mysql purge relay logs

1. How do I purge the relay log in MySQL?
2. Can I delete MySQL relay BIN files?
3. What is Relay log in MySQL?
4. How do I clear MySQL logs?
5. What is purging in database?
6. What does flush logs do in MySQL?
7. What is Relay log file?
8. How do I read MySQL binary logs?
9. Where are MySQL bin logs stored?
10. How does MySQL replication work?
11. What is purge vs delete?
12. How do you purge documents?
13. What is purging in SQL?

How do I purge the relay log in MySQL?

There is no explicit mechanism for deleting relay logs because the replication SQL thread takes care of doing so. However, FLUSH LOGS rotates relay logs, which influences when the replication SQL thread deletes them.

Can I delete MySQL relay BIN files?

No, do not delete the relay-bin files manually. What you can do is to purge the binary files using MySQL commands. See the MySQL 5.0 Manual for more on the PURGE BINARY LOGS command. it will purge all relay binary logs.

What is Relay log in MySQL?

The relay log, which is written by the replication I/O thread, contains the transactions read from the replication source server's binary log. The transactions in the relay log are applied on the replica by the replication SQL thread. For information about the relay log, see Section 16.2. 4.1, “The Relay Log”.

How do I clear MySQL logs?

clean general log

1. First I need to turn off general log as it will take a large amount of space.
2. Then comment the line general_log in the option file which is /etc/mysql/my. cnf in my linux.
3. And then restart mysql server. ...
4. Run the sql below at last to clean the logs.

What is purging in database?

Purging is the process of freeing up space in the database or of deleting obsolete data that is not required by the system. The purge process can be based on the age of the data or the type of data.

What does flush logs do in MySQL?

Flush log is used to flush the individual logs like Binary logs, general logs and error logs etc. There is a command-line interface provided by the mysql admin utility for flush operations, using commands such as flush-logs, flush-status, flush-hosts, flush-privileges and flush-tables.

What is Relay log file?

The relay log is a set of log files created by a replica during replication. It's the same format as the binary log, containing a record of events that affect the data or structure; thus, mysqlbinlog can be used to display its contents.

How do I read MySQL binary logs?

You can use mysqlbinlog to read binary log files directly and apply them to the local MySQL server. You can also read binary logs from a remote server by using the --read-from-remote-server option. To read remote binary logs, the connection parameter options can be given to indicate how to connect to the server.

Where are MySQL bin logs stored?

The MySQL binary logs and index files are saved in the C:\ProgramData\MySQL\MySQL Server 8.0 directory. We can change the default location of the binary logs.

How does MySQL replication work?

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 is purge vs delete?

The terms "deleting" and "purging" have different meanings when working with data entry. ... Purging means moving data from one source to another, and you keep an archive in case you need the data in the future. Deleting data removes it permanently from the tables, and you can no longer reference the records.

How do you purge documents?

A document or folder must first be deleted before it can be purged.
...
To purge a document or folder:

1. Right-click the folder from where the document or folder was deleted, point to Edit, and then click Undelete. ...
2. Select the items that you want to purge and click Purge. ...
3. Click Yes to proceed. ...
4. Click Close.

What is purging in SQL?

Use the PURGE statement to remove a table or index from your recycle bin and release all of the space associated with the object, or to remove the entire recycle bin, or to remove part of all of a dropped tablespace from the recycle bin.