- Discuss - lists.centos.org

changing swap size
by Stewart Walker 30 Mar '07

30 Mar '07

Is it possible to change the swap size with out re-installing the system? Looking at the dd command but don't really know what to expect. Many thanks for your help -- This message has been scanned for viruses and dangerous content by MailScanner at caspercollege.edu and is believed to be clean.

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Something is writing a log
by Robert Moskowitz 30 Mar '07

30 Mar '07

I can just be sittting, doing nothing, and I hear the sound of my hardrive head moving. Just every so often. Like some process is writing a log. I have looked in /var/log and do see occational updates to acpi and messages, but that does not account for all the clicks. Is there somewhere else to look for logs? I would really like to know what process has something to remember.....

4 3

EXT3 fs error on RAID1 device
by Rasmus Back 30 Mar '07

30 Mar '07

Hi all. I have a Dell SC440 running Centos 4.4. It has two 500GB disks in a RAID1 array using linux software raid (md1 is / and md0 is /boot). Recently the root file system was remounted read-only for some reason. The logs don't show anything unusual, presumably the file system was read-only before anythng was logged. Running dmesg showed this error repeated many times: EXT3-fs error (device md1) in start_transaction: Journal has aborted Before rebooting the system I checked the raid array status with cat /proc/mdstat and mdadm. No errors were shown. When rebooting the system I let fsck do a check of the file systems. It reported several errors and I let it fix them. The thing that's bothering me is I can't find any reason for the EXT3 error. Nothing seems to be wrong with the array or the hardware. I also noticed a few worrying messages while booting up and shutting down. On boot-up mdamd complains that super-minor should only be declared once and then there's a message that File descriptor 21 is open. On shutdown there are messages that md0 and md1 are in immediate safe mode and that md1 is till in use. Is my system totally hosed or can I ignore these warnings? Thanks, Rasmus

6 10

Centos 3.6 or 3.7 CD isos x86_64
by Simpson, Kenneth 30 Mar '07

30 Mar '07

Hi - can someone please tell me where I can find Centos 3.6 or Centos 3.7 for x86_64? On the mirrors, there are directories labeled 3.6 and 3.7 but it's appears to be a lie. All the directories on the mirrors appear to be linked to 3.8 (and hence are mislabeled.) Thanks! -- Ken

2 2

Tape drive recommendations
by Mailing Lists 30 Mar '07

30 Mar '07

Hello all. I have 15 or so CentOS servers (now v4.4, I will upgrade them all to 5 when it comes out) and a few windows machines. I am looking to implement a network backup solution using Amanda. I will be backing up 200 gig or so to start, but that will grow. Does anyone have any recommendations on tape drives that will work "out of the box" with CentOS? Thanks, Joe

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samba on centos with printer drivers
by Dave 29 Mar '07

29 Mar '07

Hello, I'm trying to set up a CentOS 4.4 print server. I've attached a Usb Hp Deskjet 5150 printer to the box, and printed a test page. This worked fine, using cups. I then went to the samba howto, classical printer section, and followed the section for uploading pointprint drivers to the box. My first problem came when i told the error dialog no, then didn't see a new driver button in the resulting dialog either on the general tab or sharing tab. I next tried again, this time i said yes to the driver installation, went through, had the apw find the drivers, on my CD, and it uploaded them no errors or so i thought. The process completed without errors, the rom and the hard disk moved, yet checking the samba box in the print$ share nothing has been added and i have global permissions set for this operation. I am doing this as a member of the printeradmins group and in smb.conf i did set: use client driver = no default devmode = yes for i have had an issue with a previous deskjet uploading drivers, that one actually gave me an error, and adding default devmode fixed it. My samba version is 3.0.10 if that helps. Any suggestions welcome. Thanks. Dave.

1 0

(WAS:Re: [CentOS] apache error)
by Mark Quitoriano 29 Mar '07

29 Mar '07

On 3/22/07, Karl R. Balsmeier <karl(a)klxsystems.net> wrote: > > Mark Quitoriano wrote: > > > Hi, > > > > i restarted my apache and now im getting this error. > > > > Stopping httpd: [FAILED] > > Starting httpd: (98)Address already in use: make_sock: could not bind > > to address [::]:80 > > no listening sockets available, shutting down > > Unable to open logs > > [FAILED] > > it's saying it thinks port 80 is taken. lsof is a good program, I > forget it it's netstat or another that could show you active connections > to port 80. > > which version of apache are you running, is that apache the centos > version or the apache.org source, what OS version of Centos, and can you > run ps ax | grep httpd and see if there's another instance of apache > running. > > also do an ls -al /usr/local/apache/logs and/or /var/local/apache/logs > depending on where you keep these... > > yum install multitail will give you a nice program where you can type: > > multitail -s 2 /var/log/messages /usr/local/apache/logs/error_log > /usr/local/apache/logs/access_log great program! thanks! it'll display all your logs in real time, and you can use another window > (or a program like screen) to stop/start apache, and see what it's > crying about. > > If the server is new, maybe yum remove httpd, reboot, yum install httpd, > your call. > > > anyway i found the problem. but still no solution. when i do this commands # ls -l total 8 drwxr-xr-x 2 root root 4096 May 22 2006 conf drwxr-xr-x 2 root root 4096 May 22 2006 conf.d lrwxrwxrwx 1 root root 19 May 7 2006 logs -> ../../var/log/httpd lrwxrwxrwx 1 root root 27 May 7 2006 modules -> ../../usr/lib/httpd/modules lrwxrwxrwx 1 root root 13 May 7 2006 run -> ../../var/run the symlink of logs modules run are all in red. I can view the folders and files on those folders in symlink. What causing the problem? my HDD still have space. Filesystem Size Used Avail Use% Mounted on /dev/sda2 9.7G 806M 8.4G 9% / /dev/sda1 99M 14M 80M 15% /boot none 2.0G 0 2.0G 0% /dev/shm /dev/sda3 97G 226M 92G 1% /opt /dev/sda6 166G 33G 125G 21% /var

2 3

4.92 Beta questions.
by David Mackintosh 29 Mar '07

29 Mar '07

Installing through PXE, interactively from an NFS source. The installer is in text mode even though I have 512MB of memory. Two questions. 1. When installing package sets, I do not see an "Everything" option the way there was in 4.x. Should there be? I also don't recall being asked if I wanted Server/Workstation/Custom groupings. 2. When partitioning the disk, if I accidentally select "Use free space and create a default layout", the installer naturally cannot do anything. However it's failure mode is to report, then prompt for a reboot. Shouldn't it go back to the previous menu? I actually opened the second one as a minor bug, but then thought maybe I should ask about it first. -- /\oo/\ / /()\ \ David Mackintosh | dave(a)xdroop.com | http://www.xdroop.com

