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MYSQLADMIN(1) MySQL Database System MYSQLADMIN(1)
NAME
mysqladmin - client for administering a MySQL server
SYNOPSIS
mysqladmin [options] command [command-options] [command [command-options]] ...
DESCRIPTION
mysqladmin is a client for performing administrative operations. You can use it to check the server's
configuration and current status, to create and drop databases, and more.
Invoke mysqladmin like this:
shell> mysqladmin [options] command [command-arg] [command [command-arg]] ...
mysqladmin supports the commands described in the following list. Some of the commands take an
argument following the command name.
• create db_name
Create a new database named db_name.
• debug
Tell the server to write debug information to the error log.
• drop db_name
Delete the database named db_name and all its tables.
• extended-status
Display the server status variables and their values.
• flush-hosts
Flush all information in the host cache.
• flush-logs
Flush all logs.
• flush-privileges
Reload the grant tables (same as reload).
• flush-status
Clear status variables.
• flush-tables
Flush all tables.
• flush-threads
Flush the thread cache.
• kill id,id,...
Kill server threads. If multiple thread ID values are given, there must be no spaces in the list.
• old-password new-password
This is like the password command but stores the password using the old (pre-4.1)
password-hashing format. (See Section 5.5.6.3, "Password Hashing in MySQL".)
• password new-password
Set a new password. This changes the password to new-password for the account that you use with
mysqladmin for connecting to the server. Thus, the next time you invoke mysqladmin (or any other
client program) using the same account, you will need to specify the new password.
If the new-password value contains spaces or other characters that are special to your command
interpreter, you need to enclose it within quotes. On Windows, be sure to use double quotes
rather than single quotes; single quotes are not stripped from the password, but rather are
interpreted as part of the password. For example:
shell> mysqladmin password "my new password"
Caution
Do not use this command used if the server was started with the --skip-grant-tables option.
No password change will be applied. This is true even if you precede the password command
with flush-privileges on the same command line to re-enable the grant tables because the
flush operation occurs after you connect. However, you can use mysqladmin flush-privileges to
re-enable the grant table and then use a separate mysqladmin password command to change the
password.
• ping
Check whether the server is alive. The return status from mysqladmin is 0 if the server is
running, 1 if it is not. This is 0 even in case of an error such as Access denied, because this
means that the server is running but refused the connection, which is different from the server
not running.
• processlist
Show a list of active server threads. This is like the output of the SHOW PROCESSLIST statement.
If the --verbose option is given, the output is like that of SHOW FULL PROCESSLIST. (See
Section 12.5.5.27, "SHOW PROCESSLIST Syntax".)
• reload
Reload the grant tables.
• refresh
Flush all tables and close and open log files.
• shutdown
Stop the server.
• start-slave
Start replication on a slave server.
• status
Display a short server status message.
• stop-slave
Stop replication on a slave server.
• variables
Display the server system variables and their values.
• version
Display version information from the server.
All commands can be shortened to any unique prefix. For example:
shell> mysqladmin proc stat
+----+-------+-----------+----+---------+------+-------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+-------+-----------+----+---------+------+-------+------------------+
| 51 | monty | localhost | | Query | 0 | | show processlist |
+----+-------+-----------+----+---------+------+-------+------------------+
Uptime: 1473624 Threads: 1 Questions: 39487
Slow queries: 0 Opens: 541 Flush tables: 1
Open tables: 19 Queries per second avg: 0.0268
The mysqladmin status command result displays the following values:
• Uptime
The number of seconds the MySQL server has been running.
• Threads
The number of active threads (clients).
• Questions
The number of questions (queries) from clients since the server was started.
• Slow queries
The number of queries that have taken more than long_query_time seconds. See Section 5.2.4, "The
Slow Query Log".
• Opens
The number of tables the server has opened.
• Flush tables
The number of flush-*, refresh, and reload commands the server has executed.
• Open tables
The number of tables that currently are open.
• Memory in use
The amount of memory allocated directly by mysqld. This value is displayed only when MySQL has
been compiled with --with-debug=full.
