Centos7下安装mysql8

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  1. 下载 (速度慢时可以去清华镜像下载)
  2. 上传到服务器(数据库服务器一般不能连接外网,所以需要通过这种方式安装)
  3. 解压

    • 高版本 tar

      [root@localhost ~]# tar -zxvf mysql-8.0.17-linux-glibc2.12-x86_64.tar.xz
      [root@localhost ~]# mv /usr/local/mysql-8.0.17-linux-glibc2.12-x86_64/ /usr/local/mysql
    • 低版本 tar

      [root@localhost ~]# xz -d mysql-8.0.17-linux-glibc2.12-x86_64.tar.xz
      [root@localhost ~]# tar xvf mysql-8.0.17-linux-glibc2.12-x86_64.tar -C /usr/local/
      [root@localhost ~]# mv /usr/local/mysql-8.0.17-linux-glibc2.12-x86_64/ /usr/local/mysql
  4. 添加用户并附加权限

    [root@localhost ~]# useradd mysql
    [root@localhost ~]# chown -R mysql.mysql /usr/local/mysql/
  5. 初始化 (注意控制台输出的账户和密码 hrKXDyFs?9#N)

    [root@localhost ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
    
  6. 配置

    [root@localhost ~]# mkdir /usr/local/mysql/logs
    [root@localhost ~]# touch /usr/local/mysql/logs/log.err
    [root@localhost ~]# touch /usr/local/mysql/data/localhost.localdomain.pid
    [root@localhost ~]# chown -R mysql.mysql /usr/local/mysql/
    
    [root@localhost ~]# vi /etc/my.cnf
    #修改
    [client]
    socket=/usr/local/mysql/mysql.sock
    default-character-set = utf8mb4
    
    [mysqld]
    datadir=/usr/local/mysql/data
    socket=/usr/local/mysql/mysql.sock
    symbolic-links=0
    sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION'
    max_connections=800
    character-set-server=utf8mb4
    collation-server=utf8mb4_general_ci
    default-authentication-plugin=mysql_native_password
    [mysqld_safe]
    log-error=/usr/local/mysql/logs/log.err
    pid-file=/usr/local/mysql/data/localhost.localdomain.pid
    !includedir /etc/my.cnf.d
    [root@localhost ~]# vi /etc/profile
    # 添加环境变量
    export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib
    # 使配置生效
    [root@localhost ~]# source /etc/profile
  7. 启动设置

    [root@localhost ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
    [root@localhost ~]# chkconfig --add /usr/local/mysql/support-files/mysql
  8. 启动

    [root@localhost ~]# systemctl start mysql
  9. 登录

    mysql -uroot -phrKXDyFs?9#N
  10. 修改密码后才能进行其他操作

    alter user 'root'@'localhost' identified by 'wangBin_123'

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