Using repmgr
As said before, replication is great provided it works. It works well if it's understood and works even better if it's tested. This is a great reason to use repmgr utility.
The repmgr utility 3.3 is an open source tool designed specifically for PostgreSQL replication. To get additional information about repmgr, visit http://www.repmgr.org/.
The repmgr utility provides a command-line interface and a management process (daemon) used to monitor and manage PostgreSQL servers involved in replication. The repmgr utility easily supports more than two nodes, with automatic failover detection.
Getting ready
Install repmgr utility from binary packages on each PostgreSQL node.
Set up replication security and network access between nodes according to the Setting up streaming replication security recipe.
How to do it...
The repmgr utility provides a set of single command-line actions that perform all the required activities on one node:
- To register the current master with
repmgr, use the following...
