Abstract
Everyone needs an RDMBS at some point.
PostgreSQL on Kubernetes#
Almost without fail the author has found it necessary to pause the deployment of whatever new toy it is that’s about to go onto the freshly-installed and clean (so clean) cluster and first get a database up and running due to an unmaintained, or unmentioned, or semi-supported dependency that they would have known about if only they had spent like 15 more minutes reading the docs than they did. Alas, this is the life.
So, for the purposes of this demonstration, the very first workload that we will deploy will be a PostgreSQL RDBMS. For the moment there isn’t anything on the cluster, or plans to put anything on the cluster that would require adding replication to this deployment, but should the cluster develop this requirement this post will be updated with sort-of complete instructions on how to convert the related Helm Chart to one that will support replication.