CentOS7离线安装Mysql(详细安装过程)

Mysql安装

下载mysql离线安装包

https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.27-1.el7.x86_64.rpm-bundle.tar

解压后执行安装：

cd /root/mysql-5.7.27-1.el7.x86_64.rpm-bundle

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