MYSQLADMIN(1) | MySQL Database System | MYSQLADMIN(1) |
NAME¶
mysqladmin - client for administering a MySQL serverSYNOPSIS¶
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, to create and drop databases, and more. Invoke mysqladmin like this:shell> mysqladmin [options] command [command-arg] [command [command-arg]] ...
•create db_name
Create a new database named db_name.
•debug
Tell the server to write debug information to the error log. Format and content
of this information is subject to change.
This includes information about the Event Scheduler. See Section 20.4.5,
“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:
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.
shell> mysqladmin password "my new 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:
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
•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. For
information about option files used by MySQL programs, see Section 4.2.6,
“Using Option Files”.
•--help, -?
Display a help message and exit.
•--bind-address=ip_address
On a computer having multiple network interfaces, use this option to select
which interface to use for 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=dir_name
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
A hint about 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”.
•--defaults-extra-file=file_name
Read this option file after the global option file but (on Unix) before the user
option file. If the file does not exist or is otherwise inaccessible, an error
occurs. Before MySQL 5.5.8, file_name must be the full path name to the
file. As of MySQL 5.5.8, the name is interpreted relative to the current
directory if given as a relative path name.
•--defaults-file=file_name
Use only the given option file. If the file does not exist or is otherwise
inaccessible, an error occurs. Before MySQL 5.5.8, file_name must be
the full path name to the file. As of MySQL 5.5.8, the name is interpreted
relative to the current directory if given as a relative path name.
•--defaults-group-suffix=str
Read not only the usual option groups, but also groups with the usual names and
a suffix of str. For example, mysqladmin normally reads the
[client] and [mysqladmin] groups. If the --defaults-group-suffix=_other
option is given, mysqladmin also reads the [client_other] and
[mysqladmin_other] groups.
•--enable-cleartext-plugin
Enable the mysql_clear_password cleartext authentication plugin. (See
Section 6.3.7.5, “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.
•--no-defaults
Do not read any option files. If program startup fails due to reading unknown
options from an option file, --no-defaults can be used to prevent them
from being read.
•--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=dir_name
The directory in which to look for plugins. 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.
•--print-defaults
Print the program name and all options that it gets from option files.
•--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.
•--shared-memory-base-name=name
On Windows, the shared-memory name to use, for connections made using shared
memory to a local server. The default value is MYSQL. The shared-memory name
is case sensitive.
The server must be started with the --shared-memory option to enable
shared-memory connections.
•--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 6.3.9.4, “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¶
Copyright © 1997, 2015, Oracle and/or its affiliates. All rights reserved. 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 02110-1301 USA or see http://www.gnu.org/licenses/.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/).11/06/2015 | MySQL 5.5 |