This utility scans the process lists for the servers specified
using instances of the
--server option and selects
those that match the conditions specified using the
--match-xxx options. For a process to match,
all conditions given must match. The utility then either prints
the selected processes (the default) or executes certain actions
--match-xxx options are given, the utility
selects all processes.
--match-xxx options correspond to the
columns in the
table. For example,
--match-command specifies a
matching condition for
values. There is no
--match-time option. To
specify a condition based on process time, use
Processes that can be seen and killed are subject to whether the account used to connect to the server has the PROCESS and SUPER privileges. Without PROCESS, the account cannot see processes belonging to other accounts Without SUPER, the account cannot kill processes belonging to other accounts
To specify how to display output, use one of the following values
Display output in grid or table format like that of the mysql client command-line tool.
Display output in comma-separated values format.
Display output in tab-separated format.
Display output in single-column format like that of the
\Gcommand for the mysql client command-line tool.
mysqlprocgrep accepts the following command-line options:
Display a help message and exit.
Display license information and exit.
Select only processes that have been in the current state more than a given time. The time value can be specified in two formats: either using the
hh:mm:ssformat, with hours and minutes optional, or as a sequence of numbers with a suffix giving the period size.
The permitted suffixes are s (second), m (minute), h (hour), d (day), and w (week). For example, 4h15m represents 4 hours and 15 minutes.
For both formats, the specification can optionally be preceded by
+means older than the given time, and
-means younger than the given time.
Sets the client character set. The default is retrieved from the server variable
Specify the output display format. Permitted format values are grid (default), csv, tab, and vertical.
Kill the connection for all matching processes (like the
Kill the query for all matching processes (like the
Match all processes where the Command field matches the pattern.
Match all processes where the Db field matches the pattern.
Match all processes where the Host field matches the pattern.
Match all processes where the ID field matches the pattern.
Match all processes where the Info field matches the pattern.
Match all processes where the State field matches the pattern.
Match all processes where the User field matches the pattern.
Print information about the matching processes. This is the default if no
--kill-queryoption is given. If a kill option is given,
Perform pattern matches using the REGEXP operator. The default is to use LIKE for matching. This affects the
Connection information for a server. Use this option multiple times to search multiple servers.
To connect to a server, it is necessary to specify connection parameters such as user name, host name, password, and either a port or socket. MySQL Utilities provides a number of ways to provide this information. All of the methods require specifying your choice via a command-line option such as --server, --master, --slave, etc. The methods include the following in order of most secure.
Use login-paths from your
.mylogin.cnffile (encrypted, not visible). Example : <login-path>[:<port>][:<socket>]
Use a configuration file (unencrypted, not visible) Note: available in release-1.5.0. Example : <configuration-file-path>[:<section>]
Specify the data on the command-line (unencrypted, visible). Example : <user>[:<passwd>]@<host>[:<port>][:<socket>]
Instead of displaying the selected processes, emit the SELECT statement that retrieves information about them. If the
--kill-queryoption is given, the utility generates a stored procedure named
kill_processes()for killing the queries rather than a SELECT statement.
--sql, but produces the output as the body of a stored procedure without the CREATE PROCEDURE part of the definition. This could be used, for example, to generate an event for the server Event Manager.
When used with a kill option, code for killing the matching queries is generated. Note that it is not possible to execute the emitted code unless it is put in a stored routine, event, or trigger. For example, the following code could be generated to kill all idle connections for user
mysqlprocgrep --kill-connection --sql-body \
--match-user=www-data --match-state=sleepDECLARE kill_done INT; DECLARE kill_cursor CURSOR FOR SELECT Id, User, Host, Db, Command, Time, State, Info FROM INFORMATION_SCHEMA.PROCESSLIST WHERE user LIKE 'www-data' AND State LIKE 'sleep' OPEN kill_cursor; BEGIN DECLARE id BIGINT; DECLARE EXIT HANDLER FOR NOT FOUND SET kill_done = 1; kill_loop: LOOP FETCH kill_cursor INTO id; KILL CONNECTION id; END LOOP kill_loop; END; CLOSE kill_cursor;
Specify how much information to display. Use this option multiple times to increase the amount of information. For example,
-vv= more verbose,
Display version information and exit.
--format option, the
permitted values are not case sensitive. In addition, values may
be specified as any unambiguous prefix of a valid value. For
specifies the grid format. An error occurs if a prefix matches
more than one valid value.
The path to the MySQL client tools should be included in the
PATH environment variable in order to use the
authentication mechanism with login-paths. This will allow the
utility to use the my_print_defaults tools
which is required to read the login-path values from the login
configuration file (
For each example, assume that the
root user on
localhost has sufficient privileges to kill
queries and connections.
Kill all queries created by user
john that are
less than 1 minute:
mysqlprocgrep --server=root@localhost \
--match-user=john --age=-1m --kill-query
Kill all connections that have been idle for more than 1 hour:
mysqlprocgrep --server=root@localhost \
--match-command=sleep --age=1h --kill-connection
The user must have the SELECT privilege on the mysql database.