mysqladmin

client for administering a MySQL server

Synopsis

mysqladmin [options] command [command-options] [command [command-options]] ...

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examples

source

            
  mysqladmin -u root -p shutdown

source

            
  mysqladmin -f -uroot -pnova drop nova


  mysqladmin -f -uroot -pnova drop quantum_linux_bridge


  mysqladmin -f -uroot -pnova drop cinder

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  mysqladmin -f -uroot -pnova drop nova

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  mysqladmin -uroot drop vnews


  mysqladmin -uroot create vnews


  mysql -uroot vnews < lib/create.sql

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  echo y | mysqladmin -ppassword
  drop root_mail


  mysqladmin -ppassword create root_mail

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.

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 6.1.2.4, “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.

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 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 13.7.5.30, “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:

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 4.2.3.4, “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 6.3.6.4, “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 6.1.2.1, “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 6.3.8.4, “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).

copyright

This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited.

The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing.

If this software or related documentation is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, the following notice is applicable:

U.S. GOVERNMENT RIGHTS Programs, software, databases, and related documentation and technical data delivered to U.S. Government customers are "commercial computer software" or "commercial technical data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to the restrictions and license terms set forth in the applicable Government contract, and, to the extent applicable by the terms of the Government contract, the additional rights set forth in FAR 52.227-19, Commercial Computer Software License (December 2007). Oracle USA, Inc., 500 Oracle Parkway, Redwood City, CA 94065.

This software is developed for general use in a variety of information management applications. It is not developed or intended for use in any inherently dangerous applications, including applications which may create a risk of personal injury. If you use this software in dangerous applications, then you shall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure the safe use of this software. Oracle Corporation and its affiliates disclaim any liability for any damages caused by use of this software in dangerous applications.

Oracle is a registered trademark of Oracle Corporation and/or its affiliates. MySQL is a trademark of Oracle Corporation and/or its affiliates, and shall not be used without Oracle’s express written authorization. Other names may be trademarks of their respective owners.

This software and documentation may provide access to or information on content, products, and services from third parties. Oracle Corporation and its affiliates are not responsible for and expressly disclaim all warranties of any kind with respect to third-party content, products, and services. Oracle Corporation and its affiliates will not be responsible for any loss, costs, or damages incurred due to your access to or use of third-party content, products, or services.

This document in any form, software or printed matter, contains proprietary information that is the exclusive property of Oracle. Your access to and use of this material is subject to the terms and conditions of your Oracle Software License and Service Agreement, which has been executed and with which you agree to comply. This document and information contained herein may not be disclosed, copied, reproduced, or distributed to anyone outside Oracle without prior written consent of Oracle or as specifically provided below. This document is not part of your license agreement nor can it be incorporated into any contractual agreement with Oracle or its subsidiaries or affiliates.

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 Oracle 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 Oracle. Oracle and/or its affiliates reserve any and all rights to this documentation not expressly granted above.

For more information on the terms of this license, or for details on how the MySQL documentation is built and produced, please visit MySQL Contact & Questions.

For additional licensing information, including licenses for third-party libraries used by MySQL products, see Preface and Legal Notices.

For help with using MySQL, please visit either the MySQL Forums or MySQL Mailing Lists where you can discuss your issues with other MySQL users.

For additional documentation on MySQL products, including translations of the documentation into other languages, and downloadable versions in variety of formats, including HTML and PDF formats, see the MySQL Documentation Library.

mysqladmin

[command-options]] ...
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

Oracle Corporation (http://dev.mysql.com/).

mysqladmin

Synopsis

add an example, a script, a trick and tips

examples

description

copyright

mysqladmin

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