Sunday, April 29, 2012

finally disabled old server

When the SaiUniti FS3 was restarted, our old Colinux service as well as the ShoutCast servers started running on it again, as I found with the Colinux auto email on reboot, since they were set to automatic startup. So, logged in to the server, disabled the automatic startup of all the shoutcast services + colinux on that server.

Thursday, April 26, 2012

regressive feature on Mac OS X Lion

Yesterday DSP came with his MacBook to reinstall Microsoft Office to solve a bug as instructed by "experts" at Applecare Australia. Long procedure to uninstall, and after reinstalling, a longer time to download and install all updates. And finally, at the end, his problem remained. His issue was that even after he releases the SHIFT key, the next letter would be capitalized. Now, this is actually a "feature" of Mac OS X Lion, carried over from iOS - demonstrated by typing something in TextEdit. But it does create problems for those who type moderately fast.

monitoring apache server

A couple of days back, we were caught left-footed when our website slowed down to a crawl. The "standard practice" of restarting the process, restarting networking, even rebooting the server, did not help. Later, found that the problems were due to a 500 MB + flipbook uploaded the previous night, with a link on the home page.

Voxel support had pointed to
apache2ctl -t
as a possible first test, to see if apache was able to start with the config given. Did some googling and found this optimization and tuning page, which has some sections relevant for our static website also. In particular, the part where he says use
apache2ctl status
top d 1
to monitor apache's health.

These discussions also provide some tips on monitoring swapping, disk thrashing, io bottlenecks etc using vmstat, top, iotop and so on. This page has a good description of vmstat and free, what the displays mean etc.

Monday, April 16, 2012

preventing saiwaves disk from filling up

PB reports:

automysqlbackup script runs on Krishna and takes a backup into ~/dbBackups on krishna
The cron on saiwaves takes a copy of the backup into saiwaves through

Changed the scp to copy only the daily folder instead of the entire backups folder. Also, changed destination to /local instead of ~

/local has about 200+ GB free

Hope this resolves the issue.

Saturday, April 07, 2012

error running our import script

While running our file import script, got an error,
error while loading shared libraries: cannot open shared object file: No such file or directory
Sorry response not recoginsed...
Turned out it was because there was a wav file in the import folder. Removed the wav file, the import script ran fine.