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What does reset slave do in mysql?
RESET SLAVE makes the replica forget its replication position in the source’s binary log. This statement is meant to be used for a clean start: It clears the replication metadata repositories, deletes all the relay log files, and starts a new relay log file.
How do I stop and start slave in mysql?
To stop processing of the binary log from the source, use STOP SLAVE : mysql> STOP SLAVE; When replication is stopped, the slave I/O thread stops reading events from the source’s binary log and writing them to the relay log, and the SQL thread stops reading events from the relay log and executing them.
How does master-slave replication work in mysql?
Replication works as follows: Whenever the master’s database is modified, the change is written to a file, the so-called binary log, or binlog. The slave has another thread, called the SQL thread, that continuously reads the relay log and applies the changes to the slave server.
What should I do if MySQL replication stops?
This tells the slave to skip one query (which is the invalid one that caused the replication to stop). If you’d like to skip two queries, you’d use SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 2; instead and so on. That’s it already. Now we can start the slave again… and check if replication is working again:
Why is MySQL replication not working in MariaDB?
If you have set up MySQL replication, you probably know this problem: sometimes there are invalid MySQL queries which cause the replication to not work anymore. In this short guide, I explain how you can repair the replication on the MySQL slave without the need to set it up from scratch again. This guide is for MySQL and MariaDB.
Can a slave catch up to a Master?
It is worth noting that after completing this process, the slave did later completely catch up as evidenced by show slave status Master_Log_File finally matching that of show master status, and the show slave status Seconds_Behind_Master achieving a zero value. Thanks for contributing an answer to Database Administrators Stack Exchange!
What does the last line in Nginx replication mean?
The last line says that replication has started again, and if you see no errors after that line, everything is ok. Falko Timme is an experienced Linux administrator and founder of Timme Hosting, a leading nginx business hosting company in Germany.