Galera cluster best practices: zero downtime schema changes

Johan Andersson
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Galera Cluster is good at making your MySQL database HA, but what about schema changes? Is an ALTER TABLE statement something that requires a lot of advance scheduling? What is the impact on database uptime? Watch this webinar and learn how to do schema changes in your MySQL Galera cluster with maximum uptime and full data consistency.


  • How to perform Zero Downtime Schema Changes
  • 2 main methods: TOI and RSU
  • Total Order Isolation: predictability and consistency
  • Rolling Schema Upgrades
  • pt-online-schema-change
  • Schema synchronization with re-joining nodes
  • Recommended procedures
  • Common pitfalls/user errors
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