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--- mysql:changemasters [2015/06/24 16:50] – [Second: make the slave to change the master] rlunaro
+++ mysql:changemasters [2022/12/02 21:02] (current) – external edit 127.0.0.1
@@ Line 105: / Line 105: @@
 Among the information that ''show slave status\G'' displays, I've chosen Read_Master_Log_Pos to make sure
 both database servers are in the same position.
+==== Create (if it does not exist) a replication user in future-master ====
+<code>
+grant replication slave, replication client on *.* to YOUR-REPLICATION-USERNAME identified by 'YOUR-REPLICATION-PASSWORD';
+</code>
+==== Check master status an take note of the master log file and master log position ====
+We have to issue a ''show master status'' command to get the file and log position of our new master:
+<code>
+mysql> show master status\G
+*************************** 1. row ***************************
+             File: YOUR-MASTER-LOG-FILE
+         Position: YOUR-MASTER-LOG-POS
+     Binlog_Do_DB:
+ Binlog_Ignore_DB:
+Executed_Gtid_Set:
+row in set (0.00 sec)
+</code>
+With this two values, YOUR-MASTER-LOG-FILE and YOUR-MASTER-LOG-POS, we can move to the
+slave and issue a change master to command.
 ==== Issue a change master command ====
@@ Line 116: / Line 140: @@
 master_port=3306,
 master_user='YOUR-REPLICATION-USERNAME',
-master_password='YOUR-REPLICATION-PASSWORD';
+master_password='YOUR-REPLICATION-PASSWORD',
+master_log_file = 'YOUR-MASTER-LOG-FILE',
+master_log_pos = YOUR-MASTER-LOG-POSITION;
+start slave;
 </code>
+And I've stopped and started the slave.
+===== Final check =====
+You can double check that your slave is working with the new configuration just by the method of looking
+one change made in the new master.