2 1

RE: [CentOS] software raid
by Mark Schoonover 29 Mar '07

29 Mar '07

Joshua Baker-LePain wrote: > RAID5/6 on > systems backed up to tape (oops, I seem to be crossing threads) > fulfills those requirements. No, you're not crossing threads, you're crossing tapes! :) What's wrong with NV anyway?? Mark

1 0

Samba
by Charles Yao 29 Mar '07

29 Mar '07

Hi guys, Is there a more user friendly way of using SAMBA? I'm not a technnical person and I've tried webmin to no avail. Any suggestions would help. Charles

10 12

differnt results between df and ls
by Tom Brown 29 Mar '07

29 Mar '07

Hi this is more than likely a general linux question but on a CentOS4 box whats going on here? # ls -al foo.txt -r--r--r-- 1 xxx xxx 1373149856 Mar 28 04:34 foo.txt # du -sh foo.txt 808M foo.txt any ideas ?

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DDR2 compile times (was Re: segfaults with 8 gig of ram)
by tblader 29 Mar '07

29 Mar '07

Hello All. Below are some compile times for 2.6.20 on an fx-62 running Centos64 with various 2 gig sticks of dual channel ram (See previous posts with subject of 'segfaults with 8gig of ram' for more details.) It seems dual channel will compile a kernel faster, but only gained around 30 seconds over 20 minutes. Below are the shortest/longest compile times of several compiles done over the weekend. Compile consisted of make menuconfig (save .config) time make dep clean bzImage modules 2 sticks dual channel @800mhz 10 samples ================================ real 791.46 user 664.10 sys 93.85 real 799.88 user 665.30 sys 93.87 4 sticks dual channel @400mhz 5 samples (before it hurled booting) ================================ real 876.19 user 712.98 sys 116.18 real 846.06 user 710.16 sys 115.42 3 sticks single channel @800mhz 6 samples ================================ real 815.74 user 673.73 sys 108.30 real 822.95 user 674.32 sys 108.62 -- Flambeau Inc. Technology Center - Baraboo, WI Email : tblader(a)flambeau.com Keyserver: http://pgp.mit.edu KeyID: 0x00E9EC2C

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RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

Joshua Baker-LePain wrote: > On Wed, 28 Mar 2007 at 11:54pm, Mark Schoonover wrote > > I really didn't mean for this to turn into a tape vs. disk based > backups debate -- everyone has their own needs and ways of meeting > them. But I have to disagree with the following: > >> Tape backups require user intervention everyday. There's no way >> around it, especially if you're testing your backups for reliability. > > No, they don't. With a library, you only need to change tapes when > you're out of slots (if then, depending on your library, dataset > size, retention needs, etc). And any decent backup software should > have some sort of verification built in or easily scripted. If you rely solely on your tape software verification to tell you your tapes are 100%, there will come a day, you'll be in for a surprise. The only 100% sure fire way to determine if your tapes are good is to actually restore from them back to a drive, and open them with the applications that created those files. Only after that kind of testing, can you be sure your tapes are good. I've had many tapes verified from the days of Arcserve, through Brightstor, Arkeia, CTAR and BRU. All of these backup software systems ran, and verified flawlessly, then a disaster struck only to find out my verified tapes actually had problems with them. Now, the $64K is, how many files do you need to test?? :) Thanks! Mark Schoonover *** Winner of the 2008 Best Psychic Award IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816

5 4

segfaults with 8 gig of ram
by tblader 29 Mar '07

29 Mar '07

Hello All. I have five Centos 4.4 x86_64 (amd fx-62) boxes with 4 gig of Corsair dual channel ram running kernel 2.6.9-42.0.10.EL (smp). The sixth box is the same except for video card and ram. It is using 8gig of GSkill dual channel ram and has a very cheap ATI video card in it. This box will segfault on boot unless I use noapic acpi=off and nolapic. Even with these boot params, the box is not 100% stable. I have seen udev segfault right when booting and also when copying 15 meg files from /tmp to /usr will lock things up sometimes. Yum and Perl have gotten corrupted as well at different times. I have 5 fans in the box to vent heat and the BIOS reports the CPU running around 90 degrees Farenheit when rebooting. I have run memtest86 (from Knoppix 5.1) all night long on the 8 gig of ram and it comes up OK. In the past, we have found problematic Corsair ram this way. This 8 gig seems to be OK as far as memtest thinks. Today I will begin removing ram and testing to see what happens. Does anyone have some ideas what might be the problem? All the other five boxes with Corsair ram work fine. Thanks

9 35

Cups issue - keeps re-writing cupsd.conf and mime.types
by Justin Barth 29 Mar '07

29 Mar '07

Hi, My Centos 4.4 server at home is serving a Samsung SCX-4521F printer, which the *nix and Win clients connect to through ipp. Every so often (maybe once a month), the cupsd.conf and mime.types files are updated, which makes the printer unavailable to the clients. My fix so far has been to stop cups, overwrite the files with cupsd.conf.working and mime.types.working (these are backup files of the originial working files), then start cups. Now my question is - how simple would it be to make a bash script that will monitor if the files have been updated, then perform the above actions automatically? Or, how would I stop the files from being updated in the first place? I seem to remember coming across an article about cups-config-daemon, which can update the files occasionally - I have disabled cups-config-daemon in chkconfig, but somehow these 2 files are still being updated. Thanks for any advice! -justin

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RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

