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Re: [CentOS] CentOS 6.4 in the making perhaps?
by Johnny Hughes 01 Mar '13

01 Mar '13

On 02/28/2013 02:31 AM, Sorin Srbu wrote: > I see Johnny Hughes has released CR-updates for CentOS 6. > > Is CentOS 6.4 brewing yet then? 8-) Eventually, yes ... thats how it goes, right? We are working on the consolidated tree, spinning isos, QA'ing those, etc. CR is for access now, for those what want it ... the tree should be along soon. Not exactly sure when soon will be yet :)

2 1

Reorg of a RAID/LVM system
by Harold Pritchett 01 Mar '13

01 Mar '13

I have a system with 4 disk drives, two 512 Gb and two 1 Tb. It look like this: CentOS release 5.9 (Final) Disk /dev/sda: 500.1 GB, 500107862016 bytes Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes Disk /dev/sdc: 500.1 GB, 500107862016 bytes Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes ================================================================= Disk /dev/sda: 500.1 GB, 500107862016 bytes 16 heads, 63 sectors/track, 969021 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 1985 1000408+ fd Linux raid autodetect /dev/sda2 1986 9923 4000752 82 Linux swap / Solaris /dev/sda3 9924 969021 483385392 fd Linux raid autodetect Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 * 1 125 1004031 fd Linux raid autodetect /dev/sdb2 126 624 4008217+ 82 Linux swap / Solaris /dev/sdb3 625 121601 971747752+ fd Linux raid autodetect Disk /dev/sdc: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 1 125 1004031 fd Linux raid autodetect /dev/sdc2 126 4096 31897057+ 82 Linux swap / Solaris /dev/sdc3 4097 60801 455482912+ fd Linux raid autodetect Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 * 1 125 1004031 fd Linux raid autodetect /dev/sdd2 126 624 4008217+ 82 Linux swap / Solaris /dev/sdd3 625 121601 971747752+ fd Linux raid autodetect The four 1 GB partitions (sd[abcd]1) are configured as a RAID 1 array with a single ext4 filesystem mounted as /boot. Swap is Swap... the two smaller drives (sd[ac]3) partitions are configured as a RAID 1 array containing an LVM physical volume (md1). the two larger drives (sd[bd]3) are configured as a RAID 1 array containing an LVM physical volume (md2). # pvdisplay --- Physical volume --- PV Name /dev/md1 VG Name vg0 PV Size 434.38 GB / not usable 7.44 MB Allocatable yes PE Size (KByte) 32768 Total PE 13900 Free PE 7810 Allocated PE 6090 PV UUID z5QGpO-6bKP-k8xm-vUha-CWYj-dkjG-UaHAE5 --- Physical volume --- PV Name /dev/md2 VG Name vg0 PV Size 926.73 GB / not usable 12.31 MB Allocatable yes (but full) PE Size (KByte) 32768 Total PE 29655 Free PE 0 Allocated PE 29655 PV UUID RIliNF-SENU-O2S9-Qo4H-rtOC-2Yzr-7jzuB0 The two physical volumes are defined as a single volume group. # vgdisplay --- Volume group --- VG Name vg0 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 17 VG Access read/write VG Status resizable MAX LV 0 Cur LV 10 Open LV 10 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.33 TB PE Size 32.00 MB Total PE 43555 Alloc PE / Size 35745 / 1.09 TB Free PE / Size 7810 / 244.06 GB VG UUID dKKD3L-pcHy-F8KQ-6qNX-vFye-tXdv-6Qs98W One of the 512 Gb drives is failing. What I want to do is to replace the two 512 Gb drives with 3 Tb drives, expand the RAID array on them and then expand the LVM PV contained therein. This much I can do. I then want to move all of the date from the other PV into this one, and remove the second PV, RAID array, and the two 1 Tb drives, leaving me with two 3 Tb drves, a large RAID array and a single PV containing everything (except the /boot and SWAP partitions.) What I'm not sure about is how to move the date from the second PV to the first so I can then delete the contents of the drive and physically remove them from the system leaving me with only the two 3 Tb drives. Help! Thanks Harold

2 1

Newer SANE packages for 5.9 ??
by fred smith 01 Mar '13

01 Mar '13

I just got a Canon Canoscan LiDE 210 scanner, which the SANE project pages say works "completely" with Sane. but what isn't obvious without a lot of digging is that the version of Sane in EL5 isn't new enough. it works fine with what's on my eeepc (Fedora 17) but not Centos 5.9. I've been messing around with building sane from source, but have not been fully successful, yet, so thought before butchering my system any further I should ask if anyone has (or can point me to) newer Sane packages for EL5?? Thanks! Fred -- ------------------------------------------------------------------------------- Under no circumstances will I ever purchase anything offered to me as the result of an unsolicited e-mail message. Nor will I forward chain letters, petitions, mass mailings, or virus warnings to large numbers of others. This is my contribution to the survival of the online community. --Roger Ebert, December, 1996 ----------------------------- The Boulder Pledge -----------------------------

3 6

drbd and el6
by John R Pierce 28 Feb '13

28 Feb '13

hey, I have an application for drbd replication between a pair of EL6 servers, and I just realized that drbd is no longer built in. googling found me this blog on doing it using ElRepo distributions... http://www.broexperts.com/2012/06/how-to-install-drbd-on-centos-6-2/ is that still best practice? or is there a better distribution? or really... my application is a BackupPC server replicating its backup volume to a standby server (hey, no backup is really a backup, unless there is a backup of the backup, right?). is there a better/alternate way of maintaining a mirror of a backupPC volume than drbd... the backup volume is initially 8TB and could well grow to 3 times that over time. its stored on an XFS file system, under LVM, on striped raid6 volumes. -- john r pierce 37N 122W somewhere on the middle of the left coast

