Monthly Archives: January 2014

Adding new data sources to existing RRDs

Posted on January 23, 2014 by j mozdzen

Tobi Oetiker’s RRD tool (“round-robin database”) is a very powerful and really useful tool set to store long-term monitoring data. The only feature it lacks out of the box is adding new “data sources” to an existing database.

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Pacemaker support for live migration of dependent resources

Posted on January 22, 2014 by j mozdzen

As I had reported over a year ago, up to now it was not possible to use Pacemaker to properly manage resources that both resolve dependencies of other resources and can be migrated live to another node of your cluster. … Continue reading →

Posted in Linux, Pacemaker, Xen | Leave a comment

Linux initrd command line

Posted on January 5, 2014 by j mozdzen

Have you ever come across the situation where your Linux boot would not mount the root file system, dropping you to a command prompt during initrd processing? Until recently, I didn’t have to deal with this situation too much and … Continue reading →

Posted in howto, Linux | Leave a comment