CentOS7离线安装MySQL的教程详解
时间：2021-06-17 09:18:53|栏目：Mysql|点击： 次
1.删除原有的mariadb，不然mysql装不进去
mariadb-libs-5.5.52-1.el7.x86_64 rpm -qa|grep mariadb rpm -e --nodeps mariadb-libs
1.在https://dev.mysql.com/downloads/mysql/选择为Red Hat Enterprise Linux 7 / Oracle Linux 7 ，把os的版本选择为all。
直接下载mysql-5.7.21-1.el7.x86_64.rpm-bundle.tar，所有的rpm包都在里面
rpm -ivh mysql-community-common-5.7.21-1.el7.x86_64.rpm rpm -ivh mysql-community-libs-5.7.21-1.el7.x86_64.rpm rpm -ivh mysql-community-devel-5.7.21-1.el7.x86_64.rpm rpm -ivh mysql-community-libs-compat-5.7.21-1.el7.x86_64.rpm rpm -ivh mysql-community-client-5.7.21-1.el7.x86_64.rpm rpm -ivh mysql-community-server-5.7.21-1.el7.x86_64.rpm
至此，mysql5.7所有文件安装完毕，接下来就是开启服务测试了。
1.首先关闭mysql服务：
service mysqld stop
2.然后修改配置文件：
vim /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
总结
