MYSQLADMIN(1) MySQL Database System MYSQLADMIN(1)
mysqladmin - client for administering a MySQL server
mysqladmin [options] command [command-options] [command
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.
Tell the server to write debug information to the error log.
? 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.
? 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 184.108.40.206,
"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 quotation marks. On Windows, be sure to use double quotation
marks rather than single quotation marks; single quotation marks
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 available. 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 220.127.116.11, "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
? Slow queries
The number of queries that have taken more than long_query_time
seconds. See Section 5.2.4, "The Slow Query Log".
The number of tables the server has opened.
? Flush tables
The number of flush-*, refresh, and reload commands the server has
? 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
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
mysqladmin supports the following options, which can be specified on
the command line or in the [mysqladmin] and [client] groups of an
option file. mysqladmin also supports the options for processing
option files described at Section 18.104.22.168.1, "Command-Line Options that
Affect Option-File Handling".
? --help, -?
Display a help message and exit.
The directory where character sets are installed. See Section 9.5,
"Character Set Configuration".
? --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?.
Use charset_name as the default character set. See Section 9.5,
"Character Set Configuration".
? --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, mysqladmin prompts for
Specifying a password on the command line should be considered
insecure. See Section 22.214.171.124, "End-User 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 using 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.
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
permissible values, see Section 4.2.2, "Connecting to the MySQL
? --relative, -r
Show the difference between the current and previous values when
used with the --sleep option. This option works only with the
? --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
? --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 using SSL and indicate where to find SSL keys and
certificates. See Section 126.96.36.199, "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
? --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:
The maximum number of seconds before connection timeout. The
default value is 43200 (12 hours).
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.
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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,
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For more information, please refer to the MySQL Reference Manual, which
may already be installed locally and which is also available online at
Oracle Corporation (http://dev.mysql.com/).
MySQL 5.0 12/16/2011 MYSQLADMIN(1)