клиент для администрирования сервера MariaB (client for administering a MariaB server)
Описание (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-ssl
Flush SSL certificates.
• 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:
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
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). Forces
--protocol=tcp when specified on the command line without
other connection properties.
• --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. Forces
--protocol=socket when specified on the command line without
other connection properties; on Windows, forces
--protocol=pipe.
• --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.
• --tls-version=name,
Accepts a comma-separated list of TLS protocol versions. A
TLS protocol version will only be enabled if it is present in
this list. All other TLS protocol versions will not be
permitted.
• --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.
• --wait-for-all-slaves
Wait for the last binlog event to be sent to all connected
slaves before shutting down. This option is off by default.
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).
