Useful RANCID Debugging Tips
I always find it difficult to find a good reference for RANCID debugging strategies and, after spending the afternoon on doing same on one installation, put together my own list. Note that in the...
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We’ve Just Launched TallyStick
Overt at Open Solutions, we manage networks, build Internet infrastructure, consult and develop web applications for many customers. Tracking the time our engineers spent on different projects –...
View ArticleLooking at New Features in PHP 5.4
PHP 5.4 was released at the start of March and heralds a key new feature which I have long bemoaned the lack of: traits. Traits (see PHP’s documentation and Wikipedia’s description) allow programmers...
View ArticleUbuntu 12.04 (Precise Pangolin) and PHP 5.4 (again)
My previous post, Ubuntu 12.04 (Precise Pangolin) and PHP 5.4, has been extremely popular but I left some work for the user to figure out. In a nutshell, here is how you install PHP 5.4 in Ubuntu 12.04...
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Centralised Logging
I’m currently looking at some centralised logging tools and the following stand out: Octopussy – one I cam across a long time ago but looking at some of the others below it may be past its sell by...
View ArticleAnalysing MySQL Slow Query Logs
MySQL has a really useful feature that allows it to log slow queries where slow is a minimum time defined by you in micro seconds. It helps a lot is diagnosing website outages or slow responsiveness...
View ArticleNagios Plugin for Checking Backups via rsnapshot
We’ve just added a check_rsnapshot.php script to our nagios-plugins bundle on Github. This script will verify rsnapshot backups via Nagios using a number of checks / tests: minfiles – checks the number...
View ArticleEnabling External Commands in Nagios / Ubuntu
I get caught by the following quite often (too many Nagios installations!): Error: Could not stat() command file ‘/var/lib/nagios3/rw/nagios.cmd’! The external command file may be missing, Nagios may...
View ArticleBird / Quagga with MD5 Support for IPv4/6 on FreeBSD & Linux
Over in INEX we run a route server cluster which alleviates the burden of setting up bilateral peering sessions for the more than 80% of the members that use them. The current hardware is now about six...
View ArticleVirtual Mail with Ubuntu, Postfix, Dovecot and ViMbAdmin
As part of pushing our new release of ViMbAdmin, I wrote up a mini how-to for setting up a virtual email system on Ubuntu where the components are: Postfix as the SMTP engine; Dovecot for IMAP. POP3,...
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