CentOS 8 安装 MySql并设置允许远程连接的方法
16lz
2021-12-16
下载，安装先检查系统中是否有mysql ,MariaDB,如有,先卸载
rpm -qa | grep mysqlrpm -qa | grep mariadb
执行卸载如有mysql同理卸载方法相同
remove mariadb-libs-5.5.52-1.el7.x86_64
yum install -y perl.x86_64yum install -y libaio.x86_64yum install -y net-tools.x86_64yum install -y libtinfo*yum install -y libncurses*
wget -P /tmp http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-common-5.7.31-1.el7.x86_64.rpmwget -P /tmp http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-libs-5.7.31-1.el7.x86_64.rpmwget -P /tmp http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-client-5.7.31-1.el7.x86_64.rpmwget -P /tmp http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-community-server-5.7.31-1.el7.x86_64.rpm
rpm -ivh mysql-community-common-5.7.31-1.el7.x86_64.rpm rpm -ivh mysql-community-libs-5.7.31-1.el7.x86_64.rpmrpm -ivh mysql-community-client-5.7.31-1.el7.x86_64.rpmrpm -ivh mysql-community-server-5.7.31-1.el7.x86_64.rpm
systemctl restart mysqld.service
systemctl status mysqld.service
grep 'temporary password' /var/log/mysqld.log
mysql -u root -p
修改密码并开启远程连接
由于新版本的mysql升级了密码安全策略，如果一直使用默认密码，
很多功能都限制，包括修改安全策略，开启远程连接等功能；
所以还是要先修改密码，密码要求有大小写字母，数字，特殊字符的组合；先登录
mysql -u root -p
ALTER USER 'root'@'localhost' IDENTIFIED BY '~1QAZxsw2'
use mysql;update user set Host = '%' where Host = 'localhost' and User='root';flush privileges;
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload
systemctl status firewalld
firewall-cmd --query-port=6379/tcp
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