Les Mikesell wrote: > Mark Schoonover wrote: >> Les Mikesell wrote: >>> Mark Schoonover wrote: >>>> John R Pierce wrote: >>>>> Aron.Darling(a)Emulex.Com wrote: >>>>>> Loader are totally a love/hate relationship. They do make life a >>>>>> lot easier as they do the tape movements for you which can be a >>>>>> tedious thing at times. With a loader or library you can script >>>>>> the entire operation with tar, MTX and MT and let cron do all the >>>>>> work for you. Always look for the OEM rather than buying the name >>>>>> brand equipment, they are most always the same HW and FW with a >>>>>> different model number in it. >>>>> otoh, its hard to beat a 3 year warranty and on location support >>>>> from the same vendor as your server hardware, assuming your a >>>>> brand name shop in the first place.... hugely reduces finger >>>>> pointing when there's a complex issue to resolve. with OEM >>>>> hardware bought on the whitebox market, you're often faced with >>>>> replace or self-repair option at cost. >>>>> >>>> Having used a 20 tape library, and suffering through restores with >>>> AIT2 tapes taking 10-12 hours per tape, I gave up on them. I went >>>> with good old rsync, and built up a 4 TB system to handle backups. >>>> Once configured, it's nearly a 100% hands off solution. You can >>>> read about what I've done here: >>>> http://marks-tech-pages.blogspot.com Works great especially for >>>> TBs of data that needs to be backed up every day. >>> If you want something that stores the backups much more efficiently >>> (with a price in processing to do it), look at backuppc: >>> http://backuppc.sourceforge.net/ >>> >>> It compresses everything and hardlinks all duplicates so you can >>> keep about 10x what you'd expect online, and it has a nice web >>> interface for browsing the backups and doing restores. >> >> Thanks Lee. I did look at backuppc before, and I didn't want >> anything that compresses files, or used a web interface. Using >> rsync, it's a matter of scp to restore, and that's it. I do use >> hardlinks to duplicate data, so my storage requirements are kept as >> small as possible. Just about any CentOS system can be configured to >> run backups in the manner I've written up, nothing extra to install >> or learn. So, like most things, it boils down to individual needs >> and expertise. I know for myself, tape backups just weren't working >> well at all. >> > > Backuppc can be configured to not compress, although I think the > filenames are still somewhat mangled and don't have their real > attributes so you can't access them directly. The web interface is > also optional and there are command line tools for everything you > need. It is handy to be able to download a single file or tar/zip > archive directly through a browser, though - and in the latest > version you can edit the configuration through the web interface. I've thought about adding a web restore so users can restore their own files to their own home directories. Most of my problems come from my graphics dept, where it's not uncommon for them to 'accidently' delete 500GB of data. It would be nice to offload those kinds of requests to the users, but only to a point, and on an employee by employee basis. Mark

2 1

RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

John R Pierce wrote: > Mark Schoonover wrote: >> Cost is another factor. An Exabyte LTO3 1x7 loader is MSRP $6500, >> with 20 tapes $1130 in a pack. My 4TB backup server cost just under >> $5000 at the time, cheaper today. Then, you have the daily admin of >> flipping tapes. Disks run without intervention once configured, and >> it's nice to have especially if you have employees working over the >> weekends, or on holidays. >> > > > HP's version of that same LTO3 1/8 autoloader is around $5000 street > price (sometimes under $4500). The Quantum OEM version > ("Superloader") is about the same. > > of course, 20 LTO3 tapes is 16 terabytes. and you can have another > 16 terabytes in archive for another $1100 or whatever. That 1/8 > autoloader holds 8 of them, which is 6.4 terabytes online with no > operator intervention required until it comes time to ship a box of > tapes to the offsite vault. > Assuming 2:1 compression will you get 16TB, but with my data, 1.3:1 is more realistic. Now that you mention it, a similar disk backup system is located 100 miles away in a colo site. Every night I do offsite backups, automatically. No shipping tapes, or other user intervention. Tape backups require user intervention everyday. There's no way around it, especially if you're testing your backups for reliability. Mark

2 1

Complex sendmail alias handling
by Steve Campbell 29 Mar '07

29 Mar '07

Getting in late on this one, but if I didn't need to spend money, couldn't spend money, or what ever the reason may be, and the aliasing was something that needed changing on a schedule, then why not just set up multiple alias files, run cron to replace them when needed, and "newaliases", all in cron scripts? You would need to maintain as many versions as required, but sounds like it might work with minimal effort and expense. Complex is a relative term, and this may be oversimplifying, but it would work. Steve Campbell campbell(a)cnpapers.com Charleston Newspapers

5 18

NPTL degraded?
by Lonny Selinger 29 Mar '07

29 Mar '07

I'm not sure what has happened but for some reason my CentOS 4 system is showing me using default threads?? # getconf GNU_LIBPTHREAD_VERSION linuxthreads-0.10 # uname -rimpv 2.6.9-42.0.10.EL #1 Tue Feb 27 09:24:42 EST 2007 i686 athlon i386 I could have sworn it used to show: NPTL 2.3.4 Like a couple other machines. Any ideas what might have changed this or how I get it back??? the devel package for NPTL is installed but from my understanding that has little to do with why getconf is showing this. I'm feeling new here :-) TIA -- Lonny -- "To mess up a Linux box, you need to work at it; to mess up your Windows box, you just need to work ON it."

3 7

pagecache corruption on Tyan S3870
by Dan Halbert 29 Mar '07

29 Mar '07

A couple of months ago I reported some problems with a batch of Tyan K8SSA (S3870) based machines. We are continuing to have an odd problem with these boxes, and if anyone has seen something similar elsewhere, I'd appreciate hearing about it. These boxes are running Centos 4.4 x86_64 with kernel 2.6.9-42.0.3.ELsmp. They are dual Opteron 265's (dual core) with 4x2GB DIMM's. The DIMMs used to be mixed sizes, but Tyan recommended making them all the same, and the vendor made the substitutions. We have also clocked the memory down from 400 MHz to 266 MHz, also on the advice of Tyan. The symptom is that some large (700MB to >1GB) files opened for read and then closed show corruption in the pagecache. One or more 4k blocks in a file will be completely trashed. It's as if a random page of other data is substituted. A reboot or a flush of the pagecache fixes the problem, so it's only in the pagecache, not on disk. We are doing regular MD5 checksums of the files, which shows up the problem, in addition to having our application crash from time to time. We have some older Tyan motherboards that don't show this problem. At this point it seems it is either a hardware problem or a kernel motherboard-support problem, but it's pretty baffling. Thanks, Dan

4 9

RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

John R Pierce wrote: > Aron.Darling(a)Emulex.Com wrote: >> Loader are totally a love/hate relationship. They do make life a lot >> easier as they do the tape movements for you which can be a tedious >> thing at times. With a loader or library you can script the entire >> operation with tar, MTX and MT and let cron do all the work for you. >> Always look for the OEM rather than buying the name brand equipment, >> they are most always the same HW and FW with a different model >> number in it. > > > otoh, its hard to beat a 3 year warranty and on location support from > the same vendor as your server hardware, assuming your a brand name > shop in the first place.... hugely reduces finger pointing when > there's a complex issue to resolve. with OEM hardware bought on the > whitebox market, you're often faced with replace or self-repair > option at cost. > Having used a 20 tape library, and suffering through restores with AIT2 tapes taking 10-12 hours per tape, I gave up on them. I went with good old rsync, and built up a 4 TB system to handle backups. Once configured, it's nearly a 100% hands off solution. You can read about what I've done here: http://marks-tech-pages.blogspot.com Works great especially for TBs of data that needs to be backed up every day. HTH Mark Schoonover IS Manager American Geotechnical - California, Nevada and Arizona V-> 858.450.4040 F-> 714.685.3909 C-> 858.472.3816 "Eternity is a very long time, especially towards the end." -- Stephen Hawking

