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.
MySQL Enterprise. For expert advice on using server status variables, subscribe to the MySQL Network
Monitoring and Advisory Service. For more information see
http://www.mysql.com/products/enterprise/advisors.html
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 5.9, "Password Hashing as of MySQL 4.1".)
MySQL Enterprise. For expert advice on the security implications of using the old-password command,
subscribe to the MySQL Network Monitoring and Advisory Service. For more information see
http://www.mysql.com/products/enterprise/advisors.html
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"
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 5.4.21, "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.
MySQL Enterprise. For expert advice on using server system variables, subscribe to the MySQL Network
Monitoring and Advisory Service. For more information see
http://www.mysql.com/products/enterprise/advisors.html
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 9.4, "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 following options:
--help, -?
Display a help message and exit.
--character-sets-dir=path
The directory where character sets are installed. See Section 8.1, "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. This works only with the --sleep
option.
--debug[=debug_options], -# [debug_options]
Write a debugging log. The debug_options string often 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 8.1, "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 6.6, "Keeping
Your Password Secure".
--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.
--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.
--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 6.7.3, "SSL Command Options".
--user=user_name, -u user_name
The MySQL username 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 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 --set-variable=var_name=value or -O var_name=value
syntax. This syntax is deprecated.
COPYRIGHT
Copyright 1997-2007 MySQL AB
This documentation is NOT distributed under a GPL license. Use of this documentation is subject to
the following terms: You may create a printed copy of this documentation solely for your own personal
use. Conversion to other formats is allowed as long as the actual content is not altered or edited in
any way. You shall not publish or distribute this documentation in any form or on any media, except
if you distribute the documentation in a manner similar to how MySQL disseminates it (that is,
electronically for download on a Web site with the software) or on a CD-ROM or similar medium,
provided however that the documentation is disseminated together with the software on the same
medium. Any other use, such as any dissemination of printed copies or use of this documentation, in
whole or in part, in another publication, requires the prior written consent from an authorized
representative of MySQL AB. MySQL AB reserves any and all rights to this documentation not expressly
granted above.
Please email <docs@mysql.com> for more information.
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
MySQL AB (http://www.mysql.com/) This software comes with no warranty.
MySQL 5.0 07/04/2007 MYSQLADMIN(1)
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