centos7下使用wget命令安裝mysql

1.首先安裝wget命令:mysql

  yum -y install  wgetsql

2.下載mysql數據庫

  wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpmide

3.安裝mysql-community-release-el7-5.noarch.rpm包測試

  rpm -ivh mysql-community-release-el7-5.noarch.rpmspa

4.安裝mysqldebug

  yum install mysql-server
server

  以下圖,表示安裝成功
blog

  

5.安裝完畢後登陸mysql修改密碼get

  mysql -u root

  會有以下報錯

  

 

  6.把/var/lib/mysql的擁有者改成當前用戶:

   sudo chown -R root:root /var/lib/mysql

  7.啓動mysql: systemctl  start mysqld

   設置開機啓動:systemctl enable mysqld

          systemctl daemon-reload

  8.修改密碼  

    $ mysql -u root
   mysql > use mysql;
    mysql > update user set password=password(‘123456‘) where user=‘root‘;
    mysql > exit;
 9.須要更改權限才能實現遠程鏈接MYSQL數據庫
  能夠經過如下方式來確認:
  root#mysql -h localhost -uroot -p
  Enter password: ******
  Welcome to the MySQL monitor.   Commands end with ; or \g.
  Your MySQL connection id is 4 to server version: 4.0.20a-debug
  Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.
  mysql> use mysql; (此DB存放MySQL的各類配置信息)
  Database changed
  mysql> select host,user from user; (查看用戶的權限狀況)
  mysql> select host, user, password from user;
  +-----------+------+-------------------------------------------+
  | host      | user | password                                  |
  +-----------+------+-------------------------------------------+
  | localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
  | 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
  | localhost |      |                                           |
  +-----------+------+-------------------------------------------+
  4 rows in set (0.01 sec)
  由此能夠看出,只能以localhost的主機方式訪問。
  解決方法:
  mysql> Grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
  (%表示是全部的外部機器,若是指定某一臺機,就將%改成相應的機器名;‘root’則是指要使用的用戶名,)
  mysql> flush privileges;   (運行此句才生效,或者重啓MySQL)
  Query OK, 0 rows affected (0.03 sec)
  再次查看。。
  mysql> select host, user, password from user;
  +-----------+------+-------------------------------------------+
  | host      | user | password                                  |
  +-----------+------+-------------------------------------------+
  | localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
  | 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
  | localhost |      |                                           |
  | %         | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |
  +-----------+------+-------------------------------------------+
  4 rows in set (0.01 sec)
10.用第三方軟件測試鏈接切記:關閉防火牆
      
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