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.

       ·   create db_name

           Create a new database named db_name.

       ·   debug

           Tell the server to write debug information to the error log.

           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

           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,
           “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"

           As of MySQL 5.5.3, the new password can be omitted following the password command. In this case, mysqladmin prompts for the
           password value, which enables you to avoid specifying the password on the command line. Omitting the password value should be done
           only if password is the final command on the mysqladmin command line. Otherwise, the next argument is taken as the 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.

       ·   ping

           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.

       ·   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, “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 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 safemalloc, which
           is available only before MySQL 5.5.6.

       ·   Maximum memory used

           The maximum amount of memory allocated directly by mysqld. This value is displayed only when MySQL has been compiled with
           safemalloc, which is available only before MySQL 5.5.6.

       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] groups of an
       option file.  mysqladmin also supports the options for processing option files described at Section, “Command-Line Options that
       Affect Option-File Handling”.

       ·   --help, -?

           Display a help message and exit.

       ·   --bind-address=ip_address

           On a computer having multiple network interfaces, this option can be used to select which interface is employed when connecting to
           the MySQL server.

           This option is supported only in the version of mysqladmin that is supplied with MySQL Cluster. It is not available in standard
           MySQL Server 5.5 releases.

       ·   --character-sets-dir=path

           The directory where character sets are installed. See Section 10.5, “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'.

       ·   --debug-check

           Print some debugging information when the program exits.

       ·   --debug-info

           Print debugging information and memory and CPU usage statistics when the program exits.

       ·   --default-auth=plugin

           The client-side authentication plugin to use. See Section 6.3.6, “Pluggable Authentication”.

           This option was added in MySQL 5.5.9.

       ·   --default-character-set=charset_name

           Use charset_name as the default character set. See Section 10.5, “Character Set Configuration”.

       ·   --enable-cleartext-plugin

           Enable the mysql_clear_password cleartext authentication plugin. (See Section, “The Cleartext Client-Side Authentication
           Plugin”.) This option was added in MySQL 5.5.27.

       ·   --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.

       ·   --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, “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.

       ·   --plugin-dir=path

           The directory in which to look for plugins. It may be necessary to specify this option if the --default-auth option is used to
           specify an authentication plugin but mysqladmin does not find it. See Section 6.3.6, “Pluggable Authentication”.

           This option was added in MySQL 5.5.9.

       ·   --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 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 Server”.

       ·   --relative, -r

           Show the difference between the current and previous values when used with the --sleep option. 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. 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 using SSL and indicate where to find SSL keys and
           certificates. See Section, “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 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 The --set-variable format is deprecated and was removed in MySQL
       5.5.3. 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).


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