A. To safely purge binary log files, perform these steps:
1. On each slave server, use show slave status to check which log file it is reading.
2. Obtain a listing of the binary log files on the master server with show binary logs.
3. Determine the earliest log file among all the slaves. This is the target file. If all the slaves are up-to-date, this is the last log file on the list.
4. Make a backup of all the log files you are about to delete. (This step is optional, but always advisable.)
5. Purge all log files up to but not including the target file by using the purge binary logs statement

B. Delete all binlog files manually on the file system to release storage spaces.

C. On the Master server, disable binlog by removing the --log-bin option.

D. Set the expire_logs_days system variable to expire binary log files automatically after a given number of days.

E. Execute the purge binary logs statement without argument.