在node1节点上安装mysql，启动Hive时报错问题解决办法

在node1节点上安装了mysql，启动Hive时报错：

Caused by: java.sql.SQLException: Access denied for user ‘root’@’node1’ (using password: YES)

测试登录MySQL

1. 登录node1(本地节点)节点上的mysql

[root@node1 ~]#  mysql -h node1 -uroot -p123456
ERROR 1045 (28000): Access denied for user 'root'@'node1' (using password: YES)

登录本地数据库

[root@node1 ~]#  mysql -uroot -p123456
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.1.73 Source distribution
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>

查询用户表

mysql> select user,host,password from mysql.user;
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | node1     |                                           |
| root | 127.0.0.1 |                                           |
|      | localhost |                                           |
|      | node1     |                                           |
| root | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+------+-----------+-------------------------------------------+
6 rows in set (0.00 sec)

发现问题了。

先删除node1记录

mysql> delete from mysql.user where host='node1';
Query OK, 2 rows affected (0.05 sec)
mysql> select user,host,password from mysql.user;
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | 127.0.0.1 |                                           |
|      | localhost |                                           |
| root | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+------+-----------+-------------------------------------------+
4 rows in set (0.00 sec)

再删除密码为空的记录

mysql> delete from mysql.user where user is null;
Query OK, 0 rows affected (0.01 sec)
mysql> delete from mysql.user where password='';
Query OK, 2 rows affected (0.00 sec)
mysql> select user,host,password from mysql.user;
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+------+-----------+-------------------------------------------+
2 rows in set (0.00 sec)

最后对root授权

mysql> grant all privileges on *.* to root@'%' identified by '123456' with grant option;
Query OK, 0 rows affected (0.00 sec)

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

mysql> exit
Bye
[root@node1 ~]# mysql -h node1 -uroot -p123456
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.1.73 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>