How We Brought a Dead MySQL InnoDB Cluster Back to Life

A war story: complete outage, GTID chaos, duplicate UUIDs, and the steps that finally worked

There’s a particular kind of dread that comes with staring at a database cluster where every node shows OFFLINE.

No reads. No writes. Just silence where your production data used to be.

That’s exactly where we found ourselves with a MySQL InnoDB Cluster — three nodes, all down, all stubbornlyPlanet for the MySQL Community