Online installation and configuration of mysql under centos

Online installation and configuration of mysql under centos
　　1. Install the mysql server
　　[java]
　　yum -y install mysql-server
　　2. Load the service start service
　　[java]
　　/etc/rc.d/init.d/mysqld start
　　3. Set the mysql service to start Self-starting
　　[java]
　　chkconfig mysqld on
　　If you are not sure whether it has been set to start automatically at boot, you can view it with the following command
　　[java]
　　chkconfig --list mysqld
　　(mysqld 0:off 1:off 2:on 3:on 4:on 5 :on 6:off) ← If 2--5 is on, it is OK
　　4. View the current mysql version information
　　[java]
　　mysql –version
　　5. Modify the mysql default encoding
　　[java]
　　vi
　　/etc/my.cnf ] added under:
　　[java]
　　default-character-set=utf8
　　added under [mysqld]:
　　[java]
　　character-set-server = utf8
　　init_connect='set names utf8'
　　Enter mysql to view the current encoding
　　[java]
　　mysql>show variables like '%character%';
　　6. Set access permissions and passwords
　　[java]
　　mysql> grant all privileges on *.* to 'root'@'%' identified by '123';
　　mysql> grant all privileges on *.* to 'root'@'localhost' identified by '123';
　　mysql> flush privileges;
　　can be viewed through the following code The currently set access permission status
　　[java]
　　select * from mysql.user;
　　7. Restart the mysql service
　　[java]
　　/etc/init. d/mysqld restart
　　8. Completely uninstall mysql
　　[java]
　　yum remove mysql mysql-server mysql-libs compat-mysql51
　　rm -rf /var/lib/mysql
　　rm /etc/my.cnf
　　to see if there is still mysql software
　　[java]
　　rpm -qa|grep mysql//If yes, continue to delete
　　rpm -ql mysql//Check the file location