Discuss October 2011

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186 participants
146 discussions

raid on large disks?
by Les Mikesell 12 Oct '11

12 Oct '11

What's the right way to set up >2TB partitions for raid1 autoassembly? I don't need to boot from this but I'd like it to come up and mount automatically at boot. -- Les Mikesell lesmikesell(a)gmail.com

4 10

Scp and SFTP speed much difference???
by mcclnx mcc 12 Oct '11

12 Oct '11

we have CENTOS 5.X on server A and Server B. Both servers have Gigabit network card connect to same switch. I test network speed from Server A to Server B and found speed much difference: SFTP: 42 MB/Sec SCP: 20 MB/sec SCP command: scp -Crp -o CompressionLevel=1 user1@ServerB:/TMP/File1 . Anyone know how to improve SCP speed?

2 1

Install Centos on remote machine?
by Marko Weber 12 Oct '11

12 Oct '11

hello , i have to an remote server contact via rescue console. How can i install centos there without any image or cd? with gentoo i untar a stage3 tarball and latest portage , baking kernel - go! (shortversion) but how to do this with centos? i gooled last hour but only find howtos with cd / dvd. the remote server i can only contact via kvm or rescue console. any ideas? marko

3 2

debuginfo repo missing??
by fred smith 12 Oct '11

12 Oct '11

http://debuginfo.centos.org/6 exists, but is empty. Does anyone here know when or even if it will ever be populated? Thanks! -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- The Lord detests the way of the wicked but he loves those who pursue righteousness. ----------------------------- Proverbs 15:9 (niv) -----------------------------

2 2

Emergency help needed on host network randomly stop working.
by Magicloud Magiclouds 12 Oct '11

12 Oct '11

Hi, This is a Centos 5.5 host with one xen guest. About 2 weeks ago, the host randomly lost network connection. By this I mean I could not connect to the services on it, or ping it. Also was the status of the guest. From serial console, I connected to the host, trying to see what happened. No clue (any error messages) in messages or dmesg. ifdown/ifup the interface did not help, either. Only rebooting was my only choice. Searching through Google, I got the information that some other guys met similar problem, and resolved by setting stp on with the bridge interface. I set it, too. And the problem still occurs. Any idea what I should check now? Thanks. -- 竹密岂妨流水过山高哪阻野云飞

3 2

Mock - Problems building Centos5 package on Centos6 - where can I ask for advice ?
by Morgan Cox 12 Oct '11

12 Oct '11

Hi. I am trying to use Mock to rebuild a .src.rpm file I have made for PHP 5.3.8 (for Centos6) I have managed to install deps fine with mock. When I try to rebuild the package though I get. (from build.log) --------------------------------------------------------------------------------------------------------- + cat /usr/share/aclocal/libtool.m4 /usr/share/aclocal/ltoptions.m4 /usr/share/aclocal/ltsugar.m4 /usr/share/aclocal/ltversion.m4 /usr/share/aclocal/lt~obsolete.m4 cat: /usr/share/aclocal/ltoptions.m4: No such file or directory cat: /usr/share/aclocal/ltsugar.m4: No such file or directory cat: /usr/share/aclocal/ltversion.m4: No such file or directory cat: /usr/share/aclocal/lt~obsolete.m4: No such file or directory RPM build errors: error: Bad exit status from /var/tmp/rpm-tmp.90639 (%build) Bad exit status from /var/tmp/rpm-tmp.90639 (%build) Child returncode was: 1 EXCEPTION: Command failed. See logs for output. # ['bash', '--login', '-c', 'rpmbuild -bb --target x86_64 --nodeps builddir/build/SPECS/php.spec'] Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/mock/trace_decorator.py", line 70, in trace result = func(*args, **kw) File "/usr/lib/python2.6/site-packages/mock/util.py", line 328, in do raise mock.exception.Error, ("Command failed. See logs for output.\n # %s" % (command,), child.returncode) Error: Command failed. See logs for output. # ['bash', '--login', '-c', 'rpmbuild -bb --target x86_64 --nodeps builddir/build/SPECS/php.spec'] LEAVE do --> EXCEPTION RAISED --------------------------------------------------------------------------------------------------------- (I can post the full build.log if needed) If this is not the correct place to ask about this can someone point me where I can ask ? Many regards

4 8

Inbuilt Bisoncam NB Pro webcam is not detected in CentOS 6
by balajisundar 12 Oct '11

12 Oct '11

Sir, Recently i have buy a HCL ME Laptop with inbuilt webcam support. I have installed the CentOS 6 and its not detected the Bisoncam NB Pro webcam. Is there any driver is required, if its required please send me the driver download link and installation steps. Regards -S.Balaji

3 6

yum update
by Damas Ally 12 Oct '11

12 Oct '11

Greetings, Can anyone help me on how to fix this problem? when i run yum update from CLI i got this one [root@ict ~]# yum update Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: sunsite.rediris.es * extras: sunsite.rediris.es * updates: sunsite.rediris.es .... .... ... .. ---> Package python-libs.x86_64 0:2.4.3-44.el5_7.1 set to be updated http://mirror.centos.org/centos/5/addons/x86_64/repodata/filelists.xml.gz: [Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')> Trying other mirror. Error: failure: repodata/filelists.xml.gz from addons: [Errno 256] No more mirrors to try. You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest >From there i tried those options but still i cant update. Centos 5.5 thanks -- "If opportunity doesn't knock, build a door". Says, Makweba Sir

4 8

Odd issue with C6 and NIS
by James A. Peltier 11 Oct '11

11 Oct '11

I seem to have this very odd issue with CentOS 6 WRT NIS. I have taken the package selection that I used with CentOS 5 and basically plopped it into my C6 kickstart file (see below). On C5 this works just fine and I'm able to log in with NIS credentials just fine. However, it looks like on C6 if you use a package selection like this, you also need to specify the yp-tools package as part of the kickstart *even though* you specify an authentication method of NIS in the kickstart. Seems like a bug to me?!? auth --useshadow --enablemd5 --enablenis --nisdomain test --nisserver yp.example.com %packages @core augeas autofs dstat nfs-utils ntp openssh openssh-clients openssh-server portreserve puppet redhat-lsb rsh-server sendmail sendmail-cf sudo sysstat tcp_wrappers wget xinetd yum-utils %end -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpeltier(a)sfu.ca Website : http://www.sfu.ca/itservices http://blogs.sfu.ca/people/jpeltier I will do the best I can with the talent I have

12 39

Deciding when to do system encryption
by Bade Iriabho 11 Oct '11

11 Oct '11

Hello All, I have read that system encryption slows a computer down. However, I am more interested in when to use it. Consider the following scenarios: 1. You have a server in a secured server room on a rack (is there any need and advantage to having system encryption in this particular case) 2. you have a server sitting in an office that is accessible by everyone 2. You have a desktop 3. You have a laptop So my questions are: What situations/scenarios do you consider before implementing system encryption? I guess at the end of the day, I am trying to figure out the best practices. Regards, B.I.

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Discuss October 2011