with many different competing registrars. Go to http://www.internic.net for detailed information. Domain Name: GENERATIONIP.COM Registrar: EURODNS S.A Whois Server: whois.eurodns.com Referral URL: http://www.eurodns.com Name Server: NS1.EURODNS.COM Name Server: NS2.EURODNS.COM Status: clientTransferProhibited Updated Date: 05-mar-2009 Creation Date: 17-mar-2005 Expiration Date: 17-mar-2011 The named server define in this case is : Name Server: NS1.EURODNS.COM Name Server: NS2.EURODNS.COM those name server are declared at AUTHORITY server's, if you must define new dns server, you have to change the named server of this zone to your new authority server. Best regards Fabien FAYE RHCE www.generationip.com Free network tools & HOWTO for centos and Redhat ----- Original Message ----- From: "Roland Roland" <R_O_L_A_N_D(a)hotmail.com> To: "CentOS mailing list" <centos(a)centos.org> Sent: Monday, January 25, 2010 3:35:26 PM Subject: [CentOS] DNS issue.. help ?! Hi All, i have DNS configured on my centos 5.2 server. it's all working fine, right now i want to change the main public dns from one IP to another to do some testing (the new public dns ip has records which the old one doesnt have and it's done as such for testing) so i got into /etc/resolv.conf and changed the first nameserver to the NEW public DNS. /etc/init.d/network restart /etc/init.d/named restart when i issue an nslookup example.com ON the dns server, i get the exact IP i want to do testing on. but when i do nslookup example.com on the clients machine. the website resolves to another IP ( the one set in the initial public dns records) is there any other changes i need to do for the DNS server redirects its requests to the new public dns ? _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Automatically check into SVN?
by Mr Gabriel 25 Jan '10

25 Jan '10

I would like to automatically check in a directory to SVN, to maintain the changes that area made to those txt files over time. These files are configuration files, and it would be good to be able to revert back by simply checking out the older versions. But I would to check in the files every files minutes, and I'm sure SVN will not use up any disc space, unless there are any changes. I already have an svn server up and running in production -- Any help?

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Re: [CentOS] Too much cpu wait on nfs server when we need to read data on it
by fabien faye 25 Jan '10

25 Jan '10

Hi, You can find below the spec of my server: cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 37 model name : AMD Opteron(tm) Processor 248 stepping : 1 cpu MHz : 2200.034 cache size : 1024 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm bogomips : 4400.06 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 37 model name : AMD Opteron(tm) Processor 248 stepping : 1 cpu MHz : 2200.034 cache size : 1024 KB fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm bogomips : 4399.42 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp free total used free shared buffers cached Mem: 2059236 2049896 9340 0 9800 1874828 -/+ buffers/cache: 165268 1893968 Swap: 4095992 112 4095880 Linux 1-NFS.domain.com 2.6.18-164.9.1.el5 #1 SMP Tue Dec 15 20:57:57 EST 2009 x86_64 x86_64 x86_64 GNU/Linux --- Physical volume --- PV Name /dev/sdc1 VG Name vgspace PV Size 4.55 TB / not usable 1.97 MB Allocatable yes PE Size (KByte) 4096 Total PE 1192067 Free PE 795267 Allocated PE 396800 --- Physical volume --- PV Name /dev/sdd1 VG Name vgspace PV Size 4.55 TB / not usable 1.97 MB Allocatable yes PE Size (KByte) 4096 Total PE 1192067 Free PE 808067 Allocated PE 384000 I need ext4 for file bigger than 2TB. /dev/mapper/vgspace-vol1 on /vol/vol1 type ext4 (rw,noatime) /dev/mapper/vgspace-vol2 on /vol/vol2 type ext4 (rw,noatime) # tune2fs -l /dev/mapper/vgspace-vol1 tune2fs 1.39 (29-May-2006) tune2fs: Filesystem has unsupported feature(s) while trying to open /dev/mapper/vgspace-vol1 Couldn't find valid filesystem superblock. # tune2fs -l /dev/mapper/vgspace-vol2 tune2fs 1.39 (29-May-2006) tune2fs: Filesystem has unsupported feature(s) while trying to open /dev/mapper/vgspace-vol2 Couldn't find valid filesystem superblock. export nfs : /vol/vol1 192.168.*.0/255.255.255.0(async,no_subtree_check,rw,no_root_squash) /vol/vol2 192.168.*.0/255.255.255.0(async,no_subtree_check,rw,no_root_squash) Best regards Fabien FAYE ----- Original Message ----- From: "Jim Perrin" <jperrin(a)gmail.com> To: "CentOS mailing list" <centos(a)centos.org> Sent: Monday, January 25, 2010 2:27:41 PM Subject: Re: [CentOS] Too much cpu wait on nfs server when we need to read data on it On Mon, Jan 25, 2010 at 8:39 AM, fabien faye <fabien(a)faye.eu> wrote: > Hi, > > I have a big server with 24 Disk on 2 3ware card. Define 'big'. You're not giving much in terms of memory or cpu specs. > When i write data on my nfs server everything is fine but when i want to read data i have a lot of cpu wait. Okay. Have you looked at any performance tuning or elevator/scheduler adjustments? File system tuning? What have you tried on your own so far to debug this? > about the file system, i use ext4 on LVM partition. Why? Is there a performance reason for you to use ext4 vs ext3? > Do you have any idea about that. Not based on the little information you've provided. It would help for you to supply more detail, and the things you've already looked at. -- During times of universal deceit, telling the truth becomes a revolutionary act. George Orwell _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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