How do I restart mysql master slave replication?
…do your what you need to do here…
- in command line do: /etc/init.d/mysql start. (check for errors, sometimes in my.cnf)
- in mysql client do: START SLAVE;
- in mysql client do: SHOW SLAVE STATUS\G.
- After you are satisfied, set up the slave server back on the load balancer.
How do I change the master log position in mysql?
Conclusion :
- STOP SLAVE;
- SHOW SLAVE STATUS \G.
- note down Relay_Master_Log_File value (Example : mysql-bin. 000007) and Exec_Master_Log_Pos value (Example : 775)
- CHANGE MASTER TO MASTER_HOST=”, MASTER_LOG_FILE=’mysql-bin. 000007′, MASTER_LOG_POS=775;
- START SLAVE;
How to change a MySQL previous slave to be a Master?
In MySQL 5.5.16 and later, you can use RESET SLAVE ALL to do all that RESET SLAVE does and reset the connection parameters from the memory, this way it doesn’t require a mysqld restart. Remove skip-slave-start from /etc/my.cnf
How does reset slave work in MySQL 5.5?
In MySQL 5.5 (unlike the case in MySQL 5.1 and earlier), RESET SLAVE does not change any replication connection parameters such as master host, master port, master user, or master password, which are retained in memory. This means that START SLAVE can be issued without requiring a CHANGE MASTER TO statement following RESET SLAVE.
Why do I need a slave in MySQL?
The slaves can also be used for data accessibility to reduce the load on the master database. One of the main purposes of going for a master-slave replication system is to have a standby system with a live backup that can be promoted as the master when the original master server crashes.
When to change a slave to become the Master?
A typical scenario of when this is useful is if you have set up a new version of MariaDB as a slave, for example for testing, and want to upgrade your master to the new version. In MariaDB replication, a slave should be of a version same or newer than the master.