Asterisk Clustering with DRBD/Heartbeat

Today a friend of mine asked me if I have got any manual for an Asterisk HA setup, so I decided to write this post to share with everyone else.

In this manual, we are using DRBD with Heartbeat on Debian. Feel free to try it on any other linux distro (make sure to do the proper adjustments). Please don’t use the configuration samples here in any production environment, unless you have had it completely tested in your lab.

Scenario:

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