MySQL database replication

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Description

We use mysql replication to mirror mysql databases from a single master mysqld server to a series of slave servers on back end nodes. This process is asynchronous and asymmetrical - back end nodes are read-only.

Configuration

Two options must be set to enable replication. First, binary logging must be enabled. Second, every mysqld server in the pool needs a unique ID.

These parameters should be set in the my.cnf file (/etc/my.cnf on WormBase servers).

[mysqld]
log-bin=mysql-bin
server-id=1

See WormBase_Infrastructure and Hardware catalog for server IDs.

brie3 (the primary WormBase development machine) acts as the master server, with server-id = 1.