示例：安裝mysql

1、檢視是否安裝mysql

Yum list installed mysql*

Rpm –qa | grep mysql*

Locate mysql*

2、檢視yum源是否有mysql的安裝包

Yum list mysql*

3、安裝mysql客戶端

Yum install mysql

4、安裝mysql伺服器端

Yum install mysql-server

5、安裝mysql開發工具

Yum install mysql-devel

6、配置mysql字符集

/etc/my.cnf

Sudo gedit /etc/my.cnf

//最後一行新增 default –character-set = utf8

7、啟動mysql服務

Service mysqld start

/etc/init.d/mysqld start

新增一些配置：

檔案/etc/my.cnf

在[mysql]中新增

         init_connect='SET collation_connection = utf8_unicode_ci'

init_connect='SET NAMES utf8' 

character-set-server=utf8 

collation-server=utf8_unicode_ci 

skip-character-set-client-handshake

檔案/etc/my.cnf.d/client.cnf

在[client]中新增

default-character-set=utf8

檔案/etc/my.cnf.d/mysql-clients.cnf

在[mysql]中新增

default-character-set=utf8

錯誤：

         Job for mariadb.service failed because the control process exited with error code. See "systemctl status mariadb.service" and "journalctl -xe" for details.'

解決：

1、關閉selinux和防火牆

                  setenforce 0              關閉selinux

                  systemctl stop firewalld.service      關閉防火牆

2、檢查配置/etc/my.cnf

3、檢視日誌：cat /var/log/mariadb/mariadb.log

錯誤：

# mysql -uroot -p

Enter password:

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

//sudo mysqld_safe --skip-grant-tables &

解決：

systemctl stop mariadb.service      先關閉

使用進入安全模式：

mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

mysql -u root mysql

UPDATE user SET Password=PASSWORD('newpassword') where USER='root';

FLUSH PRIVILEGES;

Quit

systemctl stop mariadb.service

systemctl start mariadb.service

如果發現啟動超時，檢視下程序是否存在，存在kill

ps uaxww | grep -i mysql