高版本Cent OS 8.2 安装mysql 8.0
Cent OS8.2 安装mysql 5.7 是报错的。
我们可以安装8.0
添加 MySQL 源
wget https://dev.mysql.com/get/mysql80-community-release-el8-1.noarch.rpm
安装 MySQL
yum install mysql-server
第四步：启动Mysql服务
systemctl start mysqld
初始化数据库
[root@iZbp18y9i1yyyw5r8cdpydZ chenhao]# mysql_secure_installation Securing the MySQL server deployment. Enter password for user root: VALIDATE PASSWORD COMPONENT can be used to test passwords and improve security. It checks the strength of password and allows the users to set only those passwords which are secure enough. Would you like to setup VALIDATE PASSWORD component? Press y|Y for Yes, any other key for No: y There are three levels of password validation policy: LOW Length >= 8 MEDIUM Length >= 8, numeric, mixed case, and special characters STRONG Length >= 8, numeric, mixed case, special characters and dictionary file Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 1 Using existing password for root. Estimated strength of the password: 100 Change the password for root ? ((Press y|Y for Yes, any other key for No) : y New password: Re-enter new password: Estimated strength of the password: 100 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? (Press y|Y for Yes, any other key for No) : y Success. Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? (Press y|Y for Yes, any other key for No) : n ... skipping. By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y - Dropping test database... Success. - Removing privileges on test database... Success. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y Success. All done! [root@iZbp18y9i1yyyw5r8cdpydZ chenhao]#
第五步：设置开机启动
[root@localhost ~]# systemctl enable mysqld
[root@localhost ~]# systemctl daemon-reload
进入 数据库 设置远程 连接
mysql -u root -p
[root@ZSSM01 ~]# mysql -h localhost -u root -p ##登录数据库，输入密码后完成登录
mysql> use mysql; ##选择 mysql 库
mysql> select user,host from user; ##查询连接配置
+------------------+-----------+
| user | host |
+------------------+-----------+
| mysql.infoschema | localhost |
| mysql.session | localhost |
| mysql.sys | localhost |
| root | localhost |
+------------------+-----------+
4 rows in set (0.00 sec)
mysql> update user set host='%' where user='root';##允许使用 root 账户进行远程登录
mysql> flush privileges; ##刷新设置
测试连接
修改密码命令
ALTER USER 'root'@'localhost' IDENTIFIED BY 'FFFddbbdd@2020';
通过这个命令初始化数据库
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