[系统运维]linux 安装mysql8.0.18

1.安装mysql依赖perl net-tools

?yum install perl net-tools -y

2.卸载mariadb(linux 默认安装mariadb)

rpm -qa | grep mariadb? ? ? #查询安装文件目录
rpm -e --nodeps 文件? ? ? ? ?#卸载文件     --nodeps 忽略依赖关系

3.安装mysql

?tar -xvf mysql-8.0.18-1.el7.x86_64.rpm-bundle.tar

?解压出来的包如上图，依次安装，顺序不能乱

• rpm -ivh mysql-community-common-8.0.18-1.el7.x86_64.rpm?
• rpm -ivh mysql-community-libs-8.0.18-1.el7.x86_64.rpm
• rpm -ivh mysql-community-client-8.0.18-1.el7.x86_64.rpm
• rpm -ivh mysql-community-server-8.0.18-1.el7.x86_64.rpm

4.启动mysql

systemctl start mysqld

5.查找密码并登录mysql

cat /var/log/mysqld.log | grep password

红色框内为初始密码

mysql? -u root -p

登录修改密码

ALTER user 'root'@'localhost' IDENTIFIED BY '123456';    #123456为密码

flush privileges;

修改mysql链接地址

use mysql;
update user set host='%' where user = 'root';
commit;
exit;

重启mysql 
systemctl restart mysqld