JDBC Tutorials - Herong's Tutorial Examples - v3.12, by Dr. Herong Yang
mysqladmin - MySQL Admin Tool
This section describes how to use MySQL admin tool to check server status and other admin tasks.
If you want to know whether your MySQL server is alive, you can use the "mysqladmin" program in a command window as shown in this tutorial. Enter the MySQL "root" password when prompted.
herong> mysqladmin -u root -p ping mysqld is alive
The "mysqld is alive" message tells you that your MySQL server is running ok. If your MySQL server is not running, you will get a "connect ... failed" message.
You can also use "mysqladmin" program to check version number of your MySQL server in a command window as shown in the following tutorial:
herong> mysqladmin -u root -p version mysqladmin Ver 8.0.17 for macos10.14 on x86_64 Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Server version 8.0.17 Protocol version 10 Connection Localhost via UNIX socket UNIX socket /tmp/mysql.sock Uptime: 2 days 15 hours 19 min 35 sec Threads: 3 Questions: 17 Slow queries: 0 Opens: 124 Flush tables: 3 ...
If you want to know what else you can do with "mysqladmin", you should run the "-?" option:
herong> mysqladmin -? ... Administration program for the mysqld daemon. Usage: mysqladmin [OPTIONS] command command.... -c, --count=# Number of iterations to make. This works with -i (--sleep) only. ... Where command is a one or more of: (Commands may be shortened) create databasename Create a new database debug Instruct server to write debug information drop databasename Delete a database and all its tables extended-status Gives an extended status message flush-hosts Flush all cached hosts flush-logs Flush all logs flush-status Clear status variables flush-tables Flush all tables flush-threads Flush the thread cache flush-privileges Reload grant tables (same as reload) kill id,id,... Kill mysql threads password new-password Change old password to new-password, MySQL 4.1 hashing. old-password new-password Change old password to new-password in old format. ping Check if mysqld is alive processlist Show list of active threads in server reload Reload grant tables refresh Flush all tables and close and open logfiles shutdown Take server down status Gives a short status message from the server start-slave Start slave stop-slave Stop slave variables Prints variables available version Get version info from server
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