client for administering a MySQL server
add an example, a script, a trick and tips
mysqladmin -u root -p shutdown
mysqladmin -f -uroot -pnova drop nova
mysqladmin -f -uroot -pnova drop quantum_linux_bridge
mysqladmin -f -uroot -pnova drop cinder
mysqladmin -f -uroot -pnova drop nova
mysqladmin -uroot drop vnews
mysqladmin -uroot create vnews
mysql -uroot vnews < lib/create.sql
echo y | mysqladmin -ppassword
mysqladmin -ppassword create root_mail
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.
mysqladmin like this:
mysqladmin [options] command
supports the following commands. Some of the commands take
an argument following the command name.
Create a new
database named db_name.
Tell the server
to write debug information to the error log.
information about the Event Scheduler. See
Section 19.4.5, “Event Scheduler
database named db_name and all its tables.
server status variables and their values.
information in the host cache.
grant tables (same as reload).
threads. If multiple thread ID values are given, there must
be no spaces in the list.
This is like
the password command but stores the password using the old
(pre-4.1) password-hashing format. (See
Section 184.108.40.206, “Password Hashing in
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.
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:
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.
Do not use this command used if the server was started with
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.
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
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 220.127.116.11, “SHOW
tables and close and open log files.
replication on a slave server.
Display a short
server status message.
replication on a slave server.
server system variables and their values.
information from the server.
commands can be shortened to any unique prefix. For
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
mysqladmin status command result displays the
of seconds the MySQL server has been running.
of active threads (clients).
of questions (queries) from clients since the server was
of queries that have taken more than long_query_time
seconds. See Section 5.2.5, “The Slow Query
of tables the server has opened.
of flush-*, refresh, and reload commands the server
of tables that currently are open.
Memory in use
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
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.
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.
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 18.104.22.168, “Command-Line Options that
Affect Option-File Handling”.
help message and exit.
computer having multiple network interfaces, this option can
be used to select which interface is employed when
connecting to the MySQL server.
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.
directory where character sets are installed. See
Section 10.5, “Character Set
all information sent between the client and the server if
both support compression.
of iterations to make for repeated command execution if the
--sleep option is given.
debugging log. A typical debug_options string is
'd:t:o,file_name'. The default is
debugging information when the program exits.
debugging information and memory and CPU usage statistics
when the program exits.
client-side authentication plugin to use. See
Section 6.3.6, “Pluggable
option was added in MySQL 5.5.9.
charset_name as the default character set. See
Section 10.5, “Character Set
mysql_clear_password cleartext authentication plugin. (See
Section 22.214.171.124, “The Cleartext Client-Side
Authentication Plugin”.) This option was added in
Do not ask
for confirmation for the drop db_name command. With
multiple commands, continue even if an error
the MySQL server on the given host.
the warning beep that is emitted by default for errors such
as a failure to connect to the server.
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
a password on the command line should be considered
insecure. See Section 126.96.36.199, “End-User
Guidelines for Password Security”. You can use an
option file to avoid giving the password on the command
Windows, connect to the server using a named pipe. This
option applies only if the server supports named-pipe
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
option was added in MySQL 5.5.9.
port number to use for the connection.
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
difference between the current and previous values when used
with the --sleep option. This option
works only with the extended-status command.
silently if a connection to the server cannot be
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
connections to localhost, the Unix socket file to use, or,
on Windows, the name of the named pipe to use.
that begin with --ssl specify whether to
connect to the server using SSL and indicate where to find
SSL keys and certificates. See Section 188.8.131.52,
“SSL Command Options”.
user name to use when connecting to the server.
mode. Print more information about what the program
version information and exit.
output vertically. This is similar to
--relative, but prints output
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.
also set the following variables by using
--set-variable format is deprecated
and was removed in MySQL 5.5.3. syntax:
maximum number of seconds before connection timeout. The
default value is 43200 (12 hours).
maximum number of seconds to wait for server shutdown. The
default value is 3600 (1 hour).
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