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MySQL Replication  /  ...  /  Starting Multi-Source Replication Slaves

2.4.5 Starting Multi-Source Replication Slaves

Once you have added channels for all of the replication masters, issue a START SLAVE statement to start replication. When you have enabled multiple channels on a slave, you can choose to either start all channels, or select a specific channel to start. For example, to start the two channels separately, use the mysql client to issue the following statements:

mysql> START SLAVE FOR CHANNEL "master_1";
mysql> START SLAVE FOR CHANNEL "master_2";

For the full syntax of the START SLAVE command and other available options, see START SLAVE Statement.

To verify that both channels have started and are operating correctly, you can issue SHOW SLAVE STATUS statements on the slave, for example:

mysql> SHOW SLAVE STATUS FOR CHANNEL "master_1"\G
mysql> SHOW SLAVE STATUS FOR CHANNEL "master_2"\G