10 14

remote logging with rsyslog
by Nelson Green 28 Feb '13

28 Feb '13

This is a similar post to one I've made on the rsyslog list that has received no responses after four days, so I figured I'd try here since the problem seems to be CentOS specific. This is also my second attempt to send it to this list as the first seems to have never showed up. I am trying to test remote logging between two CentOS 6.3 systems and unable to get the client logs to show up on the server, using the RELP module. First of all, the client is a stock install of CentOS 6.3 running rsyslog v5.8.10. I inherited the server, but the change logging that we keep indicates it is pretty much stock too, and it is v5.8.10 as well. On the server, I added to /etc/rsyslog.conf: $ModLoad imrelp $InputRELPServerRun 20514 And restarted the daemon: sudo service rsyslog restart Shutting down system logger: [ OK ] Starting system logger: [ OK ] On the client, I added to /etc/rsyslog.conf: $ModLoad omrelp $WorkDirectory /var/spool/rsyslog $ActionQueueType LinkedList $ActionQueueFileName syslogfwd $ActionQueueMaxDiskSpace 10g $ActionResumeRetryCount -1 $ActionQueueSaveOnShutdown on *.* :omrelp:xxx.xxx.xxx.xxx:20514 And restarted the daemon: sudo service rsyslog restart Shutting down system logger: [ OK ] Starting system logger: [ OK ] Nothing ever showed up on the server, so I started going through the troubleshooting steps, which includes running the client in foreground mode and logging debug output: sudo service rsyslog stop sudo /sbin/rsyslogd -dn > /tmp/rsyslog.debug However, as soon as the service started in the foreground, log entries began showing up on the server. But when I stop the foreground service and restart it as a background service, the log entries quit showing up at the server. I can change things around so that tcp is used instead of RELP, and everything works that way. The problem is specific to using RELP in the normal background mode. I also tested the above RELP configuration on two Debian Wheezy boxes, each running rsyslog v5.8.11, and everything worked as expected. So the problem seems to be specific to CentOS with RELP. Has anyone gotten this to work on CentOS? Thanks, Nelson

2 5

Re: [CentOS] CentOS 6.4 in the making perhaps?
by Nux! 28 Feb '13

28 Feb '13

On 28.02.2013 08:31, Sorin Srbu wrote: > I see Johnny Hughes has released CR-updates for CentOS 6. > > Is CentOS 6.4 brewing yet then? 8-) https://www.youtube.com/watch?v=N9lbCrjqMKw -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro

3 2

CentOS 6.4 in the making perhaps?
by Sorin Srbu 28 Feb '13

28 Feb '13

I see Johnny Hughes has released CR-updates for CentOS 6. Is CentOS 6.4 brewing yet then? 8-) -- BW, Sorin ----------------------------------------------------------- # Sorin Srbu [Sysadmin, Systems Engineer] # Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 >3 signals> GSM # Div of Org Pharm Chem, Mobile: +46 (0)70-4250229 # Box 574, Uppsala University, Fax: +46 (0)18-4714482 # SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b # Web: http://www.orgfarm.uu.se ----------------------------------------------------------- # () ASCII ribbon campaign - Against html E-mail # /\ # # This message was not sent from an iProduct! # # MotD follows: # CentOS: In Service.

1 0

hp1213nf mfp printer driver in centos6.2
by Asok Mallick 28 Feb '13

28 Feb '13

Dear Sir, Please know me how to function hp 1213nf mfp printer (printer + scanner + fax + copy) in centOS 6.2. The computer shows the printer but cannot oprate. the message displayed "Missing printer driver" etc. This will be very helpful to me if anyone can inform me the technique to operate this printer in centOS 6.2. Thanking you, Yours faithfully, Asok mallick.

3 3

Samba authentication against 389 DS
by Todor Petkov 28 Feb '13

28 Feb '13

Hello, I am using Centos 6 with 389 DS. Everything is working, I can authenticate my users against it etc. Now I am trying to make Samba authenticate against the LDAP by following http://directory.fedoraproject.org/wiki/Howto:Samba However, it seems that Samba does not read the 'password' value, but 'sambaNTPassword'. I wrote in 389-DS mailing list and they said, that there is no way to make Samba read the 'password'. So I must end with two password (Samba and "normal" one). I can not sync them, since crypt algorithms are different and I can not just copy/paste the password to sambaNTPassword. Did someone else had this issue? I need some file sharing software (can be even a web application), which can authenticate against LDAP, so all the people have one password for authentication. Regards,

4 7

VNC server not reponding to external requests
by Neil Aggarwal 28 Feb '13

28 Feb '13

Hello everyone: I tried following the instructions on this page to set up a VNC server: http://wiki.centos.org/HowTos/VNC-Server I can telnet to port 5901 from the machine itself: # telnet 127.0.0.1 5901 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. RFB 003.008 But, when I try to connect to it from the outside world, I get a connection timeout. My /etc/sysconfig/vncservers file does not have the -nolisten tcp nor the -localhost options so it should be configured to accept outside connections. Is there some default setting in the vncserver that I need to change to allow outside connections? Thanks, Neil -- Neil Aggarwal, (972)834-1565, http://UnmeteredVPS.net/centos Virtual private server with CentOS 6 preinstalled Unmetered bandwidth = no overage charges

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