Mysqladmin Tips

Here we can see some tips with mysqladmin tool

To check the status of mysqld

# mysqladmin -u root -pmysql ping

# service mysqld status

# mysqladmin -u root -pmysql status

To find mysql version

# mysqladmin -u root -pmysql version 

To view all the MySQL Server status variable and it s current value.

# mysqladmin -u root -pmysql extended-status

To display all MySQL server system variables and the values

# mysqladmin -u root -pmysql variables

To display all the running process/queries in the mysql database.

# mysqladmin -u root -pmysql processlist

# mysqladmin -u root -pmysql processlist -i 1  ---- run this command automatically every 1 second.

To create a DB

# mysqladmin -pmysql create DBtest

To Drop a DB

# mysqladmin -pmysql drop DBtest

To reload mysqld demon

# mysqladmin -pmysql reload 

# mysqladmin -pmysql refrsh

To stop mysql daemon

# mysqladmin -pmysql shutdow

Note: You can also use /etc/rc.d/init.d/mysqld stop to shutdown the server. To start the server, execute /etc/rc.d/init.d/mysql start

Mysql flush

# mysqladmin -pmysql flush-hosts 

# mysqladmin -pmysql flush-logs

# mysqladmin -pmysql flush-privileges

# mysqladmin -pmysql flush-status

# mysqladmin -pmysql flush-tables

# mysqladmin -pmysql flush-threads

flush-hosts: Flush all information in the host cache.

flush-privileges: Reload the grant tables (same as reload).

flush-status: Clear status variables.

flush-threads: Flush the thread cache.

To start and stop MySQL replication on a slave server

# mysqladmin -u root -pmysql stop-slave

# mysqladmin -u root -pmysql start-slave