A naukri.com initiative
Dev
1M
340
Image Credit: Dev
Zero-Downtime MySQL Migration to Aurora Using AWS DMS and Binlog Replication
- Migrating MySQL databases to Amazon Aurora RDS can simplify operations with high availability and scalability benefits.
- Two proven backup and restore approaches are discussed in the guide for migration: Percona XtraBackup and mysqldump to Amazon S3.
- Percona XtraBackup is recommended for large, same-version migrations for faster and consistent snapshots with binary log position.
- For lighter or version-sensitive migrations, mysqldump and S3 upload method is suggested.
- In case of MySQL version mismatch, a staged migration approach using AWS DMS is advised.
- Handling DEFINER clauses in stored logic objects is crucial to prevent import failures and replication issues during migration.
- Setting up replication from MySQL source to Amazon Aurora involves enabling binary logging, creating a replication user, and monitoring replication status.
- Best practices before replication or cutover include setting binlog_format=ROW, read_only=ON, adjusting buffer pool size, and monitoring replication lag.
- CloudWatch is recommended for monitoring AuroraReplicaLag, and testing workloads in a non-prod clone of Aurora before cutover.
- The guide also covers post-restore validation in Aurora, recreating DEFINER users, and configuring external replication in Aurora.
- Additional steps like promoting Aurora to handle app writes and using CloudWatch alarms for replication lag are outlined for a successful cutover.
Read Full Article
20 Likes
For uninterrupted reading, download the app