GruCloud Module for Postgres on K8s

This module defines the kubernetes resources required to run a Postgres database.

Config

The config.js file gathers the configuration for this module.

Resources

This module exports 3 kubernetes resources through the createResources function from the iac.js file.

ConfigMap

Define variables for the StatefulSet: username, database name and password.

StatefulSet

Define the postgres stateful set:

• image name, version and port
• readinessProbe and livenessProbe using the psql command to find out if the database is up and running
• persistent volume claim to set the size of the disk.

Service

A headless service forwards traffic to the postgres database. The idea behind using a headless service is to get a unique dns entry that can be referenced by the backend and other (micro)services.

Usage

This module is being used in the following projects:

• this example
• starhackit