MYSQLADMIN(1) MySQL Database System MYSQLADMIN(1)
mysqladmin - client for administering a MySQL server
mysqladmin [options] command [command-options] [command [command-options]] ...
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 following commands. Some of the commands take an argument
following the command name.
o create db_name
Create a new database named db_name.
Tell the server to write debug information to the error log.
Beginning with MySQL 5.1.12, this includes information about the Event Scheduler. See
Section 19.4.5, "Event Scheduler Status".
o drop db_name
Delete the database named db_name and all its tables.
Display the server status variables and their values.
Flush all information in the host cache.
Flush all logs.
Reload the grant tables (same as reload).
Clear status variables.
Flush all tables.
Flush the thread cache.
o kill id,id,...
Kill server threads. If multiple thread ID values are given, there must be no spaces
in the list.
o 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 188.8.131.52, "Password Hashing in MySQL".)
o 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"
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.
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.
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 184.108.40.206, "SHOW PROCESSLIST Syntax".)
Reload the grant tables.
Flush all tables and close and open log files.
Stop the server.
Start replication on a slave server.
Display a short server status message.
Stop replication on a slave server.
Display the server system variables and their values.
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:
The number of seconds the MySQL server has been running.
The number of active threads (clients).
The number of questions (queries) from clients since the server was started.
o Slow queries
The number of queries that have taken more than long_query_time seconds. See
Section 5.2.5, "The Slow Query Log".
The number of tables the server has opened.
o Flush tables
The number of flush-*, refresh, and reload commands the server has executed.
o Open tables
The number of tables that currently are open.
o 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.
o 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 following options, which can be specified on the command line or
in the [mysqladmin] and [client] option file groups. mysqladmin also supports the options
for processing option files described at Section 220.127.116.11.1, "Command-Line Options that
Affect Option-File Handling".
o --help, -?
Display a help message and exit.
The directory where character sets are installed. See Section 9.5, "Character Set
o --compress, -C
Compress all information sent between the client and the server if both support
Equivalent to --connect_timeout, see the end of this section.
o --count=N, -c N
The number of iterations to make for repeated command execution if the --sleep option
o --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'.
Print some debugging information when the program exits. This option was added in
Print debugging information and memory and CPU usage statistics when the program
exits. This option was added in MySQL 5.1.14.
Use charset_name as the default character set. See Section 9.5, "Character Set
Set filename as the file to read default options from after the global defaults files
has been read. Must be given as first option.
Set filename as the file to read default options from, override global defaults files.
Must be given as first option.
o --force, -f
Do not ask for confirmation for the drop db_name command. With multiple commands,
continue even if an error occurs.
o --host=host_name, -h host_name
Connect to the MySQL server on the given host.
o --no-beep, -b
Suppress the warning beep that is emitted by default for errors such as a failure to
connect to the server. This option was added in MySQL 5.1.17.
Do not read default options from any option file. This must be given as the first
o --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, mysqladmin
prompts for one.
Specifying a password on the command line should be considered insecure. See
Section 18.104.22.168, "End-User Guidelines for Password Security". You can use an option
file to avoid giving the password on the command line.
o --pipe, -W
On Windows, connect to the server via a named pipe. This option applies only if the
server supports named-pipe connections.
o --port=port_num, -P port_num
The TCP/IP port number to use for the connection.
Print the program argument list and exit. This must be given as the first argument.
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".
o --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.
Equivalent of --shutdown_timeout, see the end of this section.
o --silent, -s
Exit silently if a connection to the server cannot be established.
o --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.
o --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.
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 22.214.171.124, "SSL Command
o --user=user_name, -u user_name
The MySQL user name to use when connecting to the server.
o --verbose, -v
Verbose mode. Print more information about what the program does.
o --version, -V
Display version information and exit.
o --vertical, -E
Print output vertically. This is similar to --relative, but prints output vertically.
o --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
You can also set the following variables by using --var_name=value The --set-variable
format is deprecated and is removed in MySQL 5.5. syntax:
The maximum number of seconds before connection timeout. The default value is 43200
The maximum number of seconds to wait for server shutdown. The default value is 3600
Copyright 2007-2008 MySQL AB, 2008-2010 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.
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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/.
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/.
Sun Microsystems, Inc. (http://www.mysql.com/).
MySQL 5.1 04/06/2010 MYSQLADMIN(1)