Centos7.4安装MySQL

1.安装环境

此教程适用于centos7.0及以上兼容版本的安装

2.实现方案

①运行以下命令

  • 安装MySQL5.7
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm;

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

(下面出错如果是秘钥过期执行下面语句  rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022)
yum -y install mysql-community-server; 
systemctl start  mysqld.service;

systemctl status mysqld.service;

yum -y remove mysql57-community-release-el7-10.noarch;

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

  • 安装MySQL8.0
wget https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm
yum -y install mysql80-community-release-el7-3.noarch.rpm
上面报错执行 rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
3.默认安装MySQL8.0,如果需要安装MySQL5.7的话需要修改/etc/yum.repos.d/mysql-community.repo配置文件
将mysql80中enabled属性改为0,并添加图中红框内代码(安装MySQL8.0跳过该步骤)
image.png
yum -y install mysql-community-server
systemctl start mysqld.service
cat /var/log/mysqld.log | grep password

大约等待3分钟,然后会生成一个root用户的随机密码

image

②复制该密码,mysql -u root -p
③粘贴随机密码,不显示密码,直接回车登录

image

设置密码策略

mysql5.7
set global validate_password_policy=0;
mysql8.0
set global validate_password.policy=0;

然后将随机密码修改成自己定义的密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '你想设置的密码';

③然后重新登录mysql,创建mysql用户

CREATE USER '你的用户名'@'%' IDENTIFIED BY '你的密码';

④对所有库授权

grant all on *.* to '你创建的用户名'@'%';

或者对指定库进行授权

grant all on库名.* to '你创建的用户名'@'%';

⑤刷新权限

flush privileges;

⑥开放3306端口

firewall-cmd --zone=public --add-port=3306/tcp --permanent 

⑦重启防火墙

firewall-cmd --reload

⑧navicat连接mysql

image

转载:centos7.0快速安装mysql

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