Setting Up PostgreSQL High Availability with Patroni and Ansible

A Comprehensive Guide to Automating PostgreSQL HA with Patroni Using Ansible

Introduction

Patroni is a popular solution for managing PostgreSQL high availability (HA). It simplifies setting up and managing a highly available PostgreSQL cluster by automating failover, replication, and leader election.

Setting Up Patroni for PostgreSQL High Availability

1. Overview:

• Patroni is a cluster manager that uses etcd, Consul, or Zookeeper as a Distributed Configuration Store.
• It manages PostgreSQL nodes and ensures automatic failover, leader election, and replication.

1. Basic Requirements:

• PostgreSQL installed on all nodes.
• Distributed Configuration Store (etcd, Consul, or Zookeeper).
• Patroni installed on each PostgreSQL node.

1. Steps to Set Up:

• Install Patroni: Install Patroni on each node that will participate in the PostgreSQL cluster.
• Configure Distributed Configuration Store: Set up etcd, Consul, or Zookeeper. This store will be used by Patroni to…