• Maximum memory used
The maximum amount of memory allocated directly by mysqld. This value is displayed only when
MySQL has been compiled with --with-debug=full.
If you execute mysqladmin shutdown when connecting to a local server using a Unix socket file,
mysqladmin waits until the server's process ID file has been removed, to ensure that the server has
stopped properly.
mysqladmin supports the options in the following list. It also reads option files and supports the
options for processing them described at Section 4.2.3.3.1, "Command-Line Options that Affect Option-File OptionFile
File Handling".
• --help, -?
Display a help message and exit.
• --character-sets-dir=path
The directory where character sets are installed. See Section 9.2, "The Character Set Used for
Data and Sorting".
• --compress, -C
Compress all information sent between the client and the server if both support compression.
• --count=N, -c N
The number of iterations to make for repeated command execution if the --sleep option is given.
• --debug[=debug_options], -# [debug_options]
Write a debugging log. A typical debug_options string is 'd:t:o,file_name'. The default is
'd:t:o,/tmp/mysqladmin.trace'.
• --default-character-set=charset_name
Use charset_name as the default character set. See Section 9.2, "The Character Set Used for Data
and Sorting".
• --force, -f
Do not ask for confirmation for the drop db_name command. With multiple commands, continue even
if an error occurs.
• --host=host_name, -h host_name
Connect to the MySQL server on the given host.
• --password[=password], -p[password]
The password to use when connecting to the server. If you use the short option form (-p), you
cannot have a space between the option and the password. If you omit the password value following
the --password or -p option on the command line, you are prompted for one.
Specifying a password on the command line should be considered insecure. See Section 5.5.6.2,
"End-User Guidelines for Password Security".
• --pipe, -W
On Windows, connect to the server via a named pipe. This option applies only for connections to a
local server, and only if the server supports named-pipe connections.
• --port=port_num, -P port_num
The TCP/IP port number to use for the connection.
• --protocol={TCP|SOCKET|PIPE|MEMORY}
The connection protocol to use for connecting to the server. It is useful when the other
connection parameters normally would cause a protocol to be used other than the one you want. For
details on the allowable values, see Section 4.2.2, "Connecting to the MySQL Server".
• --relative, -r
Show the difference between the current and previous values when used with the --sleep option.
Currently, this option works only with the extended-status command.
• --silent, -s
Exit silently if a connection to the server cannot be established.
• --sleep=delay, -i delay
Execute commands repeatedly, sleeping for delay seconds in between. The --count option determines
the number of iterations. If --count is not given, mysqladmin executes commands indefinitely
until interrupted.
• --socket=path, -S path
For connections to localhost, the Unix socket file to use, or, on Windows, the name of the named
pipe to use.
• --ssl*
Options that begin with --ssl specify whether to connect to the server via SSL and indicate where
to find SSL keys and certificates. See Section 5.5.7.3, "SSL Command Options".
• --user=user_name, -u user_name
The MySQL user name to use when connecting to the server.
• --verbose, -v
Verbose mode. Print more information about what the program does.
• --version, -V
Display version information and exit.
• --vertical, -E
Print output vertically. This is similar to --relative, but prints output vertically.
• --wait[=count], -w[count]
If the connection cannot be established, wait and retry instead of aborting. If a count value is
given, it indicates the number of times to retry. The default is one time.
You can also set the following variables by using --var_name=value The --set-variable format is
deprecated. syntax:
• connect_timeout
The maximum number of seconds before connection timeout. The default value is 43200 (12 hours).
• shutdown_timeout
The maximum number of seconds to wait for server shutdown. The default value is 3600 (1 hour).
It is also possible to set variables by using --var_name=value. The --set-variable format is
deprecated.
COPYRIGHT
Copyright 2007-2008 MySQL AB, 2009 Sun Microsystems, Inc.
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 Reference Manual, which may already be installed
locally and which is also available online at http://dev.mysql.com/doc/.
AUTHOR
Sun Microsystems, Inc. (http://www.mysql.com/).
MySQL 5.0 11/09/2009 MYSQLADMIN(1)
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