mysql問題-centos7中mysql遠程連接問題

1.起初裝上CentOS7后，mysql數據庫變為Mariadb數據庫。但實際是還是mysql.

2.用戶遠程連接該數據庫發現連接不了。然后關了SElinux，挺了firewall，發現還是不行。

3.查閱資料終於解決：

　　A.默認root是沒有密碼的，插入host數據 %，修改密碼：

$ mysql -u root
mysql> use mysql;
mysql> INSERT INTO user(host,user,password) VALUES('%','root','');
mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
mysql> FLUSH PRIVILEGES;

　 使用 slect host,user,password from user; 結果如下：

Database changed
MariaDB [mysql]> update user set password = password('cosmysql') where user='root';
Query OK, 3 rows affected (0.01 sec)
Rows matched: 5  Changed: 3  Warnings: 0

MariaDB [mysql]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

MariaDB [mysql]> select host,user,password from user; +-----------------------+------+-------------------------------------------+
| host                  | user | password                                  |
+-----------------------+------+-------------------------------------------+
| localhost             | root | *F2A7750541679FE9A1CC3ABD453EFC346084637C |
| localhost.localdomain | root | *F2A7750541679FE9A1CC3ABD453EFC346084637C |
| 127.0.0.1             | root | *F2A7750541679FE9A1CC3ABD453EFC346084637C |
| ::1                   | root | *F2A7750541679FE9A1CC3ABD453EFC346084637C |
| localhost             |      |                                           |
| localhost.localdomain |      |                                           |
| %                     | root | *F2A7750541679FE9A1CC3ABD453EFC346084637C |
+-----------------------+------+-------------------------------------------+
7 rows in set (0.00 sec)

   B.授權，否則會報 Access denied for user 'root'@'%' to database 'xxx'  的錯

grant all on xxxx.* to 'root'@'%' identified by 'password' with grant option;

xxxx代表創建的數據庫;這里的xxxx為mysql,你也可以用*代替xxxx.那樣遠程登陸就會擁有全部數據庫的訪問權限.
password為用戶密碼，在此為root的密碼

 

2015年10月18日20:48:53