MySQL : Basic usefull Command Part 2

11. How to reload/refresh MySQL Privileges?

# mysqladmin -u root -p reload;
# mysqladmin -u root -p refresh

12. How to shutdown MySQL server Safely?

# mysqladmin -u root -p shutdown

# /etc/init.d/mysqld stop
# /etc/init.d/mysqld start

13. Some useful MySQL Flush commands

# mysqladmin -u root -p flush-hosts
# mysqladmin -u root -p flush-tables
# mysqladmin -u root -p flush-threads
# mysqladmin -u root -p flush-logs
# mysqladmin -u root -p flush-privileges
# mysqladmin -u root -p flush-status

1. flush-hosts: Flush all host information from host cache.
2. flush-tables: Flush all tables.
3. flush-threads: Flush all threads cache.
4. flush-logs: Flush all information logs.
5. flush-privileges: Reload the grant tables (same as reload).
6. flush-status: Clear status variables
   
   

14. How to kill Sleeping MySQL Client Process?

 # mysqladmin -u root -p processlist

Enter password:
+----+------+-----------+----+---------+------+-------+------------------+
| Id | User | Host      | db | Command | Time | State | Info             |
+----+------+-----------+----+---------+------+-------+------------------+
| 5  | root | localhost |    | Sleep   | 14   |       |					 |
| 8  | root | localhost |    | Query   | 0    |       | show processlist |
+----+------+-----------+----+---------+------+-------+------------------+

# mysqladmin -u root -p kill 5

Enter password:
+----+------+-----------+----+---------+------+-------+------------------+
| Id | User | Host      | db | Command | Time | State | Info             |
+----+------+-----------+----+---------+------+-------+------------------+
| 12 | root | localhost |    | Query   | 0    |       | show processlist |
+----+------+-----------+----+---------+------+-------+------------------+

To Kill multiple:

# mysqladmin -u root -p kill 5,10

15. How to run multiple mysqladmin commands together?

# mysqladmin  -u root -p processlist status version

Enter password:
+----+------+-----------+----+---------+------+-------+------------------+
| Id | User | Host      | db | Command | Time | State | Info             |
+----+------+-----------+----+---------+------+-------+------------------+
| 8  | root | localhost |    | Query   | 0    |       | show processlist |
+----+------+-----------+----+---------+------+-------+------------------+
Uptime: 3801  Threads: 1  Questions: 15  Slow queries: 0  
Opens: 15  Flush tables: 1  Open tables: 8  Queries per second avg: 0.003
mysqladmin  Ver 8.42 Distrib 5.5.28, for Linux on i686
Copyright (c) 2000, 2012, 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          5.5.28
Protocol version        10
Connection              Localhost via UNIX socket
UNIX socket             /var/lib/mysql/mysql.sock
Uptime:                 1 hour 3 min 21 sec

16. How to Connect remote mysql server ?

# mysqladmin  -h 19x.1x.x5.22x -u root -p

17. How to execute command on remote MySQL server?

# mysqladmin  -h 19x.1x.x5.22x -u root -p status

18. How to start/stop MySQL replication on a slave server?

 # mysqladmin  -u root -p start-slave

# mysqladmin  -u root -p stop-slave

19. How to store MySQL server Debug Information to logs?

# mysqladmin  -u root -p debug

20. How to view mysqladmin options and usage ?

# mysqladmin --help