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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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 ArticleMonitoring SSL Certificate Expiry Dates with Nagios
It is good practice to separate Nagios checks of your web server being available from checking SSL certificate expiry. The latter need only be run once per day and should not add unnecessary noise to a...
View ArticleAdventures with LDAP (OpenLDAP) – SSL, Multi-Master Replication and Monitoring
In my career to date, I successfully managed to avoid all but the periphery engagement in OpenLDAP. Until recently that is – we had to build a Microsoft Exchange like environment with open source...
View ArticleNagios / Icinga Alerts via Pushover
I came across Pushover recently which makes it easy to send real-time notifications to your Android and iOS devices. And easy it is. It also allows you to set up applications with logos so that you can...
View ArticleMonitoring LDAP – Example with Munin
Following up from my articles on Creating an LDAP Addressbook / Directory, then Securing LDAP with TLS / SSL and Multi-Master LDAP Replication; I’ll now look at monitoring LDAP with Munin as an...
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