mysqladmin 是MySQL官方提供的shell命令行工具(mysql是連接工具)，其參數都需要在shell命令行上執行。
1.語法
mysqladmin [options] command1 command2
[root@node2 bin]# mysqladmin
--character-sets-dir= extended-status old-password --silent stop-slave
--compress flush-hosts password --sleep= --tls-version=
--connect-timeout= flush-logs --password --socket= --user=
--count= flush-privileges ping --ssl variables
create flush-status --plugin-dir= --ssl-ca= --verbose
debug flush-tables --port= --ssl-capath= version
--debug-check flush-threads --print-defaults --ssl-cert= --version
--debug-info --force processlist --ssl-cipher= --vertical
--default-auth= --help --protocol= --ssl-crl= --wait
--default-character-set= --host= refresh --ssl-crlpath= --wait-for-all-slaves
--defaults-extra-file= kill --relative --ssl-key=
--defaults-file= --local reload --ssl-verify-server-cert
--defaults-group-suffix= --no-beep shutdown start-slave
drop --no-defaults --shutdown-timeout= status
2.示例
2.1 create/drop databasename
[root@node2 bin]# mysqladmin --help | grep database
-f, --force Don't ask for confirmation on drop database; with
create databasename Create a new database
drop databasename Delete a database and all its tables
2.2 flush-XX
[root@node2 bin]# mysqladmin --help | grep flush
flush-all-statistics Flush all statistics tables
flush-all-status Flush status and statistics
flush-client-statistics Flush client statistics
flush-hosts Flush all cached hosts
flush-index-statistics Flush index statistics
flush-logs Flush all logs
flush-privileges Reload grant tables (same as reload)
flush-binary-log Flush binary log
flush-engine-log Flush engine log(s)
flush-error-log Flush error log
flush-general-log Flush general log
flush-relay-log Flush relay log
flush-slow-log Flush slow query log
flush-status Clear status variables
flush-table-statistics Clear table statistics
flush-tables Flush all tables
flush-threads Flush the thread cache
flush-user-statistics Flush user statistics
flush-user-resources Flush user resources
[root@node2 bin]# mysqladmin --help | grep reload
flush-privileges Reload grant tables (same as reload)
reload Reload grant tables
[root@node2 bin]# mysqladmin --help | grep fresh
refresh Flush all tables and close and open logfiles
2.3 連接管理（processlist,kill）、
[root@node2 bin]# mysqladmin processlist
+----+------+-----------+----+---------+------+-------+------------------+----------+
| Id | User | Host | db | Command | Time | State | Info | Progress |
+----+------+-----------+----+---------+------+-------+------------------+----------+
| 21 | root | localhost | | Query | 0 | Init | show processlist | 0.000 |
+----+------+-----------+----+---------+------+-------+------------------+----------+
2.4集羣方面管理（start-slave、stop-slave）
[root@node2 bin]# mysqladmin --help | grep slave
--wait-for-all-slaves
been sent to all connected slaves
wait-for-all-slaves FALSE
start-slave Start slave
stop-slave Stop slave
2.5 其他（status ,etxtended-status , password ,version）
[root@node2 bin]# mysqladmin password
New password:
Confirm new password:
[root@node2 bin]# mysqladmin extended-status
+--------------------------------------------------------------+--------------------------------------------------+
| Variable_name | Value |
+--------------------------------------------------------------+--------------------------------------------------+
| Aborted_clients | 0 |
| Aborted_connects | 0 |
.................
[root@node2 bin]# mysqladmin status
Uptime: 75156 Threads: 2 Questions: 22 Slow queries: 0 Opens: 16 Open tables: 10 Queries per second avg: 0.000
[root@node2 bin]# mysqladmin version
mysqladmin Ver 9.1 Distrib 10.5.2-MariaDB, for Linux on x86_64
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Server version 10.5.2-MariaDB
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /share/mariadb/mariadb10.5/etc/mysql.sock
Uptime: 20 hours 52 min 45 sec
Threads: 2 Questions: 24 Slow queries: 0 Opens: 16 Open tables: 10 Queries per second avg: 0.000
[root@node2 bin]# mysqladmin extended-status | grep max
| Connection_errors_max_connections | 0 |
| Innodb_checkpoint_max_age | 80827823 |
| Innodb_max_trx_id | 22 |
| Innodb_row_lock_time_max | 0 |
| Tc_log_max_pages_used | 0 |
————Blueicex 2020/2/28 18:51 [email protected]