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17.1.2.7 Setting the Master Configuration on the Slave

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To set up the slave to communicate with the master for replication, configure the slave with the necessary connection information. To do this, execute the following statement on the slave, replacing the option values with the actual values relevant to your system:

  1. mysql> CHANGE MASTER TO
  2.     ->     MASTER_HOST='master_host_name',
  3.     ->     MASTER_USER='replication_user_name',
  4.     ->     MASTER_PASSWORD='replication_password',
  5.     ->     MASTER_LOG_FILE='recorded_log_file_name',
  6.     ->     MASTER_LOG_POS=recorded_log_position;
Note

Replication cannot use Unix socket files. You must be able to connect to the master MySQL server using TCP/IP.

The CHANGE MASTER TO statement has other options as well. For example, it is possible to set up secure replication using SSL. For a full list of options, and information about the maximum permissible length for the string-valued options, see Section 13.4.2.1, “CHANGE MASTER TO Syntax”.

Important

As noted in Section 17.1.2.3, “Creating a User for Replication”, if you are not using a secure connection and the user account named in the MASTER_USER option authenticates with the caching_sha2_password plugin (the default from MySQL 8.0), you must specify the MASTER_PUBLIC_KEY_PATH or GET_MASTER_PUBLIC_KEY option in the CHANGE MASTER TO statement to enable RSA key pair-based password exchange.


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Document created the 26/06/2006, last modified the 26/10/2018
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