mysqladmin(1)
NAME
mysqladmin - client for administering a MariaB 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 servers 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-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 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-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 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 servers 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.
* --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 02110-1301 USA or see http://www.gnu.org/licenses/.
SEE ALSO
For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/
AUTHOR
MariaDB Foundation (http://www.mariadb.org/).
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
