Posts tagged sysadmin

HOWTO install etherpad on ubuntu 9.10

Mar 2nd

Posted by matthew in Technical HOWTOs

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Etherpad was opensourced by google, and has some generic installation instructions. Here’s the translation for Ubuntu Karmic Koala (release 9.10):

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How to fix your ubuntu 9.10 console

Nov 28th

Posted by matthew in Technical HOWTOs

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After upgrading my server (that isn’t running X) to Ubuntu 9.10 (Karmic Koala), I found that the console on my LCD monitor was cropping out several characters from the left and right sides. It wasn’t hard to fix, though, given the magick incantations:

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DegradedArray event on /dev/md0:gronk

Apr 3rd

Posted by matthew in Technical HOWTOs

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Due to an unscheduled powercycle on my linux server, I got a very troubling page from mdadm, the multi-disk administrator, saying it had marked one of the disks as failed.

This, presumably, was due to a flaky SATA controller that didn’t make /dev/sda available by the time the kernel was mounting /dev/md0, so software raid turned it off.

It was easy enough to get the drive back into play:

sudo mdadm /dev/md0 --add /dev/sda1

And easy enough to monitor progress:

mrm@gronk:~$ cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sda1[3] dm-2[1] dm-1[0]
580074880 blocks level 5, 64k chunk, algorithm 2 [3/2] [UU_]
 [====>................]
recovery = 22.0% (63875072/290037440)
finish=178.1min speed=21154K/sec
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