4 3

RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

Joshua Baker-LePain wrote: > On Wed, 28 Mar 2007 at 10:07pm, Mark Schoonover wrote > >> Having used a 20 tape library, and suffering through restores with >> AIT2 tapes taking 10-12 hours per tape, I gave up on them. I went >> with good old > > One of the lovely bits about LTO3 -- 400GB native, 80MB/s => restore a > whole tape in under 2 hours. Joshua, 200 gigs an hour is pretty good for a tape, but what happens if the tape you've backed up to is bad, or has a bad spot? You've lost your backup. 400GB in drives is a fraction of the cost of tapes these days. I do agree, my max throughput over a quiet gigbit network is going to be around half the speed of the LTO, I look at the fact that I'm only backing up the daily changes, not an entire server like you'd do to tape. With rsync doing compression over SSH, it looks like I'm backing up an entire 1.3TB system in 90 mins. Sure, you can do differental backups to try to keep your number of tapes to a minimum. Backing up straight to disk ends up being faster all around, plus it's on a RAID5 system so loosing a drive isn't all that big a deal. Going to disk is also fast enough, I can run hourly backups during business hours. Where LTO tapes will outrun is during a total server failure where I have to restore all data back to a server. Then my network becomes the bottleneck, but you still won't have to gamble spanning across multiple tapes to fit >400GB of data. My past problems have never been with backing up, it's been with restoring the data. Either too slow to restore, or since I needed 10 tapes to backup, I'd end up with one of them having a bad spot that would abort the restore. The only way to know for sure if your tapes are 100% is to try to do an entire restoration. Simply running a tape verify isn't enough. Cost is another factor. An Exabyte LTO3 1x7 loader is MSRP $6500, with 20 tapes $1130 in a pack. My 4TB backup server cost just under $5000 at the time, cheaper today. Then, you have the daily admin of flipping tapes. Disks run without intervention once configured, and it's nice to have especially if you have employees working over the weekends, or on holidays. These were just my requirements, and my thought processes that lead me away from tapes all together. YMMV, your specifics are probably different. Mark

2 1

RE: [CentOS] Tape drive recommendations
by Mark Schoonover 29 Mar '07

29 Mar '07

Les Mikesell wrote: > Mark Schoonover wrote: >> John R Pierce wrote: >>> Aron.Darling(a)Emulex.Com wrote: >>>> Loader are totally a love/hate relationship. They do make life a >>>> lot easier as they do the tape movements for you which can be a >>>> tedious thing at times. With a loader or library you can script >>>> the entire operation with tar, MTX and MT and let cron do all the >>>> work for you. Always look for the OEM rather than buying the name >>>> brand equipment, they are most always the same HW and FW with a >>>> different model number in it. >>> >>> otoh, its hard to beat a 3 year warranty and on location support >>> from the same vendor as your server hardware, assuming your a brand >>> name shop in the first place.... hugely reduces finger pointing >>> when there's a complex issue to resolve. with OEM hardware bought >>> on the whitebox market, you're often faced with replace or >>> self-repair option at cost. >>> >> >> Having used a 20 tape library, and suffering through restores with >> AIT2 tapes taking 10-12 hours per tape, I gave up on them. I went >> with good old rsync, and built up a 4 TB system to handle backups. >> Once configured, it's nearly a 100% hands off solution. You can read >> about what I've done here: http://marks-tech-pages.blogspot.com >> Works great especially for TBs of data that needs to be backed up >> every day. > > If you want something that stores the backups much more efficiently > (with a price in processing to do it), look at backuppc: > http://backuppc.sourceforge.net/ > > It compresses everything and hardlinks all duplicates so you can keep > about 10x what you'd expect online, and it has a nice web interface > for browsing the backups and doing restores. Thanks Lee. I did look at backuppc before, and I didn't want anything that compresses files, or used a web interface. Using rsync, it's a matter of scp to restore, and that's it. I do use hardlinks to duplicate data, so my storage requirements are kept as small as possible. Just about any CentOS system can be configured to run backups in the manner I've written up, nothing extra to install or learn. So, like most things, it boils down to individual needs and expertise. I know for myself, tape backups just weren't working well at all. Thanks! Mark

2 1

cad - 3d in linux
by devel 28 Mar '07

28 Mar '07

Hello, Anyone know program capable of import 3ds files of Autodesk, similar to 3ds studio for linux? -- -- Publicidad http://www.pas-world.com

3 2

Re: [CentOS] removed centos from dual boot laptop (now having trouble booting)
by Pitshou Asingalembi 28 Mar '07

28 Mar '07

i think that you can also use software that permit you to put xp's partition to be bootable: 1.DOS fdisk 2. Debian(only put xp's partition to be bootable and you can stop your installation). --------------------------------- Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses.

1 0

Using yum 2.4.x under centos3
by carlopmart 28 Mar '07

28 Mar '07

Hi all, Somebody have test it yum 2.4.x (http://linux.duke.edu/projects/yum/download/2.4/yum-2.4.3-1.src.rpm) under centos3?? I have installed an mrepo RHEL5 server to serve updates for rhel3, rhel4, rhel5, centos3, centos4 and centos5 (when becomes GA) and RHEL5 doesn't provides yum-arch ... Thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

1 0

Thanks to the list for 3ware RAID info...
by Mailing Lists 28 Mar '07

28 Mar '07

All: Thanks to everyone who participated in the rather long thread recently about RAID arrays and CentOS. I have been needing to research RAID for CentOS for some time, so the discussion was timely for me. Based on the discussion in that thread, I bought a 3ware 9650SE card and a bunch of WD drives. I was told by 3ware that 9650SE driver will likely not be in the CentOS 5 kernel (unless RH put it there) since it is based on 2.6.18. The 9650SE driver is not in the Linux kernel until 2.6.19. However, 3ware said they would be happy to provide a driver disk to use with the installer, so it will be no big deal. In case anyone else will find this useful, I would like to say that I am planning to use these with a 975XBX2 logic board from Intel (975X chipset). The 3ware rep said that the 9650SE card does work with the 975XBX2 with the latest Intel firmware. I have built 4 servers (3 for Asterisk, 1 for MySQL) around this "desktop" board and the all run CentOS very nicely. Again, thanks for all the info. CentOS really has a great community! -Joe

