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12.5.2.6 SET GLOBAL SQL_SLAVE_SKIP_COUNTER Syntax »
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12.5.2.5. RESET SLAVE Syntax

RESET SLAVE

RESET SLAVE makes the slave forget its replication position in the master's binary log. This statement is meant to be used for a clean start: It deletes the master.info and relay-log.info files, all the relay log files, and starts a new relay log file. To use RESET SLAVE, the slave replication threads must be stopped (use STOP SLAVE if necessary).

Note

All relay log files are deleted, even if they have not been completely executed by the slave SQL thread. (This is a condition likely to exist on a replication slave if you have issued a STOP SLAVE statement or if the slave is highly loaded.)

Connection information stored in the master.info file is immediately reset using any values specified in the corresponding startup options. This information includes values such as master host, master port, master user, and master password. If the slave SQL thread was in the middle of replicating temporary tables when it was stopped, and RESET SLAVE is issued, these replicated temporary tables are deleted on the slave.

This statement was named FLUSH SLAVE before MySQL 3.23.26.


User Comments

Posted by Chris Waterson on June 28 2005 10:20pm[Delete] [Edit]

If you want to make a slave *completely* forget that it ever was a slave, then:

CHANGE MASTER TO MASTER_HOST=''

seems to do the trick.

Posted by Baron Schwartz on February 25 2008 6:24pm[Delete] [Edit]

If you run CHANGE MASTER TO MASTER_HOST='', you will not get any output from SHOW SLAVE STATUS. However, if you look in the filesystem you'll still see the master.info files, etc. If you then run RESET SLAVE, these files will be deleted.

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