mysqladmin man page
mysqladmin — client for administering a MariaB server
mysqladmin [options] command [command-arg] [command [command-arg]] ...
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.
This also includes information about the Event Scheduler.
- 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 MySQL 4.1) password-hashing format.
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"
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 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.
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.
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 MariaDB server has been running.
The number of active threads (clients).
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.
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 MariaDB 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 MariaDB 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, which can be specified on the command line or in the [mysqladmin] and [client] option file groups.
- --help, -?
Display help and exit.
The directory where character sets are installed.
- --compress, -C
Compress all information sent between the client and the server if both support compression.
Equivalent to --connect_timeout, see the end of this section.
- --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´.
Check memory and open file usage at exit..
Print debugging information and memory and CPU usage statistics when the program exits.
Default authentication client-side plugin to use.
Use charset_name as the default character set.
Set filename as the file to read default options from after the global defaults files has been read. Must be given as first option.
Set filename as the file to read default options from, override global defaults files. Must be given as first option.
- --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 MariaDB server on the given host.
- --local, -l
Suppress the SQL command(s) from being written to the binary log by enabling sql_log_bin=0 for the session.
Suppress the warning beep that is emitted by default for errors such as a failure to connect to the server.
Do not read default options from any option file. This must be given as the first argument.
- --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.
- --pipe, -W
On Windows, connect to the server via 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 or 0 for default to, in order of preference, my.cnf, $MYSQL_TCP_PORT, /etc/services, built-in default (3306).
Print the program argument list and exit. This must be given as the first argument.
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.
- --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.
Equivalent of --shutdown_timeout, see the end of this section.
- --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.
Enable SSL for connection (automatically enabled with other flags). Disable with --skip-ssl.
CA file in PEM format (check OpenSSL docs, implies --ssl).
CA directory (check OpenSSL docs, implies --ssl).
X509 cert in PEM format (check OpenSSL docs, implies --ssl).
SSL cipher to use (check OpenSSL docs, implies --ssl).
X509 key in PEM format (check OpenSSL docs, implies --ssl).
Certificate revocation list (check OpenSSL docs, implies --ssl).
Certificate revocation list path (check OpenSSL docs, implies --ssl).
Verify server's "Common Name" in its cert against hostname used when connecting. This option is disabled by default.
- --user=user_name, -u user_name
The MariaDB 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 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).
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2015 MariaDB Foundation
This documentation is free software; you can redistribute it and/or 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, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/
MariaDB Foundation (http://www.mariadb.org/).