CentOS 7 安装 mysql 8.0

官方文档

2.5.1 Installing MySQL on Linux Using the MySQL Yum Repository

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1. MySQL Product Archives

复制这个链接地址，并下载

wget https://repo.mysql.com//mysql80-community-release-el7-7.noarch.rpm

接下来，按照官方文档步骤操作即可

2. yum localinstall mysql80-community-release-el7-7.noarch.rpm

    已加载插件：fastestmirror
    正在检查 mysql80-community-release-el7-7.noarch.rpm: mysql80-community-release-el7-7.noarch
    mysql80-community-release-el7-7.noarch.rpm 将被安装
    正在解决依赖关系
    --> 正在检查事务
    ---> 软件包 mysql80-community-release.noarch.0.el7-7 将被 安装
    --> 解决依赖关系完成
    
    依赖关系解决
    	
    ==========================================================================================================================================================================================================
     Package                                                架构                                版本                               源                                                                    大小
    ==========================================================================================================================================================================================================
    正在安装:
     mysql80-community-release                              noarch                              el7-7                              /mysql80-community-release-el7-7.noarch                               10 k
    
    事务概要
    ==========================================================================================================================================================================================================
    安装  1 软件包
    
    总计：10 k
    安装大小：10 k
    Is this ok [y/d/N]: y
    Downloading packages:
    Running transaction check
    Running transaction test
    Transaction test succeeded
    Running transaction
      正在安装    : mysql80-community-release-el7-7.noarch                                                                                                                                                1/1 
      验证中      : mysql80-community-release-el7-7.noarch                                                                                                                                                1/1 
    
    已安装:
      mysql80-community-release.noarch 0:el7-7                                                                                                                                                                
    
    完毕！
   

3. yum repolist all | grep mysql

    mysql-cluster-7.5-community/x86_64           MySQL Cluster 7.5 Comm 禁用
    mysql-cluster-7.5-community-source           MySQL Cluster 7.5 Comm 禁用
    mysql-cluster-7.6-community/x86_64           MySQL Cluster 7.6 Comm 禁用
    mysql-cluster-7.6-community-source           MySQL Cluster 7.6 Comm 禁用
    mysql-cluster-8.0-community/x86_64           MySQL Cluster 8.0 Comm 禁用
    mysql-cluster-8.0-community-debuginfo/x86_64 MySQL Cluster 8.0 Comm 禁用
    mysql-cluster-8.0-community-source           MySQL Cluster 8.0 Comm 禁用
    mysql-connectors-community/x86_64            MySQL Connectors Commu 启用:    213
    mysql-connectors-community-debuginfo/x86_64  MySQL Connectors Commu 禁用
    mysql-connectors-community-source            MySQL Connectors Commu 禁用
    mysql-tools-community/x86_64                 MySQL Tools Community  启用:     96
    mysql-tools-community-debuginfo/x86_64       MySQL Tools Community  禁用
    mysql-tools-community-source                 MySQL Tools Community  禁用
    mysql-tools-preview/x86_64                   MySQL Tools Preview    禁用
    mysql-tools-preview-source                   MySQL Tools Preview -  禁用
    mysql57-community/x86_64                     MySQL 5.7 Community Se 禁用
    mysql57-community-source                     MySQL 5.7 Community Se 禁用
    mysql80-community/x86_64                     MySQL 8.0 Community Se 启用:    386
    mysql80-community-debuginfo/x86_64           MySQL 8.0 Community Se 禁用
    mysql80-community-source                     MySQL 8.0 Community Se 禁用
   

4. yum repolist enabled | grep mysql

    mysql-connectors-community/x86_64 MySQL Connectors Community                 213
    mysql-tools-community/x86_64      MySQL Tools Community                       96
    mysql80-community/x86_64          MySQL 8.0 Community Server                 386
   

5. yum install mysql-community-server

    ......
    已安装:
      mysql-community-libs.x86_64 0:8.0.32-1.el7                      mysql-community-libs-compat.x86_64 0:8.0.32-1.el7                      mysql-community-server.x86_64 0:8.0.32-1.el7                     
    
    作为依赖被安装:
      mysql-community-client.x86_64 0:8.0.32-1.el7    mysql-community-common.x86_64 0:8.0.32-1.el7    mysql-community-icu-data-files.x86_64 0:8.0.32-1.el7    net-tools.x86_64 0:2.0-0.25.20131004git.el7   
    
    作为依赖被升级:
      mysql-community-client-plugins.x86_64 0:8.0.32-1.el7                                                                                                                                                    
    
    替代:
      mariadb-libs.x86_64 1:5.5.68-1.el7                                                                                                                                                                      
    
    完毕！
   

6. mysql -V

   mysql  Ver 8.0.32 for Linux on x86_64 (MySQL Community Server - GPL)
   

7. 启动服务

   service mysqld status

   service mysqld start

   service mysqld status

8. 查询初始密码
   grep ‘temporary password’ /var/log/mysqld.log

   空的？因为之前安装过其他版本的 mysql ，只是 yum remove 了，删除残留数据再来！

   rm -rf /var/lib/mysql

   systemctl restart mysqld

   grep ‘temporary password’ /var/log/mysqld.log

    2023-03-23T09:04:09.354999Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: EhcDm23dq3/a