mysqlprocgrep(1)
NAME
mysqlprocgrep - Search Server Process Lists
SYNOPSIS
mysqlprocgrep [options]
DESCRIPTION
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 --age and --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 on them.
If no --age or --match-xxx options are given, the utility selects all
processes.
The --match-xxx options correspond to the columns in the
INFORMATION_SCHEMA.PROCESSLIST table. For example, --match-command
specifies a matching condition for PROCESSLIST.COMMAND column values.
There is no --match-time option. To specify a condition based on
process time, use --age.
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.
When the --kill-query or --kill-connection option is used, the utility
will display those rows from the SHOW PROCESSLIST that match the query
and are killed. This behavior exists as of MySQL Utilities 1.6.0.
To specify how to display output, use one of the following values with
the --format option:
* grid (default)
Display output in grid or table format like that of the mysql
client command-line tool.
* csv
Display output in comma-separated values format.
* tab
Display output in tab-separated format.
* vertical
Display output in single-column format like that of the \G command
for the mysql client command-line tool.
Options.PP mysqlprocgrep accepts the following command-line options:
* --help
Display a help message and exit.
* --license
Display license information and exit.
* --age=<time>
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:ss format, 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 +
or -, where + means older than the given time, and - means younger
than the given time.
* --character-set=<charset>
Sets the client character set. The default is retrieved from the
server variable character_set_client.
* --format=<format>, -f<format>
Specify the output display format. Permitted format values are grid
(default), csv, tab, and vertical.
* --kill-connection
Kill the connection for all matching processes (like the KILL
CONNECTION statement).
* --kill-query
Kill the query for all matching processes (like the KILL QUERY
statement).
* --match-command=<pattern>
Match all processes where the Command field matches the pattern.
* --match-db=<pattern>
Match all processes where the Db field matches the pattern.
* --match-host=<pattern>
Match all processes where the Host field matches the pattern.
* --match-id=<pattern>
Match all processes where the ID field matches the pattern.
* --match-info=<pattern>
Match all processes where the Info field matches the pattern.
* --match-state=<pattern>
Match all processes where the State field matches the pattern.
* --match-user=<pattern>
Match all processes where the User field matches the pattern.
* --print
Print information about the matching processes. This is the default
if no --kill-connection or --kill-query option is given. If a kill
option is given, --print prints information about the processes
before killing them.
* --regexp, --basic-regexp, -G
Perform pattern matches using the REGEXP operator. The default is
to use LIKE for matching. This affects the --match-xxx options.
* --server=<source>
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 supply
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 to least
secure.
* Use login-paths from your .mylogin.cnf file (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>]
* --sql, --print-sql, -Q
Instead of displaying the selected processes, emit the SELECT
statement that retrieves information about them. If the
--kill-connection or --kill-query option is given, the utility
generates a stored procedure named kill_processes() for killing the
queries rather than a SELECT statement.
* --sql-body
Like --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 www-data:
shell> mysqlprocgrep --kill-connection --sql-body \
--match-user=www-data --match-state=sleep
DECLARE 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;
* --ssl-ca
The path to a file that contains a list of trusted SSL CAs.
* --ssl-cert
The name of the SSL certificate file to use for establishing a
secure connection.
* --ssl-cert
The name of the SSL key file to use for establishing a secure
connection.
* --ssl
Specifies if the server connection requires use of SSL. If an
encrypted connection cannot be established, the connection attempt
fails. Default setting is 0 (SSL not required).
* --verbose, -v
Specify how much information to display. Use this option multiple
times to increase the amount of information. For example, -v =
verbose, -vv = more verbose, -vvv = debug.
* --version
Display version information and exit.
NOTES.PP For the --format option, the permitted values are not case
sensitive. In addition, values may be specified as any unambiguous
prefix of a valid value. For example, --format=g 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 (.mylogin.cnf). EXAMPLES.PP For each example,
assume that the root user on localhost has sufficient privileges to
kill queries and connections.
Kill all connections created by user john:
shell> mysqlprocgrep --server=root@localhost \
--match-user=john --kill-connection --format=CSV
# The following KILL commands were executed:
Id,User,Host,db,Command,Time,State,Info
4,john,localhost:50706,mysql,Sleep,5,,
Kill all connections that have been idle for more than 1 hour:
shell> mysqlprocgrep --server=root@localhost \
--match-command=sleep --age=1h --kill-connection
PERMISSIONS REQUIRED.PP The user must have the SELECT privilege on the
mysql database.
COPYRIGHT
Copyright 2006, 2016, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/.
SEE ALSO
For more information, please refer to the MySQL Utilities and Fabric documentation, which is available online at http://dev.mysql.com/doc/index-utils-fabric.html
AUTHOR
Oracle Corporation (http://dev.mysql.com/).
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