Discuss

discuss@lists.centos.org

34758 discussions

problem with CUPS
by Rajeev R Veedu 25 Jan '07

25 Jan '07

I have made a CUPS print server and unable to load printer driver nor able to install the printer on the windows machine. The error I am getting is as below: - "Windows can not locate suitable printer driver. Contact your administratorxxxxx" I can print test page from the cups panel and the printer works fine. I tried to upload the driver through windows machine by right clicking the properties saying no and clicking advance property tab, the new driver tab is not highlighted. Is it anything related to permission problem? I am using Centos 4.3 + samba 3.0.22. Please find below my SMB.conf file and would really appreciate if some one could tell me where I am going wrong! Thanks Rajeev [Global] load printers = yes passwd chat debug = Yes idmap gid = 10000-20000 admin users = root host msdfs = Yes wins server = 192.168.1.223 null passwords = Yes domain master = No winbind use default domain = Yes public = yes passwd program = /etc/passwd %u template shell = /bin/bash lock directory = /tmp/samba dns proxy = No netbios name = PrintSrv printing = cups writeable = yes server string = Print Server printing = cups writeable = yes server string = Print Server idmap uid = 10000-20000 password server = 192.168.1.225 winbind nested groups = Yes unix password sync = Yes local master = No workgroup = DOMAIN os level = 0 update encrypted = Yes printcap name = cups security = DOMAIN preferred master = No winbind separator = / winbind cache time = 10 [Data-01] comment = Data-01 path = /Data create mask = 0777 directory mask = 0777 guest ok = Yes [Home] comment = Home Directories valid users = %S public = no writable = yes printable = no create mask = 0640 directory mask = 0755 browsable = no [printers] comment = All Printers browseable = yes printable = yes writeable = yes path = /var/tmp guest ok = yes print command = lpr -r -P'%p' -J'%j' -U'%U' %s [print$] comment = Printer Drivers path = /var/lib/samba/drivers/ create mask = 0664 directory mask = 0775 guest ok = yes write list = rvrajeev

1 1

nscd crashes
by Josh Kelley 25 Jan '07

25 Jan '07

I've had problems with nscd crashing every few days on my CentOS 4 mail server for a while now. The problems started maybe around CentOS 4.2, although I don't remember for sure. My debugging efforts let me to disable nscd's persistent cache, and that seemed to work for a while, but since upgrading to CentOS 4.4, the crashes have started again. When nscd crashes, the rest of the system becomes unreliable. Dovecot hangs when new users attempt to log in (fixed or worked around by switching Dovecot versions), and MIMEDefang (which we use for mail filtering) starts failing when it tries to process mail. A bit more information about our configuration: We use nss_ldap and pam_ldap against a failover pair of Fedora Directory Servers. nscd is also crashing on another of our servers (a fileserver) but with less regularlity; on our other servers, it works fine, even without disabling the persistent cache. Has anyone seen similar problems with nscd? Any tips for debugging it? I can use gdb, strace, etc. if I have to, but that can be time consuming, and it's hard to take the time to do that when people are yelling about the mail server being down. (Does CentOS provide debuginfo RPMs?) Thanks. Josh Kelley

6 6

qt3-devel packages
by Devraj Mukherjee 25 Jan '07

25 Jan '07

Hi Everyone, I am trying to build rpms for a product called Rivendell for CentOS 4.4 (http://www.salemradiolabs.com/rivendell/) One of the packages requires a package called qt3 and qt3-devel All searches reveal this package to be available for SuSE. Any ideas if this is available for CentOS/EL4? Or a src.rpm that I can use? Thanks for your time. [root@foreground ~]# rpm -ivh /usr/src/redhat/RPMS/i386/libradio-*rpm error: Failed dependencies: qt3 is needed by libradio-0.97.4-1.i386 qt3-devel is needed by libradio-devel-0.97.4-1.i386 [root@foreground ~]# -- "I never look back darling, it distracts from the now", Edna Mode (The Incredibles)

2 2

RE: [CentOS] OOT: Advice on failover rsync setup
by Mark Schoonover 25 Jan '07

25 Jan '07

John Summerfield wrote: > Mark Schoonover wrote: >> Benjamin Smith wrote: >>> On Wednesday 17 January 2007 04:41, Karanbir Singh wrote: >>>> Fajar Priyanto wrote: >>>>> I have a task on setting up a cluster of 2 servers for providing >>>>> ftp service. We use RH's Cluster suite. However the cluster setup >>>>> is lack of shared network storage, so the /var/ftp/pub is mounted >>>>> on each server. The cluster is set >>>>> >>>>> So, are we on the right direction? Or is there any better way? >>>>> Thank you very much, >>>>> >>>> have you considered using drbd ? >>> Well, I was going to suggest using RAID1 with one of the partitions >>> being a network block device, but this looks even better! >>> >>> Rsync is great for period backups (not more than once per day or so) >> >> I run rsync every hour on multi-terrabyte systems with no problems. >> The NASes do have a private GB network to push the data through, so >> the user network doesn't see the network traffic generated by rsync. >> I can have anywhere from just a couple hundred megs, to 100 gigs of >> data change inside of an hour. > > OTOH I found running rsync daily over the Internet to backup a Linux > box impractical; it used heaps of RAM (and swap) and ran for hours. > Fortunately, its excessive use of swap (several times real RAM) didn't > lead to thrashing. > This seems rather odd performance for rsync. As I type this, I'm sending 800GB to a new server, and rsync is using 28MB of RAM. I don't think network speed is an issue with how much RAM/SWAP is getting used by rsync. Could you post your rsync command, I'm curious to what your running. What version of rsync are you using?? > Now, I run a hand-crafted script that makes a compressed ISO > (mkzftree) and I rsync that. I'm maintaining a backup filesystem of > about 8 Mbytes remotely now; the rsync runs for a little over two > hours daily. That's what I love about *NIX, more than one way to skin a cat! Thanks! Mark Schoonover IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816 * software development * systems administration * networking * security *

