CentOs7离线安装Mysql(详细安装过程)

删除原有的Mariadb和mysql

rpm -qa|grep mariadb
rpm -e --nodeps mariadb-libs
rpm -qa | grep mysql

Mysql安装-下载mysql离线安装包

Downloads:mysql:5.7

mysql

解压后执行安装：

rpm -Uvh *.rpm --nodeps --force

Mysql配置

1. 首先关闭mysql服务：

service mysqld stop

2. 然后修改配置文件：

vi /etc/my.cnf

3. 接下来加入一句代码即可空密码登录mysql：

### Disabling symbolic-links is recommended to prevent assorted security risks
skip-grant-tables    
#添加这句话，这时候登入mysql就不需要密码
symbolic-links=0

4. 开启mysql服务：

service mysqld start

5. 空密码登录mysql：

mysql -u root -p    
#输入命令回车进入，出现输入密码提示直接回车

6. 设置mysql密码：

mysql> set password for root@localhost = password('123456');
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
mysql> flush privileges;  #更新权限
Query OK, 0 rows affected (0.00 sec)
mysql> set password for root@localhost = password('123456'); 
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>flush privileges; #更新权限
mysql>quit; #退出
service mysqld stop # 停止mysql服务, 恢复mysql配置
vim /etc/my.cnf     #修改配置文件
# Disabling symbolic-links is recommended to prevent assorted security risks
# skip-grant-tables # 注释掉这句话
symbolic-links=0
service mysqld start # 启动mysql服务
mysql -uroot -p # 输入新密码登录

7. 设置mysql开机自启
   systemctl enable mysqld