CentOS7 yum方式 安裝mysql 5.7.28步驟

CentOS7系統yum方式安裝MySQL5.7

最新的yum源可以去http://dev.mysql.com/downloads/repo/yum下載

1、獲取mysql官方yum repository 可安裝版的包；
    wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
2、安裝下載rpm包；
    yum -y install mysql57-community-release-el7-10.noarch.rpm
3、安裝mysql-community-server
    yum -y install mysql-community-server
4、啟動mysql;
    systemctl start  mysqld.service
    systemctl status  mysqld.service
5、登錄mysql,查找初始密碼；
    grep "password" /var/log/mysqld.log
6、臨時修改密碼策略，否則密碼要求復雜度較高，8位以上，大小寫字母加特殊符號；
    set global validate_password_policy=0;
    set global validate_password_length=1;

7、設置root密碼；
    ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
    set password=password('root');
    SHOW VARIABLES LIKE 'validate_password%';
8、卸載掉mysql的yum repository
    yum -y remove mysql57-community-release-el7-10.noarch

9、遠程連接關閉防火牆：
    systemctl status firewalld
    systemctl stop firewalld
10、修改用戶root登錄host配置；
    use mysql;
    update user set host='%' where user='root';