Mastering PostgreSQL High Availability | Udemy

High Availability is the beating heart of enterprise PostgreSQL systems. In this practical, hands-on course, you’ll learn to design, build, and manage a fault-tolerant PostgreSQL environment using streaming replication, repmgr, and automatic failover.

You’ll work directly with PostgreSQL 17 on Linux (RHEL/CentOS/Oracle Linux 9), simulating real data-center conditions. Whether you’re a DBA, DevOps engineer, or architect, this course will teach you exactly how to prevent downtime and ensure database resilience.

What You’ll Learn

Configure primary and standby servers for streaming replication
Set up repmgr for cluster management and automatic failover
Perform live failover and switchover tests
Manage replication slots, WAL archiving, and monitoring
Troubleshoot replication lag and cluster recovery
Understand synchronous vs asynchronous replication
Build production-ready HA architecture for PostgreSQL 17

This course will provides a step-by-step process to configure streaming replication in PostgreSQL 17 using asynchronous mode between two virtual machines. It includes system configuration, PostgreSQL installation, repmgr setup, and replication verification.

Course Sections (Proposed Structure)

1. Introduction to High Availability Concepts
2. PostgreSQL Installation & Environment Setup
3. Streaming Replication in Depth
4. repmgr Installation & Configuration
5. Failover & Switchover Management
6. Monitoring & Troubleshooting HA Clusters
7. Enterprise-Level HA Architecture Design
8. Final Demo: Real-Time Failover Simulation

This course is designed for professionals who want to build robust, fault-tolerant PostgreSQL environments and take their DBA or DevOps skills to the next level.