3 2

Zimbra, Scalix or something else..
by Centos-admin 28 Mar '07

28 Mar '07

Hello all, I've played with both Zimbra and Scalix and they seem quite nice and do pretty much what I want. I'm now at the point where I am considering retiring my trusty old courier-imap service in favour of one of these two, unless of course anyone has any other recommendations or suggestions. I'd probably be doing this inside a centos 4.4 Xen VMs running on centos 5 when it comes out. Also, I'd really appreciate if anyone could share any thoughts and/or experiences with Zimbra and Scalix. Cheers, Brian. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

5 6

CentOS plus and sharing usb hdd
by Filianx 28 Mar '07

28 Mar '07

Hi, anyone got an idea if I use the CentOS plus kernel for CentOS 4.4 will I be able to share an attached usb drive ( attached to the CentOS box ) over my home network, I can't with the default kernel Ta. -- Filianx

2 1

Cannot Add Virtual Guest
by Rob Kettle 28 Mar '07

28 Mar '07

Hello, I have installed CentOS 5 beta and am trying to create a Guest Virtual Machine using the graphical interface. I complete the various boxes and when I click Finish I get a message saying that it cannot mount the NFS location that I supplied for the source of the install media. I can mount the NFS share manually in a terminal window so I know I have the correct path. Any help woudl be appreciated. Rob -- This message has been scanned for viruses and other dangerous content by MailScanner, and is believed to be clean.

1 0

RE: [CentOS] Tape drive recommendations
by Plant, Dean 28 Mar '07

28 Mar '07

Don Knott wrote: > LTO3 is the standard these days... LTO4 will be out midyear hopefully > and maybe LTO3 prices will come down. > > I use BRUServer for network backup. It provides similar services to > what your planning to use Amanda for. They maintain a good bit of > information at their websites about drives & scsi cards. I'm on an > older RHEL kernel which they don't support because of scsi problems > that require me to reboot it about 4:00am each day to keep the tape > drive in view or it disappears. Other than that, the setup works well > and LTO3 is fast. > > http://www.tolisgroup.com/ > http://www.linuxtapecert.org/ > Also don't use adaptec SCSI cards with LTO on CentOS3/4. Either the card or the Linux driver just causes hours of heartache. LSI was recommended to me from this list and solved the numerous problems we had while using adaptec/LTO. Dean

2 1

Error Connecting to CN Exception occcurred
by Geof Duncan 28 Mar '07

28 Mar '07

Exception type exceptions.ValueError Exception Handler Information Traceback (most recent call last): File "/usr/share/rhn/rhn_applet/rhn_applet.py", line 521, in refresh self.model.refresh(force) File "/usr/share/rhn/rhn_applet/rhn_applet_model.py", line 457, in refresh source.refresh(force) File "/usr/share/rhn/rhn_applet/rhn_applet_source.py", line 35, in refresh self._do_refresh() File "/usr/share/rhn/rhn_applet/rhn_applet_rpc.py", line 209, in _do_refresh server = self.create_server() File "/usr/share/rhn/rhn_applet/rhn_applet_rpc.py", line 87, in create_server s.add_trusted_cert(self.__cert__) File "/usr/lib/python2.3/site-packages/rhn/rpclib.py", line 466, in add_trusted_cert self._transport.add_trusted_cert(certfile) File "/usr/lib/python2.3/site-packages/rhn/transports.py", line 254, in add_trusted_cert raise ValueError, "Certificate file %s is not accessible" % certfile ValueError: Certificate file /usr/share/rhn/CNS-CA-CERT is not accessible -Geof C. Duncan http://teachageek.com TeachAGeek... give a man to fish he eats for a day, teach a man to fish and he eats for a lifetime. Become one with your inner geek!

4 4

CentOS 4.4 - postgis / postgres Issue
by Tom Brown 28 Mar '07

28 Mar '07

Hi I know this is not directly centos related but if anyone has used postgres before then that would be a help!! Normally i'm an oracle or mysql guy. I have to install a qa postgres box that uses postgis. All seems well but when the devs import the schema this happens... ERROR: could not access file "$libdir/libpostgis.so.0.9": No such file or directory and indeed that library does not exist anywhere on the box. I have looked at the rpm downloaded from postgis.refractions.net and again this library is missing. Is anyone familiar with this setup and know what could be wrong? This was installed using rpm's and not compiled from source. thanks

1 0

removed centos from dual boot laptop (now having trouble booting)
by Jerry Geis 28 Mar '07

28 Mar '07

HI all, I had centos on a laptop (dual boot xp). I am giving the laptop to another person so I removed centos. Now when I reboot grub is confused... I tried to manually enter rootnoverify (hd0,0) makeactive chainloader +1 boot This does boot into XP but how do I tell grub that this is the new rules and do this everytime at boot. Thanks, Jerry

2 1

Re: [CentOS] How to limit a user to access a few sites. (SOLVED)
by Indunil Jayasooriya 28 Mar '07

