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在Linux系统(CentOS为例)中安装mysql的步骤如下:
# 1.下载mysql57 wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm # 2.安装下载好的rpm包 yum -y install mysql57-community-release-el7-10.noarch.rpm # 3.安装mysql-community-server yum -y install mysql-community-server --nogpgcheck # 4.启动mysql服务 systemctl start mysqld.service # 5.查看mysql服务状态 systemctl status mysqld.service # 6.放行3306端口 firewall-cmd --add-port=3306/tcp --zone=public --permanent firewall-cmd --reload
# 7.获取mysql安装时生成的随机密码(上图)
grep "password" /var/log/mysqld.log
# 8.登录mysql(如果随机密码中有特殊字符 需要在特殊字符前加\进行转译)
mysql -uroot -p密码
# 9.在修改密码前 修改mysql密码验证规则 避免过于简单的密码设置失败(可选)
SET global validate_password_policy=0;
SET global validate_password_length=1;
# 10.设置新密码
SET password FOR 'root'@'localhost' = 'your_new_pwd';
# 11.设置为任意ip可访问(也可指定ip)
RENAME user 'root'@'localhost' TO 'root'@'%';
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