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, create and drop databases, and more.

Invoke mysqladmin like this:

shell> mysqladmin [options] command [command-options] [command [command-options]] ...

mysqladmin supports the following commands:

•   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.

•   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 4.9, “Password Hashing in MySQL 4.1”.)

•   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.

    If new-password 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 not the same as 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 5.4.16, “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 8.4, “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 code. 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 code. 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 7.1, “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=num, -c num

    The number of iterations to make. This works only with --sleep (-i).

•   --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

    Use charset as the default character set. See Section 7.1, “The Character Set Used for Data and Sorting”.

•   --force, -f

    Do not ask for confirmation for the drop database 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.

•   --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 -i. 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 again and again, sleeping for delay seconds in between.

•   --socket=path, -S path

    The socket file to use for the connection.

•   --user=user_name, -u user_name

    The MySQL username to use when connecting to the server.

•   --verbose, -v

    Verbose mode. Print out more information on 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 an option 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 options:

•   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 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. However, this syntax is now deprecated, and should no longer be used.

SEE ALSO
msql2mysql(1), myisamchk(1), myisamlog(1), myisampack(1), mysql(1), mysql.server(1), mysql_config(1), mysql_fix_privilege_tables(1), mysql_zap(1), mysqlaccess(1), mysqlbinlog(1), mysqlcheck(1), mysqld(1), mysqld_multi(1), mysqld_safe(1), mysqldump(1), mysqlhotcopy(1), mysqlimport(1), mysqlmanager(1), mysqlshow(1), perror(1), replace(1), safe_mysqld(1)

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.