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What is Slave_IO_Running in MySQL?
Slave_IO_Running : Whether the I/O thread for reading the source’s binary log is running. Normally, you want this to be Yes unless you have not yet started replication or have explicitly stopped it with STOP SLAVE . Slave_SQL_Running : Whether the SQL thread for executing events in the relay log is running.
What is Relay_Log_Pos?
Relay_Log_Pos. The position in the current relay log file up to which the SQL thread has read and executed. Relay_Master_Log_File. The name of the source binary log file containing the most recent event executed by the SQL thread.
How do I check if mysql is running?
We check the status with the systemctl status mysql command. We use the mysqladmin tool to check if MySQL server is running. The -u option specifies the user which pings the server. The -p option is a password for the user.
How do I stop a mysql slave?
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.
What is show master status?
SHOW MASTER STATUS. This statement provides status information about the binary log files of the source server. It requires the REPLICATION CLIENT privilege (or the deprecated SUPER privilege).
How do I know if my DB is running?
To check general database status, I recommend:
- Check if database processes are running. For example, from a Unix shell, running: $ ps -ef | grep pmon.
- Check if listeners are running using $ ps -ef | grep tns and $ lsnrctl status LISTENER.
Why is MySQL-slave _ Io _ running not working?
I have confiemd the replicatino is working, when I create a new database on the Master I can see the database exist in Slave. The problem is when I was doing some failure scenarios and shutdown the VPN, the replicaotin status on the Master didn’t show any errors :
Is there way to get only the result of slave _ Io _ running column?
I wanted to capture only status/result of Slave_IO_Running and Slave_SQL_Running column values, which I will be using to integrate into our application. Is there any way to get only the values of those fields instead of getting values of all fields of SHOW SLAVE STATUS. My OS is windows. I am using MySQL 5.0.24
Why is MySQL SQL thread running but Io running?
Further to this, if you have the SQL thread running but the IO thread stopped, this suggests there’s a problem in the communication between your slave and your master. From you “CHANGE MASTER” line, you are not specifying the port number.
Why is MySQL slave thread not running stack?
Following is solution which i used and it worked. “The first issue is that you changed the replication position instead of fixing the error, and used an incorrect binlog file name format (you likely just used the one from that post you linked I’d guess).