#Replicate begin now how to

MariaDB 10.0 introduced global transaction IDs (GTIDs) for replication. If you are starting a slave against a fresh master that was configured for replication from the start, then you don't have to specify MASTER_LOG_FILE and MASTER_LOG_POS. For example:ĬHANGE MASTER TO MASTER_HOST = '', MASTER_USER = 'replication_user', MASTER_PASSWORD = 'bigs3cret', MASTER_PORT = 3306, MASTER_LOG_FILE = 'master1-bin.000096', MASTER_LOG_POS = 568, MASTER_CONNECT_RETRY = 10 Begin by running a CHANGE MASTER TO, making sure that MASTER_LOG_FILE matches the file and MASTER_LOG_POS the position returned by the earlier SHOW MASTER STATUS.

Once the data has been imported, you are ready to start replicating.

Once the data has been copied, you can release the lock on the master by running UNLOCK TABLES.

Note for live databases: You just need to make a local copy of the data, you don't need to keep the master locked until the slave has imported the data.

#Replicate begin now how to

See Backup, Restore and Import for details on how to do this.

Now, with the lock still in place, copy the data from the master to the slave.

Get the current position in the binary log by running SHOW MASTER STATUS:.

Keep this session running - exiting it will release the lock.

On the master, flush and lock all tables by running FLUSH TABLES WITH READ LOCK.

You'll use this to tell the slave at exactly which point it should start replicating from. Now you need prevent any changes to the data while you view the binary log position.

Getting the Master's Binary Log Co-ordinates The server will need to be restarted in order for a change in this option to take effect. This can be a number from 1 to 2 32-1, and must be unique for each server in the replicating group. All servers, whether masters or slaves, are given a server_id. Similarly, if the address the server listens for TCP/IP connections is 127.0.0.1 (localhost), remote slaves connections will fail. If skip-networking=1, the server will limit connections to localhost only, and prevent all remote slaves from connecting. Check the following settings to avoid problems. There are a number of options that may impact or break replication. The main difference is that MySQL doesn't support log-basename. If you want to enable replication from MySQL to MariaDB, you can do it in almost the same way as between MariaDB servers. * TO 'replication_user' '%' Example Enabling Replication for MySQL Then execute the following SQL with the mysql command line client: CREATE USER 'replication_user' '%' IDENTIFIED BY 'bigs3cret' GRANT REPLICATION SLAVE ON *. This mainly affects the size of the binary log that is sent between the Master and the Slaves. The server id is a unique number for each MariaDB/MySQL server in your network.īinlog-format specifies how your statements are logged. Usually this is done by creating a dedicated slave user, and granting that user permission only to replicate (REPLICATION SLAVE permission).Īdd the following into your my.cnf file and restart the database. Slaves will need permission to connect and start replicating from a server.If this is not specified your host name will be used and there will be problems if the hostname ever changes. Specify a unique name for your replication logs with -log-basename.All slaves must also be given a server_id. See Activating the Binary Log and Binary log formats for details. Enable binary logging if it's not already enabled.See also Replicating from MySQL Master to MariaDB Slave. MariaDB versions are usually backward compatible, while of course older versions cannot always be forward compatible.

In general, when replicating across different versions of MariaDB, it is best that the master is an older version than the slave. If you would like to use Mariabackup to set up a replication slave, then you might find the information at Setting up a Replication Slave with Mariabackup helpful. Setting up a Replication Slave with Mariabackup These have a number of benefits, and it is generally recommended to use this feature from MariaDB 10.0. MariaDB 10.0 introduced replication with global transaction IDs.