mysql_zap
Contents
MariaDB until 10.1
mysql_zap was removed in MariaDB 10.2. pkill can be used as an alternative.
mysql_zap kills processes that match a pattern. It uses the ps command and Unix signals, so it runs on Unix and Unix-like systems.
Invoke mysql_zap like this:
shell> mysql_zap [-signal] [-?Ift]
A process matches if its output line from the ps command contains the pattern. By default, mysql_zap asks for confirmation for each process. Respond y to kill the process, or q to exit mysql_zap. For any other response, mysql_zap does not attempt to kill the process.
If the -signal option is given, it specifies the name or number of the signal to send to each process. Otherwise, mysql_zap tries first with TERM (signal 15) and then with KILL (signal 9).
mysql_zap supports the following additional options:
| Option | Description |
|---|---|
--help, -?, -I | Display a help message and exit. |
-f | Force mode. mysql_zap attempts to kill each process without confirmation. |
-t | Test mode. Display information about each process but do not kill it. |
Example
localhost:~# mysql_zap -t mysql stty: standard input: unable to perform all requested operations USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 4073 0.0 0.2 3804 1308 ? S 08:51 0:00 /bin/bash /usr/bin/mysqld_safe mysql 4258 3.3 15.7 939740 81236 ? Sl 08:51 30:18 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock --port=3306
pkill as an Alternative
pkill can be used as an alternative to mysql_zap, although an important distinction between pkill and mysql_zap is that mysql_zap kills the server 'gently' first (with signal 15) and only if the server doesn't die in a limited time then tries -9.
To use pkill in the same way, one must run it twice; pkill --signal 15 mysqld ; sleep(10) ; pkill -f --signal 9 pattern
