mysqladmin - client for administering a MySQL server at Linux.org

Back to main site | Back to man page index

MYSQLADMIN(1) MySQL Database System MYSQLADMIN(1)

NAME
mysqladmin - client for administering a MySQL server

SYNOPSIS
mysqladmin [options] command [command-arg] [command [command-arg]] ...

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 following commands. 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.

Beginning with MySQL 5.1.12, this includes information about the Event Scheduler. See Section 19.4.5,
“Event Scheduler Status”.

· 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
· 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 12.4.5.31, “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

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 5.2.5, “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.

· --compress, -C

Compress all information sent between the client and the server if both support compression.

· --connect-timeout=timeout

Equivalent to --connect_timeout, see the end of this section.

· --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´.

· --debug-check

Print some debugging information when the program exits. This option was added in MySQL 5.1.21.

· --debug-info

Print debugging information and memory and CPU usage statistics when the program exits. This option was
added in MySQL 5.1.14.

· --default-character-set=charset_name

Use charset_name as the default character set. See Section 9.5, “Character Set Configuration”.

· --defaults-extra-file=filename

Set filename as the file to read default options from after the global defaults files has been read. Must
be given as first option.

· --defaults-file=filename

Set filename as the file to read default options from, override global defaults files. Must be given as
first option.

· --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.

· --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.
Guidelines for Password Security”. You can use an option file to avoid giving the password on the command
line.

· --pipe, -W

On Windows, connect to the server via a named pipe. This option applies only if the server supports
named-pipe connections.

· --port=port_num, -P port_num

The TCP/IP port number to use for the connection.

· --print-defaults

Print the program argument list and exit. This must be given as the first argument.

· --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.

· --shutdown-timeouttimeout

Equivalent of --shutdown_timeout, see the end of this section.

· --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 5.5.6.3, “SSL Command Options”.

· --user=user_name, -u user_name

The MySQL user name to use when connecting to the server.

· --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 and
is removed in MySQL 5.5. 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).

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 5.1 04/06/2010 MYSQLADMIN(1)