Monday, April 3, 2017

[google-cloud-sql-discuss] Failover down but show slave status doesn't report failure

So my failover replica went down this morning with the error: "Semi-sync slave net_flush() reply failed".

That's fine, things fail. The problem is that everything looks fine when I run show slave status on this replica.

Slave_IO_Running = Yes
Slave_SQL_Running = Yes
Seconds_Behind_Master = 0

So basically I have a situation where everything looks fine from the application's perspective but nothing is replicating.

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