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I need to move a busy OLTP database from self hosted MariaDB 10.5 to Google Cloud SQL for MySQL 8.0 with minimal downtime.

The source is a self managed VM instance in Googles Cloud with replicas, ProxySQL as load balancer, etc. The destination is a Google Cloud SQL. The databse is ~400 GiB on disk and it takes about four hours to load it from a logicak dump.

I used to do this with replication and switchover, but MySQL 8.0 can't read the binary logs from MariaDB.

I would be grateful for any advice on how this move can be implemented with less than 10 minutes of downtime.

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  • Try asking on dba.stackexchange.com .
    – Rick James
    Jan 24 at 16:42

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