1.安装wget

​yum install -y wget

【资料图】

2、下载rpm安装包

[root@nifi1 home]# wget http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

2.1 yum安装mysql 5.7

yum -y install mysql57-community-release-el7-10.noarch.rpm

2.2yum安装mysql-community-server

yum -y install mysql-community-server

安装失败由于MySQL GPG 密钥已过期导致的需要运行命令, 以2022年为例

rpm --import ​​https://repo.mysql.com/RPM-GPG-KEY-mysql-2022​​

yum -y install mysql-community-server

至此yum安装MySQL服务结束！

3.MySQL数据库设置

3.1启动MySQL

systemctl start mysqld.service

3.2查看MySQL运行状态

systemctl status mysqld.service

4.在日志文件中找出密码

grep "password" /var/log/mysqld.log

5.进入数据库

mysql -uroot -p # 回车后会提示输入密码

6.在日志文件中找出密码

grep "password" /var/log/mysqld.log

7.进入数据库

mysql -uroot -p # 回车后会提示输入密码

8.设置mysql密码

8.1修改变更，便于修改简单密码

set global validate_password_policy=0;

set global validate_password_length=1;

8.2修改密码

ALTER USER "root"@"localhost" IDENTIFIED BY "root";

8.3远程授权，便于使用navicat等远程客户端连接

grant all on *.* to root@"%" identified by "root";

9.登录测试

mysql -uroot -p