centos-7安装mysql-8

参考：https://www.digitalocean.com/community/tutorials/how-to-install-mysql-on-centos-7

1.获取rpm

wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

2.安装rpm

sudo rpm -ivh mysql80-community-release-el7-1.noarch.rpm

3.安装mysql

sudo yum install mysql-server

4.修改配置文件

sudo vi /etc/my.cnf

5. 添加下面1行

[mysqld]
innodb_buffer_pool_size=64M ##新添加

6.启动mysql

sudo systemctl start mysqld

7.查看运行状态

sudo systemctl status mysqld

8.查看初始密码：

sudo grep 'temporary password' /var/log/mysqld.log

9.修改初始密码(必须包含数字，大小写字母个一个特殊字符)：

sudo mysql_secure_installation

10.登陆：

mysql -u root -p