28 Mar '07

Hi Roy and calin.kalinix.cosma, Thanks for your help all the given to me. Finally, I got it done. Binding an ip address to an username with SQUID and limiting access of some users with their ips to a few sites rules added to squid.conf file external_acl_type ip_user %SRC %LOGIN /usr/lib/squid/ip_user_check -f /etc/squid/ip.conf acl ncsa_users proxy_auth REQUIRED acl ip_users external ip_user %SRC %LOGIN acl clientips src 192.168.101.28 192.168.101.29 192.168.101.30 acl allowedsites url_regex -i "/etc/squid/allowedsites.txt" http_access deny !ncsa_users http_access deny !ip_users http_access deny clientips !allowedsites http_access allow ip_users clientips http_access allow ip_users allowedsites http_access allow ncsa_users clientips http_access allow ncsa_users allowedsites http_access deny clientips Then, created /etc/squid/ip.conf and add the pair (ip and username) [root@worldnet squid]# cat /etc/squid/ip.conf 192.168.101.25 indunil 192.168.101.26 asanka 192.168.101.28 www28 192.168.101.29 www29 192.168.101.30 www30 192.168.101.90 www90 Then, by using htpasswd, I created /etc/squid/squid_passwd file. [root@worldnet squid]# cat /etc/squid/squid_passwd indunil:TeiAQ3uqXDQNg www:Oi4THedCcN0nQ web:EEluAdNUco6.g www90:3CNziF2SkgmAo www28:eXuWlloKq1mk2 www29:6UH7KXjAZ769o www30:RtjV9ZZHEzzaA asanka:gX88uJrvXSV7A Then, created /etc/squid/allowedsites.txt file. [root@worldnet squid]# cat /etc/squid/allowedsites.txt .freebsd.org ebay cnn.com bbc google Then, Finally, [root@worldnet squid]# /etc/init.d/squid restart THNAKS INDUNIL On 3/27/07, Roy Ong <centos-list(a)royong.com> wrote: > On Tue, 2007-03-27 at 12:58 +0530, Indunil Jayasooriya wrote: > > Hi, > > > > > > > > > > I think you probably need to combine a few rules together. > > > Consider the following > > > > > > acl ncsa_users proxy_auth REQUIRED > > > acl ip_users external ip_user %SRC %LOGIN %DST > > > > > acl ALLOWED_DOMAINS url_regex -i google.com bbc.com cnn.com > > > > > > http_access deny !ncsa_users > > > http_access deny !ip_users > > > http_access allow ip_users ALLOWED_DOMAINS > > > http_access allow ncsa_users ALLOWED_DOMAINS > > > http_access deny all > > > > These rules say that ALL the ips have access to google.com bbc.com cnn.com. > > > > That is not What I want. > > oh ok - probably i didn't understand your requirements clearly enuff - i > see that you have provide some details below and i'll attempt there. > > > This is my senario. > > > > There are about 50 users browsing internet. 3 users out of those 50 > > misuse internet. > > So I only want to limit these 3 users. > > Let's say their ips are 192.168.101.25, 192.168.101.26, 192.168.101.30 > > > > Now I want to limit these 3 users' internet acsess to google.com > > bbc.com cnn.com. > > AND, the rest of users should have access to whole wolrd. > > > > I wrote below rules. Pls check !! > > > > external_acl_type ip_user %SRC %LOGIN /usr/lib/squid/ip_user_check -f > > /etc/squid/ip.conf > > > > acl ncsa_users proxy_auth REQUIRED > > acl ip_users external ip_user %SRC %LOGIN > > > > acl clientips src 192.168.101.25 92.168.101.26 192.168.101.30 > > acl allowedsites url_regex -i "/etc/squid/allowedsites.txt" > > > > http_access deny !ncsa_users > > http_access deny !ip_users > > http_access allow ip_users clientips > > http_access allow ip_users allowedsites > > http_access allow ncsa_users clientips > > http_access allow ncsa_users allowedsites > > http_access deny clientips > > i would probably change to > > http_access deny !ncsa_users > http_access deny !ip_users > http_access deny clientips !allowedsites <---added this > http_access allow ip_users clientips > http_access allow ip_users allowedsites > http_access allow ncsa_users clientips > http_access allow ncsa_users allowedsites > http_access deny clientips > > the added statement will DENY access if they belong to "clientips" i.e. > 192.168.101.25 or 192.168.101.26 or 192.168.101.30 AND they are trying > to go to a url that is NOT defined in /etc/squid/allowedsites.txt > > remembering that http_access statements are carried out in sequence, the > following will probably be true for the above > > 1. DENY if NOT ncsa_users > 2. DENY if NOT ip_users > 3. DENY if clientips AND NOT allowedsites > 4. ALLOW if ip_users AND clientips > 5. ALLOW if ip_users AND allowedsites > 6. ALLOW if ncsa_users AND clientips > 7. ALLOW if ncsa_users AND allowedsites > 8. DENY if clientips > > > > my etc/squid/allowedsites.txt is like this. > > [root@worldnet ~]# cat /etc/squid/allowedsites.txt > > google.com > > bbc.com > > cnn.com > > > > > > But, It still does not work. > > > > Pls help me to solve this issue. > > > > > > > > > Basically, a new ACL was added and the corresponding http_access test, > > > it will only > > > > > > (a) be allowed IF it fulfilled the test of being an ip_users and going > > > to a domain as defined in the ALLOWED_DOMAINS acl > > > > > > ~ or ~ > > > > > > (b) be allowed IF it fulfilled the test of being an ncsa_users and going > > > to a domain as defined in the ALLOWED_DOMAINS acl > > > > > > Hope this helps. > > > > > > > > > _______________________________________________ > > > CentOS mailing list > > > CentOS(a)centos.org > > > http://lists.centos.org/mailman/listinfo/centos > > > > > > > > -- Thank you Indunil Jayasooriya

1 0

RE: [CentOS] OpenOffice 2.1 with CentOS 4.4 x86_64 doesn't work
by MOKRANI Rachid 28 Mar '07

28 Mar '07

Hi, After some investigations, I can run Openffice 2.1 on CentOS 4.2 x86_64. The problem is the javadlx program. The first solution is to comment the line javadlx in the file /usr/soft/bin/soffice. After doing this all works fine. OR An other second solution, is to not comment the line javadlx and remove the following package /usr/bin/yum -y remove java-1.4.2-gcj-compat-1.4.2.0-27jpp.noarch After doing one of this, OpenOffice 2.1 start fine. Regards. __________________________ Ce message (et toutes ses pièces jointes éventuelles) est confidentiel et établi à l'intention exclusive de ses destinataires. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'IFP décline toute responsabilité au titre de ce message. This message and any attachments (the message) are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. IFP should not be liable for this message. Visitez notre site Web / Visit our web site : http://www.ifp.fr __________________________

1 0

Backing Up A Xen Guest
by Graham Jenkins 28 Mar '07

28 Mar '07

Here's the problem. We perform full tar backups of our CentOS 4/5 machines in real-time at regular intervals. And when a disaster happens, we are able to restore those backups onto virgin filesystems, make the /dev/null, /dev/zero and /dev/console devices .. and boot the machine. This has worked well on standalone systems, and also on Xen 3.0.3 guests on CentOS 4.4 machines, where each guest filesystem resides on regular (Xen-host) real filesystem. But there's no way we've been able to make it work for CentOS 5 Beta guests on CentOS 5 Beta Xen hosts, where each guest disk resides in a file. The strategy goes something like: * losetup -o 32256 /dev/loop0 /XenGuests/Guest1 * mkfs -t ext3 /dev/loop0 * mount -t ext3 /dev/loop0 /mnt * cd /mnt && tar xjpf /tmp/Guest1.tbz * for i in console null zero; do /sbin/MAKEDEV -d /mnt -x $i; done * cd /tmp; umount /srv/vm1; losetup -d /dev/loop0 * xm create -c Guest1 And it always gets most of the way through .. then the guest dies. Ideas anyone .. please? -- Graham Jenkins +61 3 9925 4909 Victorian Partnership for Advanced Computing http://www.vpac.org/ PO Box 201, Carlton South, Vic. 3053, Australia

