Ubuntu Manpage: mysqladmin - client for administering a MariaDB server

Provided by: mariadb-client-10.3_10.3.39-0ubuntu0.20.04.2_amd64

NAME

       mysqladmin - client for administering a MariaDB server

SYNOPSIS

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

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 also includes information about the Event Scheduler.

• drop db_name

Delete the database named db_name and all its tables.

• extended-status

Display the server status variables and their values.

• flush-all-statistics

Flush all statistics tables.

• flush-all-status

Flush all status and statistics.

• flush-binary-log

Flush the binary log.

• flush-client-statistics

Flush client statistics.

• flush-engine-log

Flush engine log.

• flush-error-log

Flush error log.

• flush-general-log

Flush general query log.

• flush-hosts

Flush all information in the host cache.

• flush-index-statistics

Flush index statistics.

• flush-logs

Flush all logs.

• flush-privileges

Reload the grant tables (same as reload).

• flush-relay-log

Flush relay log.

• flush-slow-log

Flush slow query log.

• flush-status

Clear status variables.

• flush-table-statistics

Flush table statistics.

• flush-tables

Flush all tables.

• flush-threads

Flush the thread cache.

• flush-user-resources

Flush user resources.

• 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.

• 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"

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 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.

• reload

Reload the grant tables.

• refresh

Flush all tables and close and open log files.

• shutdown

Stop the server.

• start-all-slaves

Start all slaves.

• start-slave

Start replication on a slave server.

• status

Display a short server status message.

• stop-all-slaves

Stop all slaves.

• 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 MariaDB 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.

• 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 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.

• --character-sets-dir=path

The directory where character sets are installed.

• --compress, -C

Compress all information sent between the client and the server if both support compression.

• --connect-timeout=timeout

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´.

• --debug-check

Check memory and open file usage at exit..

• --debug-info

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

• --default-auth

Default authentication client-side plugin to use.

• --default-character-set=charset_name

Use charset_name as the default character set.

• --defaults-extra-file=filename

Set filename as the file to read default options from after the global defaults files has been read.
Must be given as first option.

• --defaults-file=filename

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 using FLUSH LOCAL or enabling
sql_log_bin=0 for the session.

• --no-beep, -b

Suppress the warning beep that is emitted by default for errors such as a failure to connect to the
server.

• --no-defaults

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-defaults

Print the program argument list and exit. This must be given as the first argument.

• --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.

• --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.

• --shutdown-timeouttimeout

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.

• --ssl

Enable SSL for connection (automatically enabled with other flags). Disable with --skip-ssl.

• --ssl-ca=name

CA file in PEM format (check OpenSSL docs, implies --ssl).

• --ssl-capath=name

CA directory (check OpenSSL docs, implies --ssl).

• --ssl-cert=name

X509 cert in PEM format (check OpenSSL docs, implies --ssl).

• --ssl-cipher=name

SSL cipher to use (check OpenSSL docs, implies --ssl).

• --ssl-key=name

X509 key in PEM format (check OpenSSL docs, implies --ssl).

• --ssl-crl=name

Certificate revocation list (check OpenSSL docs, implies --ssl).

• --ssl-crlpath=name

Certificate revocation list path (check OpenSSL docs, implies --ssl).

• --ssl-verify-server-cert

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

• 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

       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.

       You should have received a copy of the GNU General Public License along with the program; if not, write
       to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see
       http://www.gnu.org/licenses/.

AUTHOR

       MariaDB Foundation (http://www.mariadb.org/).

NAME

SYNOPSIS

DESCRIPTION

COPYRIGHT

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