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Difference between revisions of "MySQL"
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{{Depreciated|category=MySQL}} | |||
See the official [http://dev.mysql.com/doc/ MySQL documentation] for further info. | See the official [http://dev.mysql.com/doc/ MySQL documentation] for further info. | ||
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OPTIMIZE TABLE SystemEvents; | OPTIMIZE TABLE SystemEvents; | ||
</source> | </source> | ||
=== Skip Replication Errors === | |||
Sometimes replication to a Slave will stop due to an error. To skip the error and restart replication, perform the following on the slave... | |||
<source lang="mysql"> | |||
STOP SLAVE; | |||
SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1; | |||
START SLAVE; | |||
</source> | |||
=== Restart Replication === | |||
If replication is completely broken, or the slave no longer has an accurate copy of the master. | |||
# Create dump from master | |||
#* <code> mysqldump -u root -p --master-data --all-databases --flush-privileges | gzip -1 > /var/tmp/replication.sql.gz </code> | |||
# Copy to slave | |||
#* EG <code> scp /var/tmp/replication.sql.gz root@10.1.1.55:/var/tmp/. </code> | |||
# Stop slave if still running | |||
#* In MySQL - <code>STOP SLAVE;</code> | |||
# Import into slave | |||
#* <code> zcat /var/tmp/replication.sql.gz | mysql -u root -p</code> | |||
# Start slave | |||
#* In MySQL - <code>START SLAVE;</code> | |||
=== Remove Old Binary Logs === | === Remove Old Binary Logs === | ||
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To create a blank copy of a database (ie with a schema but no data) follow the procedure above but use the <code>-d</code> option when creating the dump, so | To create a blank copy of a database (ie with a schema but no data) follow the procedure above but use the <code>-d</code> option when creating the dump, so | ||
* <code> mysqldump -u root -p -d sourcedb > sourcedb-schema.sql </code> | * <code> mysqldump -u root -p -d sourcedb > sourcedb-schema.sql </code> | ||