3 2

RE: [CentOS] rsync and users
by Mark Schoonover 25 Jan '07

25 Jan '07

Todd Cary wrote: > Thanks to the encouragement of some people on this list, I am using > rsync to synchronize two servers: one is a backup to the other in case > the primary one fails. By hand, I inserted the names of the users on > the primary server into the backup server. So, now all works well. > > /usr/bin/rsync -av -e ssh /home/ 192.168.0.22:/home/ > > My question is what would happen if the users were not on the backup They just get set to the UID/GID of the source server. > server? > > Is there anyway to have the users automatically inserted into passwd > and group? I'd investigate NIS to fix this issue. Thanks! Mark Schoonover IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816

3 2

RE: [CentOS] rsync doesn't update directory ownership
by Mark Schoonover 25 Jan '07

25 Jan '07

Fajar Priyanto wrote: >On Wednesday 24 January 2007 00:27, Mark Schoonover wrote: >> Fajar, >> >> Your rsync command contains extraneous options. The -a actually is a >> shortcut for -rlptogoD, so all you really need is -avz as options. If you >> could provide an ls -la of the source and remote directories, that would >> help tremendously. One thing that comes to mind is to be sure that >> userA.userA has the same UID & GID on both servers. In my case, where I'm >> rsyncing to a remote server and the UID/GID don't match, you'll just get >> numeric IDs as owners and groups on the remote side. So, try eliminating >> the duplicate options first, be sure UID/GID are the same on both servers. >> Let us know how it goes. >> >> HTH > >Hello Mark, >Thank you very much for the correction. I will try it as soon as I get back to >office in a few hours. >In the mean time, I want to confirm that: >- yes, the users has the same uid/gid on both servers Fajar, What version of rsync are you using on each machine?? Thanks! Mark Schoonover IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816

4 3

RE: [CentOS] How do I identify my hardware?
by Mark Hull-Richter 25 Jan '07

25 Jan '07

So if it's not there, does that mean the device is not supported on Linux? Yoik. Neither of the video ids is in the list.... My audio id is there - it is the integrated mobo audio, but it failed initialization - does it need something to be plugged into it to work? Thanks again. -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Paul Heinlein Sent: Wednesday, January 24, 2007 1:54 PM To: CentOS mailing list Subject: Re: [CentOS] How do I identify my hardware? On Wed, 24 Jan 2007, Mark Hull-Richter wrote: > I have two issues with my machine - sound and video. My sound card > is not recognized at all (I think it's on the mobo, but I'm not sure > how to identify it), and I have an ATI dual video card with two > screens, but both show the same output, so I'm guessing that my > CentOS does not know what it is, either (they show up as > unidentified in the config file). What I do is # get plain-language pci listing lspci # get numeric only pci listing lspci -n Match the plain listing with the numeric listing to get the raw PCI ID of the device in question, e.g., # plain language 01:0c.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02) # numeric 01:0c.0 0200: 8086:100e (rev 02) Then head to the Linux PCI ID repo and search for the specific ID ($3 to awk :-), in this case, "8086:100e": http://pci-ids.ucw.cz/ In this case, 8086 is an Intel vendor ID and 100e specifies a '82540EM Gigabit Ethernet Controller' device. -- Paul Heinlein <> heinlein(a)madboa.com <> www.madboa.com _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

2 1

How do I identify my hardware?
by Mark Hull-Richter 24 Jan '07

24 Jan '07

I'm a little new to CentOS and very rusty on Linux in general (it's been 7 years since I worked on a Linux kernel), so this may seem like a dumb question. I have two issues with my machine - sound and video. My sound card is not recognized at all (I think it's on the mobo, but I'm not sure how to identify it), and I have an ATI dual video card with two screens, but both show the same output, so I'm guessing that my CentOS does not know what it is, either (they show up as unidentified in the config file). I'm running 2.6.9-42.0.3ELsmp and can't upgrade to a newer kernel for the time being. Any suggestions? Thanks.

2 1

System hangs at "Rebooting System" on VIA KM400 chipsets
by nethub＠gmail.com 24 Jan '07

24 Jan '07

Hello, We have a number of systems running KM400 chipsets from VIA (Socket A/462). Two different models have produced the same results -- DFI KM400-MLV and MSI KM4M-V. When a /sbin/reboot or /sbin/shutdown -r now is issued, the system does everything you would expect from a reboot, but when it gets to Rebooting System, it hangs and requires a power cycle. The logs do not indicate anything is going wrong. It's not a kernel panic. I've tried appending "acpi=off noapic" or just "apci=off" to grub.conf and neither help. We've tested these boards extensively with various CPU's, hard drives, and RAM and they show no other issues, so it's not hardware defects or hardware compatibility issues. I'm not sure what is going on, but assistance would be greatly appreciated. Thanks.

4 7

RAID performance design? /home and os
by Christian Nygaard 24 Jan '07

24 Jan '07

I'm considering how to design a new file server with a 3ware 9650se RAID controller. How much would you estimate the impact to be on sharing /home and the operating system on one raid 6 set? /home is mostly read only accesses with a ratio 10:1 read/write. I'm a little bit concerned that the log writes in /var/log could impact read performance on /home causing disk head movements or that a little/non issue with modern Raid controllers? What would give best performance Scenario 1 8*500G Raid 6 /home and operating system Scenario 2 6*500GB Raid 6 /home 2*250GB Raid 1 operating system Looking for feedback Chris

2 1

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss