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Re:[CentOS] xen save/restore causes cron to hang
by Vladislav Rusanov 12 Nov '08

12 Nov '08

Joe Pruett wrote: > i haven't found anything online to talk about this, so maybe i've got > something odd going on here. i have my xen set up to save/restore on dom0 > reboot. almost everything works fine, but cron on the guest os'es > (everything is centos 5 x86_64) stop processing jobs. i'm guessing it is > missing an alarm or something like that. anyone else see this? I have the same problem. Anybody solved it? Regards!

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bonding theory question
by Mag Gam 12 Nov '08

12 Nov '08

Hello All, I am currently using bonding with 2 NICs (using mode 0). Its been working well, but I am trying to understand how it works (I am a total newbie). mode=0 (balance-rr) Round-robin policy: Transmit packets in sequential order from the first available slave through the last. This mode provides load balancing and fault tolerance. So I have 2 NICs (1 NIC attached to switch A, 2nd NIC attached to switch B). I have 1 virtual interface. bon0. Suppose data is being pushed out, it will go with 1st NIC and when it gets overloaded it will use 2nd NIC. The bonding driver will be responsible for it. Similar to the push, the pull will be very similar. The data gets pulled and the bonding driver will assemble the packets together? Does this sound right? Sorry for a newbie question... TIA

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Autodetecing RAID members upon boot... need to update initrd?
by Tim Nelson 11 Nov '08

11 Nov '08

Hello fellow CentOS'ers- I've got a system running CentOS 5.0. The motherboard has two onboard SATA ports with two drives attached. I installed the system on a RAID1 setup. However, I'd like to add a hotspare disk to the array. Since there are no additional SATA ports, I've installed an additional controller. After partitioning, the additional drive was easily and successfully added to the existing array as a spare. However, the problem is when the system boots. The hotspare disk is never detected and added to the array. I believe it could be due to the driver for the addon card not being in the initrd? If I run 'fdisk -l', I see this: ---BEGIN--- Disk /dev/sda: 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/sda1 * 1 13 104391 fd Linux raid autodetect /dev/sda2 14 523 4096575 fd Linux raid autodetect /dev/sda3 524 60801 484183035 fd Linux raid autodetect Disk /dev/sdb: 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/sdb1 * 1 13 104391 fd Linux raid autodetect /dev/sdb2 14 523 4096575 fd Linux raid autodetect /dev/sdb3 524 60801 484183035 fd Linux raid autodetect Disk /dev/md2: 495.8 GB, 495803301888 bytes 2 heads, 4 sectors/track, 121045728 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md2 doesn't contain a valid partition table Disk /dev/md1: 12.5 GB, 12584288256 bytes 2 heads, 4 sectors/track, 3072336 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md1 doesn't contain a valid partition table Disk /dev/md0: 106 MB, 106823680 bytes 2 heads, 4 sectors/track, 26080 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md0 doesn't contain a valid partition table 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 13 104391 fd Linux raid autodetect /dev/sdc2 14 523 4096575 fd Linux raid autodetect /dev/sdc3 524 60801 484183035 fd Linux raid autodetect ---END--- If my assumptions are correct, the onboard drives are detected first, then the arrays assembled, and after the system has passed control from the initrd to boot, THEN the addon controller is detected and hence the third drive (sdc). If I am correct, then I need to update my initrd for the system to see and use that third drive during the boot process. Can anyone lend a few tips or pointers on how to proceed? I essentially need the sata_sil driver to be included in the initrd. All tips welcome. Thank you! Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105

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Can expect do this?
by Fajar Priyanto 11 Nov '08

11 Nov '08

Hi all, I'm trying to scp some files from machine1 to machine2. But, I'm in an environment where PubKeyAuthentication is not allowed in ssh :( So, I'm confused how to automate it as cronjob. However, I read somewhere that we can write a little bash script that will utilize 'expect' to answer for the ssh password prompt? Can we do this? Any examples are great help. Thank you.

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Sync of csgfs and current centos 4 updates
by Aliet Santiesteban Sifontes 11 Nov '08

11 Nov '08

Hi list, I've been trying to update my csgfs stuff to 4.7 this week but I notice that current csgfs is built against kernel-2.6.9-78.0.1 and is required as a dependence, right now current kernel is 2.6.9-78.0.5 it would be great if csgfs can be rebuilt or updated to this, so dependences works ok??? Best regards

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Re: [CentOS] Reinstalled Windows and GRUB - Cannot boot Linux - SOLVED
by Lanny Marcus 11 Nov '08

11 Nov '08

On Mon, Nov 10, 2008 at 4:32 PM, MHR <mhullrich(a)gmail.com> wrote: > On Mon, Nov 10, 2008 at 12:58 PM, Lanny Marcus <lmmailinglists(a)gmail.com> wrote: <snip> >> Question: Is /hda3 mounted properly? I don't think so, because when I >> try to boot Linux from the Grub menu on the HD, it gives me "Error 17: >> Cannot mount selected partition" > Someone just answered earlier in this thread that you need to change > your hd(0,2) to hd(0,1) on the grub boot line. That should work. You > don't need to do this from any special rescue boot, just boot the > system, and when the grub stage 2 boot selection shows with its > countdown, stop it (with the space bar) and use the grub shell to edit > that line and it _should_ boot properly. Mark (MHR) and the earlier responder who previously mentioned to change to "root (hd0,1)" in the GRUB boot menu. A_SPECIAL_THANK_YOU! That got me into CentOS5.2.... :-) I did notice an error message, when the box was booting, "mounting local filesystems failed" but I think that has to do with mounting the NTFS partition, which I will fix in /etc/fstab after I send this message. > If WCTW, instead of downloading the CentOS 5 DVD, just pull down the > first CD image and burn that. It's a lot shorter than the whole DVD, > and it's all you need to get into rescue mode. OK. I will download the first CD, but not tonight, since my CentOS 5 Installation DVD is now toast. I ran into this problem, Saturday afternoon, and the list is very slow on weekends and then our ADSL went down, because there was a bad card in the phone company Router or some other HW in our subdivision. To everyone who replied, THANK YOU! Lanny

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CentOS Live CD for System Rescue - How to get full root access to HD?
by Lanny Marcus 11 Nov '08

11 Nov '08

Booting from the CentOS 5.2 Installation DVD (or the first Installation CD), one can type "linux rescue" and then "chroot /mnt/sysimage" and have full root access to the OS on the HD. For future reference, I would like to know what I did wrong, the past couple of days, when trying to use the CentOS 5.2 i386 Live CD, for rescue. From a terminal, "su -" did not seem to get me root access to the hard drive. What command should I have used, with the Live CD? The access I had was read only. (As it turns out, I could have fixed the problem, without the LiveCD, but I didn't know that, 3 days ago.... :-) ) TIA. Lanny

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rdiff-backup update broken?
by Mike 11 Nov '08

11 Nov '08

After the recent yum update to rdiff-backup-1.2.2-1.el5.rf rdiff-backup no longer works. I don't "speak" python so not sure what's going on. Here's a portion of what I'm seeing... # rdiff-backup /etc/ /backup/localhost/etc Exception '[Errno 34] Numerical result out of range' raised of class 'exceptions.IOError': File "/usr/lib64/python2.4/site-packages/rdiff_backup/robust.py", line 32, in check_common_error try: return function(*args) File "/usr/lib64/python2.4/site-packages/rdiff_backup/rpath.py", line 1123, in append return self.__class__(self.conn, self.base, self.index + (ext,)) File "/usr/lib64/python2.4/site-packages/rdiff_backup/rpath.py", line 868, in __init__ else: self.setdata() File "/usr/lib64/python2.4/site-packages/rdiff_backup/rpath.py", line 893, in setdata if self.lstat(): self.conn.rpath.setdata_local(self) File "/usr/lib64/python2.4/site-packages/rdiff_backup/rpath.py", line 1470, in setdata_local if Globals.eas_conn: rpath.data['ea'] = ea_get(rpath) File "/usr/lib64/python2.4/site-packages/rdiff_backup/eas_acls.py", line 584, in rpath_ea_get ea.read_from_rp(rp) File "/usr/lib64/python2.4/site-packages/rdiff_backup/eas_acls.py", line 74, in read_from_rp try: self.attr_dict[attr] = rp.conn.xattr.getxattr(rp.path, attr, rp.issym()) Anyone else use rdiff-backup? Or any thoughts? -- Thanks, Mike

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Kernel compilation problems
by Test 11 Nov '08

11 Nov '08

All, I am trying to build a custom kernel, following the howto and some stuff i found on the forums (mkspec.patch) 1. the mkspec.patch gives an error: [root@centos linux]# patch -p1 < mkspec.patch (Stripping trailing CRs from patch.) patching file scripts/package/mkspec Hunk #1 succeeded at 103 with fuzz 2 (offset 22 lines). Hunk #2 FAILED at 115. 1 out of 2 hunks FAILED -- saving rejects to file scripts/package/mkspec.rej 2. When i create an rpm out of the standard configfile (/boot/config....) the RPM file created is about 100mb which to me seems a bit large...? -- Test <test(a)remedial-teacher.nl>

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nagios command-plugins: unexpected token
by Marcelo M. Garcia 11 Nov '08

11 Nov '08

Hi I just installed nagios et al[1] in my Centos-5.2 (x86). When I try to test the configuration file it fails[2] with the message "Unexpected token or statement(...)". The line is: command[notify-by-email]=/usr/bin/printf "$OUTPUT$" | /bin/mail -s '$SERVICESTATE$ alert for $HOSTALIAS$/$SERVICEDESC$' $CONTACTEMAIL$ But if I comment this line, then I got the same message in the next line. I changed the path to printf, because I already have installed. Is something missing? Are the rpm's enough? Thanks Marcelo [1] newt (Linux) $rpm -qa | grep nagios nagios-plugins-1.4.12-1.el5.rf nagios-3.0.5-1.el5.rf nagios-plugins-setuid-1.4.12-1.el5.rf nagios-nsca-2.7.2-2.el5.rf nagios-devel-3.0.5-1.el5.rf nagios-nrpe-2.5.2-1.el5.rf nagios-nsca-client-2.7.2-2.el5.rf newt (Linux) $ [2] [root@newt nagios]# nagios -v nagios.cfg Nagios 3.0.5 Copyright (c) 1999-2008 Ethan Galstad (http://www.nagios.org) Last Modified: 11-04-2008 License: GPL Reading configuration data... Error: Unexpected token or statement in file '/etc/nagios/objects/command-plugins.cfg' on line 33.

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