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How To Set Up An Active/Passive PostgreSQL Cluster With Pacemaker, Corosync, And DRBD

Nov 18, 2010, 14:04 (0 Talkback[s])
(Other stories by Rafael Marangoni)

[ Thanks to Falko Timme for this link. ]

"This article explains how to set up (and monitor) an Active/Passive PostgreSQL Cluster, using Pacemaker with Corosync and DRBD. Prepared by Rafael Marangoni, from BRLink Servidor Linux Team.

"Introduction

"We use two nodes, one active (that answers requests from apps) and the other on passive mode. If the active server is down, the passive one will automatically take its position (being the active node).

"1 Preliminary Note

"Linux Distribution:

"We are using the CentOS 5.5 (64bits) distribution, but it will probably work on Fedora (and Red Hat, for sure) as well. The installation of the CentOS is very simple and classical, select the base packages and other stuff that you like/need. One issue that must be remembered is that we use DRBD to replicate the PostgreSQL data between the nodes, then you'll need to have a disk or partition exclusive to DRBD. Remember this before partitioning disks on CentOS installation."

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