2 2

telnet and Gnome logins
by Kanwar Ranbir Sandhu 28 Mar '07

28 Mar '07

Hello, I have a thin client user with a regular Gnome desktop that he logs into everyday. He also telnets from a remote site into the same server that provides his Gnome desktop. I know, telnet is insecure, but it's all over VPN, so it's a little better. Also, he's using telnet from Windows system. Anyway, management wants a console app to be executed when that user logs in over telnet. That's easy enough with a "exec app" line in his .bash_profile. But, that prevents gnome-session from starting when he logs into his Gnome desktop. Is it possible to do both? That is, give him his Gnome desktop when he logs in from GDM, and the console app when he logs in over telnet? The easiest solution I can think of is installing NX Client on the Windows PC and configuring it to execute a script that starts gnome-terminal with console app passed to it (gnome-terminal -x app). freenx is already installed and running on the server. Are there any other options? Regards, Ranbir -- Kanwar Ranbir Sandhu Linux 2.6.20-1.2925.fc6 i686 GNU/Linux 12:29:45 up 4 days, 3:26, 3 users, load average: 0.12, 0.29, 0.67

3 3

how to replace files only if larger
by Robert Moskowitz 28 Mar '07

28 Mar '07

I am consolidating a lot of files. I have archives of Internet drafts, from over the years. I just pulled down all the current Internet Drafts. I want to mv all my other stored IDs to this current directory ONLY if, they are larger. You may be aware that when a draft is expired, a small file is left in the directory for some time with content like: "This Internet-Draft has been deleted. Unrevised documents placed in the Internet-Drafts directories have a maximum life of six months. After that time, they are deleted. This Internet-Draft was not published as an RFC. " If I have the actual draft, I would like it to replace this little tab. But if the draft is still available, then my old archive will tend to have a newer date, as I use to grab IDs via FTP which would date my copy the date I grabbed them. I built my current directory with wget with the -m option, which perserves the original file's date... I would even be willing to do this with Nautilus, but so far it just tells me the file exists in the target directory and do I want to replace it... Thanks for any help you can provide... ============================ Just had a 'nasty' thought. By using mget -m to maintain my IDs directory, all my efforts would be for naught, as the deleted message file will have a newer date than my copy of the original draft and overwrite it. Crude. Got to think some more on this......

2 1

CentOS and EMC PowerPath/Naviagent
by Bisbal, Prentice 28 Mar '07

28 Mar '07

Is anyone using CentOS 4.4 with an EMC Clariion SAN? In particular, I want to know if PowerPath and Naviagent will work on a CentOS 4 system connected to a san using Qlogic or Emulex cards. I tried a couple years ago with Fedora Core 1 or 2, and couldn't get the kernel modules from PowerPath to work since the kernel wasn't the official RHEL one. I'm most interested in Centos4.4/x86_64, but Centos 4.4/x86 is if interest, too. -- Prentice The contents of this communication, including any attachments, may be confidential, privileged or otherwise protected from disclosure. They are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, please do not read, copy, use or disclose the contents of this communication. Please notify the sender immediately and delete the communication in its entirety.

2 3

Mutt (derived from: Anaconda Slides in "Other Than English")
by Leonardo Pinheiro 28 Mar '07

28 Mar '07

On 3/27/07, Rodrigo Barbosa <rodrigob(a)darkover.org> wrote: > On Tue, Mar 27, 2007 at 06:07:48PM +0200, Ralph Angenendt wrote: > > Not in my mutt >:) > <...> but > Mutt is defaulting that particular attachment to iso-8859-1 here I am sorry, I couldn't understand the Mutt part. Does that mean you've been using Mutt? :-) How good is it? Any comments on the differences (productivity, mail filtering, etc) from the graphical mail clients? Why do you use it? Thanks Leonardo

4 3

xscreensaver version 5 for CentOS 4.4
by David A. Woyciesjes 27 Mar '07

27 Mar '07

Has anybody seen this around? -- --- David Woyciesjes

1 0

Samba config for Windows on VMWare
by Mark Hull-Richter 27 Mar '07

27 Mar '07

I know this is a little off topic (not as usual, dammit!), but I figure at least one of y'all can handle this one. I have tried to configure my CentOS4.4 Plus desktop for samba sharing with the VMWare Windows that runs on it. However, no matter what I've done so far, I can't get the Windows to recognize this machine as a legitimate network destination. Here's my samba config file: [root@mhullrichter shared]# cat /etc/samba/smb.conf # Global parameters [global] server string = Samba Server security = SHARE log file = /var/log/samba/%m.log max log size = 50 socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 printcap name = /etc/printcap dns proxy = No idmap uid = 16777216-33554431 idmap gid = 16777216-33554431 cups options = raw [homes] comment = Home Directories read only = No browseable = No [public] comment = Data path = /home/mark force user = mark force group = users read only = No guest ok = Yes [printers] comment = All Printers path = /var/spool/samba printable = Yes browseable = No It passes testparm, the smb daemons are up and running: [root@mhullrichter shared]# psg smbd root 2751 1 0 11:44 ? 00:00:00 smbd -D root 2752 2751 0 11:44 ? 00:00:00 smbd -D I noticed that neither the nmbd nor winbindd daemons are running - dunno why, the startup showed [ OK ]. But in the Windows, it can see my machine but can't connect to it - what am I missing? Mark Hull-Richter Linux Kernel Engineer (949) 680-3082 - Office (949) 680-3001 - Fax (949) 632-8403 - Mobile mhull-richter(a)datallegro.com <mailto:mhull-richter@datallegro.com> www.datallegro.com <http://www.datallegro.com>

8 22

SMP kernels and top output
by Bisbal, Prentice 27 Mar '07

27 Mar '07

Hi, everyone. I'm new to the list. This question may have come up before, but I couldn't find an answer to it by searching the centos website. Could be I was using bad keywords for my search. I have 3 HP xw9300 workstations (dual AMD Opteron 64-bit processors) that I'm upgrading from RHEL3WS to CentOS 4.4. I've upgraded two already, with one left to go. On the system with RHEL3WS, 'top' shows statistics for each processor and what processor # each process is running on. On the systems running CentOS 4.4, the output of 'top' looks like that of a uniprocessors system - there are no statistics for each processor and it doesn't show which processor each process is running on. However, /proc/cpuinfo shows the two processors. Does this mean that my OS isn't seeing the second processor, or has the behavior of top changed between the two OS versions? Is there any way that I Can verify that both processors are being used? -- Prentice The contents of this communication, including any attachments, may be confidential, privileged or otherwise protected from disclosure. They are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, please do not read, copy, use or disclose the contents of this communication. Please notify the sender immediately and delete the communication in its entirety.

