MySQL High Availability Cluster with ProxySQL and Orchestrator

This setup provides a fault-tolerant MySQL cluster using Percona Server, ProxySQL for load balancing, and Orchestrator for automatic failover.

Architecture

• 3x Percona Server 8.0.42-33: 1 Master + 2 Read-Only Slaves
• 1x ProxySQL 2.4.8: Load balancer and connection pooler
• 1x Orchestrator 3.2.6-9: Automatic failover management

Quick Start

1. Clone/create the directory structure with all configuration files

2. Start the cluster:

   docker-compose up -d

3. Run the setup script that create the cluster:

   ./bootstrap/setup.sh

4. Test the cluster:

• Below script shutdown the cluster for 30 seconds to show that master failure and slave is promoted automatically

  ./tests/1-master-stop-start.sh

• Below script on master recovery rejoins as slave. It can be done maybe with hooks but for the test puruses implemented like this

  ./tests/2-rejoin-old-master.sh