Learn how to set up MySQL replication on Ubuntu using MySQL 8. Configure source and replica servers with secure, production-ready settings.

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Step-by-step guide to configuring MySQL binary log file position-based replication between two Ubuntu servers. Covers firewall setup, source server configuration (bind-address, server-id, log_bin, binlog_do_db), creating a dedicated replication user with REPLICATION SLAVE privileges, obtaining binary log coordinates, optionally migrating existing data via mysqldump, configuring the replica server, and starting replication. Also includes a troubleshooting section covering connection failures, stopped IO/SQL threads, incorrect log coordinates, replication lag, binary logging issues, and authentication plugin mismatches. A FAQ section explains replication concepts including GTID-based replication, replica promotion, and SSL/TLS security.

How To Set Up Replication in MySQL

Step 1 — Adjusting Your Source Server’s Firewall

Step 2 — Configuring the Source Database

Step 4 — Retrieving Binary Log Coordinates from the Source

Step 5 — Configuring the Replica Database

Step 6 — Starting and Testing Replication