2015-04-07 13:49:53 23758 [ERROR] Slave I/O: error connecting to master 'replication'@master-host:3306' - retry-time: 60 retries: 1, Error_code: 2005
This was after attempting to do a change master to from previously running replication. The only change was the master host. The new guy I wanted to change master to is running from the same actual master.
This is using GTID so i was doing auto position=1 and not mucking with master_log_file master_log_position values.
I am able to connect to the new master using the replication credentials that show in mysql.slave_master_info via mysql client. Show grants confirms it has replication slave on .
I'm not seeing anything about denied connection attempts in the new master's error file, but I do see retry error attempts on the slave.
There's nothing more useful in show slave status\G
After getting frustrated I did a change master to back to the old master and it started running just fine.
I'm at a loss for how to continue trouble shooting this.