YugabyteDB Master-to-Master Setup 🔥 Step-by-Step YSQL Active-Active Cluster #yugabytedb #database

🎥 YouTube full video:

https://youtu.be/AjyQDIi-gsk

Below is a DBA-friendly, 100% CLI, step-by-step guide to configure YugabyteDB Master-to-Master (Multi-Master) Cluster
(no Docker, production-style, YSQL enabled).

YugabyteDB is master-to-master by design, so once multiple masters are configured, all nodes are active and writable.

# 🔥 YugabyteDB Master-to-Master (Multi-Master) Setup

### Step-by-Step Full Process (YSQL Enabled)

✔ Works with YugabyteDB 2025.1.2.1
✔ True Master-to-Master (Active-Active)
✔ YSQL (PostgreSQL-compatible)
✔ No Docker
✔ CLI only
✔ Password: admin@123

## ⭐ 1. Architecture Overview (IMPORTANT)
+-------------+---------------------------------------+
| Component | Nodes |
| ----------- | ------------------------------------- |
| YB-Master | 3 (Leader + Followers, auto-election) |
| YB-TServer | 3 (Read/Write on all nodes) |
| Replication | Raft (sync, fault-tolerant) |
| Writes | Can go to ANY node |
+-------------+---------------------------------------+

📌 This is NOT traditional primary-replica
📌 All nodes accept writes (Master-to-Master)

## ⭐ 2. Server Details
+---------+-----------------+------------------+
| Node | IP | Role |
| ------- | --------------- | ---------------- |
| server1 | 192.168.136.128 | Master + TServer |
| server2 | 192.168.136.129 | Master + TServer |
| server3 | 192.168.136.130 | Master + TServer |
+---------+-----------------+------------------+

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📘 Note: Follow the process exactly as shown in the video.
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