Mysql Master-Slave replication with Puppet
To run the demo in vagrant, run
./deps.sh # clone the mysql puppet module
vagrant up # provision the two nodes with vagrant
to configure your mysqlmaster and mysqlslave nodes, then follow the steps below
to get replication running between them.
On Mysql Master
Make sure database is locked down, take note of the bin log File and Position, and take an export.
vagrant ssh mysqlmaster
$ mysql -u root -pchangeme
mysql> SLAVE STOP;
mysql> FLUSH TABLES WITH READ LOCK;
mysql> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 | 1467 | demo | |
+------------------+----------+--------------+------------------+
mysql> EXIT;
$ mysqldump -u root -pchangeme --opt demo > /vagrant/demo.sql
$ mysql -u root -pchangeme
mysql> UNLOCK TABLES;
On Mysql Slave
Import the export just taken from the master, configure the slave with:
- The mysql master host ip (
172.10.10.10) - The user created in puppet (
slave_user) - And the bin log position info (
mysql-bin.000002/1467)
vagrant ssh mysqlslave
$ mysql -u root -pchangeme demo < /vagrant/demo.sql
$ mysql -u root -pchangeme
mysql> CHANGE MASTER TO MASTER_HOST='172.10.10.10', \
MASTER_USER='slave_user', MASTER_PASSWORD='changeme', \
MASTER_LOG_FILE='mysql-bin.000002', MASTER_LOG_POS=1467;
mysql> START SLAVE;
mysql> SHOW SLAVE STATUS\G
Verify Replication
That's it! continue on to create a new table on the master node, insert a record, and see it show up on the slave.
On Mysql Master
vagrant ssh mysqlmaster
$ mysql -u root -pchangeme
mysql USE demo;
mysql> CREATE TABLE IF NOT EXISTS Content ( msg VARCHAR(255) ) ENGINE=InnoDB;
mysql> INSERT INTO Content (`msg`) VALUES ('hello world');
On Mysql Slave
vagrant ssh mysqlslave
$ mysql -u root -pchangeme
mysql> USE demo;
mysql> SELECT * FROM Content;
+-------------+
| msg |
+-------------+
| hello world |
+-------------+