4 6

Re: [CentOS] Problems with screensavers / X config
by Mark Hull-Richter 27 Mar '07

27 Mar '07

>> -----Original Message----- >> From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On >> Behalf Of Jim Perrin >> Sent: Friday, March 23, 2007 11:13 AM >> To: CentOS mailing list >> Subject: Re: [CentOS] Problems with screensavers / X config >> Then let's have a look at your xorg.conf and your Xorg.0.log. -- Joshua Baker-LePain Department of Biomedical Engineering Duke University Well, the log file is 853 lines long with no timestamps, but here are a couple of recurring errors that look like they might be relevant: (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found) (WW) Open APM failed (/dev/apm_bios) (No such file or directory) I suspect the first is a key to this problem, but I have no idea where GLX is looking for the nvidia driver or why it would not be there. Quick review: when I finally got the system into init 3 state, I ran the nvidia installer, it compiled the driver on host and said everything wa fine. I have no clue what the second one means or why it would be happening. The two errors are not directl connected to each other and appear with a random number and type of message in between. mhr PS: Jim, your reputation is safe and secure, at least for me. PPS: Sorry if the thread was broken here - disparity between digest mode here and individual emails at work. I'll fix this at some point, probably after I get samba to let my Windows VM talk to my disk drives....

2 2

Question about rebooting and iptables rules persisting
by Preston Crawford 27 Mar '07

27 Mar '07

So I use Samba on my home network. I open the samba ports in the GUI tool for CentOS 4. Here is the problem. Every time I reboot I'm forced to run system-config-securitylevel to get firewall ports open again. So like if I reboot samba won't work. I go into that tool either via command line or via the GUI and I simply click "ok" and samba is suddenly open. Does anyone know what is happening? I've tried iptables -save or whatever. Nothing seems to work in getting these ports to be open on reboot. Preston

6 17

Re: [CentOS] Tape drive recommendations
by Mookie Kong 27 Mar '07

27 Mar '07

I've been using AIT for a while now and have had no problems with it. AIT-4 would suit you well with its 200GB native capacity. All SCSI drives should be supported well in CentOS.

1 0

Zenoss on Cent 5
by Sean Brown 27 Mar '07

27 Mar '07

Has anyone tried getting Zenoss (zenoss.com) built and running on Cent 5? I'm having the damndest time getting the src.rpm to build. Thanks

2 1

Performance problem with CentOs 4.4 Samba
by "Petr \"Qaxi\" Klíma" 27 Mar '07

27 Mar '07

Hello I experience performance problem with CentOs 4.4 Samba 3.0 Reading files from Samba (1 client WinXP) is 3 times slower than writing to samba. What should I look at? OS je CentOS 4.4 (RHEL 4 U4) # smbd --version Version 3.0.10-1.4E.11 CFG ================================================================== # cat /etc/samba/smb.conf [global] workgroup = GROUP netbios name = SERVER server string = Samba Server passwd program = /usr/bin/passwd %u passwd chat = *New*Password* %n\n*Re-enter*new*password* %n\n *Password*changed* passwd chat debug = no pam password change = yes unix password sync = yes username map = /etc/samba/smbusers log level = 1 syslog = 0 interfaces = eth0, lo bind interfaces only = yes name resolve order = wins host bcast printcap name = CUPS show add printer wizard = No add user script = /usr/sbin/useradd -g users -m '%u' delete user script = /usr/sbin/userdel -r '%u' add group script = /usr/sbin/groupadd '%g' delete group script = /usr/sbin/groupdel '%g' add user to group script = /usr/sbin/usermod -a -G '%g' '%u' add machine script = /usr/sbin/useradd -s /bin/false -d /var/lib/nobody '%u' logon script = scripts\login.bat logon path = logon drive = H: domain logons = Yes preferred master = Yes wins support = Yes printing = CUPS [homes] comment = Home Directories valid users = %S read only = No browseable = No [public] comment = Public Store path = /data/public only guest = yes writable = yes create mask = 0770 directory mask = 0770 [GRP1] comment = Accounting Files path = /data/ucetni #valid users = %G valid users = @GRP1 read only = No create mask = 0770 directory mask = 0770 ================================================================== # rpm -qa | grep samba samba-common-3.0.10-1.4E.11 samba-client-3.0.10-1.4E.11 samba-3.0.10-1.4E.11 -- Petr Klíma e-mail: qaxi(a)seznam.cz

13 18

network redundancy via two nics, two routers?
by Jeff Potter 27 Mar '07

27 Mar '07

Hi List, I'm trying to configure two switches to provide redundancy (i.e. in case one switch goes down), and am wondering if there is a standard way to configure a CentOS box to use different gateways in a bonded interface, depending upon which physical nic is being used? A bit more detail might help answer the "And why do you want to do that?" questions... - Switch 1, Port 1: has an uplink to upstream provider, and is in VLAN-1 - Switch 2, Port 1: has a 2nd uplink to upstream provider, and is in VLAN-1 - Switch 1, Port 25+26 are trunked (link aggregation; depends on your terminology; these are procurve 2600's) and connected to Switch 2, Port 25+26. All vlans configured run on the trunked link, with tagging. - Uplinks to provider are running HSRP. Upstream provider creates a virtual IP (say, 2.2.2.1) that is the gateway to the outside world on one of the links, randomly. - Server A is connected to Switch 1, Port 2 on eth0; and Switch 2, Port 2 on eth1. Server is assigned an IP address, say, 1.1.1.2, inside VLAN-2 (1.1.1.0/24) - Server B, C, etc. exist in different VLANs. (Just saying this so as to avoid the suggestion of "don't use vlans" because that would make this mess go away, but create a security problem.) - Switch 1 does light routing. For VLAN-2, it is listening on, say, 1.1.1.254. - Switch 2 also does light routing. For VLAN-2, it is listening on, say, 1.1.1.253. So, Server A's eth0 should use 1.1.1.254 as its gateway; and Server A's eth1 should use 1.1.1.253 as its gateway. The HSRP link will create 2.2.2.1 and an associated MAC address on one of its links; the two switches will throw the packets to the HSRP link on the correct switch. It doesn't matter which router (1.1.1.254 of 1.1.1.253) is used, since they will both route packets to the appropriate VLAN. If one of the switches goes down, the surviving HSRP link will claim the virtual IP (2.2.2.1) and the switch will receive an arp to let it know to update its arp table. (I've also set mac and arp timeouts to 1 minute.) So, the question remains... is there a way to tell linux that, given a bonded interface, the gateway for one physical nic is X while for a second physical nic it is Y? (Bonding can be active/standby.) (If I had tons of $'s; I would just go buy some Cisco gear that's capable of creating a virtual chassis and be done with this. I don't have tons of $'s. If there are other ways of configuring this; I'd love to know; but from everything I can gather, passing the various VLAN traffic between the two switches (via tagged-VLANs on the interswitch connection) seems the only viable solution. Or should I really be looking at XRRP? Or Stacking? But that's a different list...) How do people normally do this? (This seems too complicated to be right.) best, Jeff

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