How big is the meteorite?

By | Technical | No Comments

Hardware failure is a fact of life when it comes to computers, which is at odds with trying to keep a service running 24/7. No one can guarantee absolute perfect uptime, but it’s possible to get pretty darned close. If you design things solidly and are willing to throw money at the problem, you can […]

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Seven signs of a bad sysadmin

By | Company News, Technical | 3 Comments

The title for this post was originally going to be “things that will get you fired from Anchor”, but we realised they might be more generally applicable and actually more cerebral that they first appear. These aren’t just any old sysadmin WTFs. To be sure, some are serious “what ever made you think that could […]

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Monitor your servers like it’s 1996

By | Technical | No Comments

Whilst I’m a fan of using percentages for my disk space checks, sometimes an explicit size is more appropriate. So, you’d expect the following to work nicely: $USER1$/check_disk -w 5G -c 1G -p /data/foo If you don’t actually test that this works (by artificially filling your disk and seeing what happens), you may be dismayed […]

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I always knew webmin was arse, but this…

By | Technical | No Comments

This is the output of iptables -L on a webmin-managed box I just saw: Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT all — anywhere anywhere ACCEPT all — anywhere anywhere ACCEPT tcp — anywhere anywhere tcp flags:ACK/ACK ACCEPT all — anywhere anywhere state ESTABLISHED ACCEPT all — anywhere anywhere state RELATED ACCEPT […]

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When HA won’t play the way you want it to

By | Technical | No Comments

In an ideal world every service would support High Availability and Load Balancing, would scale up easily and cleanly and all of us systems administrators would be paid bucketloads to play golf all day while the computers did all the hard work. To quote Dylan Moran of Black Books fame, “Don’t make me laugh…bitterly”. I’ll […]

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