Scale Percona Distribution for PostgreSQL on Kubernetes and OpenShift

One of the great advantages brought by Kubernetes and the OpenShift platform is the ease of an application scaling. Scaling an application results in adding or removing the Pods and scheduling them to available Kubernetes nodes.

Size of the cluster is dynamically controlled by a pgReplicas.REPLICA-NAME.size key in the Custom Resource options configuration. That’s why scaling the cluster needs nothing more but changing this option and applying the updated configuration file. This may be done in a specifically saved config, or on the fly, using the following command:

$ kubectl scale --replicas=5 perconapgcluster/cluster1

In this example we have changed the number of PostgreSQL Replicas to 5 instances.

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