软件共享位置

1. 可以去网盘下载
   链接：https://pan.baidu.com/s/1DnP4ox6Ad2ur4MDiATn74Q?pwd=my7s
   提取码：my7s
2. 官网下载位置
   https://dev.mysql.com/downloads/mysql/

安装步骤如下

1. 上传软件包到服务器上

2. 解压软件包（中途报错可能是没有安装解压工具）
   tar -xvf mysql-8.0.28-1.el7.x86_64.rpm-bundle.tar
   

3. 安装解压好的rpm软件包
   3.1
   [root@dcc mysql]# rpm -ivh mysql-community-common-8.0.28-1.el7.x86_64.rpm --nodeps --force
   警告：mysql-community-common-8.0.28-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
   准备中… ################################# [100%]
   正在升级/安装…
   1:mysql-community-common-8.0.28-1.e################################# [100%]
   3.2.
   [root@dcc mysql]# rpm -ivh mysql-community-libs-8.0.28-1.el7.x86_64.rpm --nodeps --force
   警告：mysql-community-libs-8.0.28-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
   准备中… ################################# [100%]
   正在升级/安装…
   1:mysql-community-libs-8.0.28-1.el7################################# [100%]
   3.3
   [root@dcc mysql]# rpm -ivh mysql-community-client-8.0.28-1.el7.x86_64.rpm --nodeps --force
   警告：mysql-community-client-8.0.28-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
   准备中… ################################# [100%]
   正在升级/安装…
   1:mysql-community-client-8.0.28-1.e################### ( 57%)
   3.4
   [root@dcc mysql]# rpm -ivh mysql-community-server-8.0.28-1.el7.x86_64.rpm --nodeps --force
   警告：mysql-community-server-8.0.28-1.el7.x86_64.rpm: 头V4 RSA/SHA256 Signature, 密钥 ID 3a79bd29: NOKEY
   准备中… ################################# [100%]
   正在升级/安装…
   1:mysql-community-server-8.0.28-1.e# ( 4%)
   

4. 检查是否安装好mysql软件
   rpm -qa | grep mysql
   

5. 创建mysql用户
   chown mysql:mysql /var/lib/mysql -R
   

6. 开启mysqld服务设置开启自启动，查看mysqld运行状态。
   systemctl start mysqld.service
   systemctl enable mysqld
   systemctl status mysqld
   

7. 查看mysqld服务初始化密码
   cat /var/log/mysqld.log | grep password
   

8. 登录mysql并修改初始化密码
   [root@dcc ~]# mysql -uroot -p
   Enter password: 输入初始化密码
   

9. 进入数据库命令行下修改密码
   mysql> alter user root@localhost identified by ‘713Lwl…’;
   mysql> flush privileges;

10. 查看服务端口运行状态
    [root@dcc ~]# netstat -tunlp | grep mysql
    tcp6 0 0 :::3306 ::😗 LISTEN 11063/mysqld
    tcp6 0 0 :::33060 ::😗 LISTEN 11063/mysqld
    

11. 通过以下命令，关闭 firewall(防火墙）
    systemctl stop firewalld.service;
    systemctl disable firewalld.service;
    systemctl mask firewalld.service;