Preparing systems for repmgr

The repmgr has a few dependencies necessary for it to function optimally, and systems should be provisioned with certain minimal capabilities. This recipe will discuss what these dependencies are and how the servers themselves should be prepared to best facilitate repmgr communication and node management.

Let's get this part done so we can proceed to the really interesting stuff!

Getting ready

At the time of writing this book, the most recent version of repmgr is 5.0. As with Barman, repmgr is available within the PostgreSQL package repositories. If you are using a Debian- or Ubuntu-based system, follow the instructions at https://wiki.postgresql.org/wiki/Apt. This link will provide instructions...