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怎么处理数据库ERROR 2003问题

发布时间:2021-12-20 13:35:41 所属栏目:MySql教程 来源:互联网
导读:这篇文章主要介绍怎么解决数据库ERROR 2003问题,在日常操作中,相信很多人在怎么解决数据库ERROR 2003问题问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答怎么解决数据库ERROR 2003问题的疑惑有所帮助!接下来,请跟着小编
这篇文章主要介绍“怎么解决数据库ERROR 2003问题”,在日常操作中,相信很多人在怎么解决数据库ERROR 2003问题问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”怎么解决数据库ERROR 2003问题”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!
 
[root@ora102 ~]# mysql -uroot -pchinabidding -h292.168.8.247
 
Warning: Using a password on the command line interface can be insecure.
 
排查问题:
 
1)网络是通的
 
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.8.247' (113)
 
[root@ora102 ~]# ping  192.168.8.247
 
PING 192.168.8.247 (192.168.8.247) 56(84) bytes of data.
 
64 bytes from 192.168.8.247: icmp_seq=1 ttl=64 time=0.510 ms
 
64 bytes from 192.168.8.247: icmp_seq=2 ttl=64 time=0.446 ms
 
64 bytes from 192.168.8.247: icmp_seq=3 ttl=64 time=0.475 ms
 
2)权限是没问题的
 
MySQL [(none)]> select host,user,password from mysql.user;
 
+-----------+------+-------------------------------------------+
 
| host      | user | password                                  |
 
+-----------+------+-------------------------------------------+
 
| localhost | root | *2548EFB13B516547C44482A519B886726A3B8E42 |
 
|%| root | *2548EFB13B516547C44482A519B886726A3B8E42 |
 
| 127.0.0.1 | root | *2548EFB13B516547C44482A519B886726A3B8E42 |
 
| ::1       | root | *2548EFB13B516547C44482A519B886726A3B8E42 |
 
3)vi /etc/my.cnfi 查看参数bind-address  是否设置成了  = 127.0.0.1
 
我压根没有设置这个参数,这个参数是默认是127.0.0.1,限制只能本地登录。
 
4)查看防火墙状态,如下,active的,防火墙的是开的。
 
bogon:root@~>service  iptables status
 
Redirecting to /bin/systemctl status  iptables.service
 
● iptables.service - IPv4 firewall with iptables
 
Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled)
 
Active: active (exited)since Wed 2017-12-06 15:01:37 CST; 2s ago
 
Process: 21617 ExecStop=/usr/libexec/iptables/iptables.init stop (code=exited, status=0/SUCCESS)
 
Process: 22369 ExecStart=/usr/libexec/iptables/iptables.init start (code=exited, status=0/SUCCESS)
 
Main PID: 22369 (code=exited, status=0/SUCCESS)
 
Dec 06 15:01:37 bogon systemd[1]: Starting IPv4 firewall with iptables...
 
Dec 06 15:01:37 bogon iptables.init[22369]: iptables: Applying firewall rules: [  OK  ]
 
Dec 06 15:01:37 bogon systemd[1]: Started IPv4 firewall with iptables.
 
查看端口,然后尝试去远端telnet 这个端口是否是同的。
 
MySQL [(none)]> show global variables like 'port';
 
+---------------+-------+
 
| Variable_name | Value |
 
+---------------+-------+
 
| port          | 3306  |
 
+---------------+-------+
 
1 row in set (0.00 sec)
 
telne果然是不通的
 
[root@ora102 ~]# telnet 192.168.8.247 3306
 
Trying 192.168.8.247...
 
telnet: connect to address 192.168.8.247: No route to host
 
在源段关闭防火墙:
 
bogon:root@~>service  iptables stop
 
Redirecting to /bin/systemctl stop  iptables.service
 
永久关闭:
 
bogon:root@~>chkconfig iptables on
 
再次在远程登陆,正常了。。。。
 
[root@ora102 ~]# mysql -uroot -pchinabidding -h292.168.8.247
 
Warning: Using a password on the command line interface can be insecure.
 
Welcome to the MySQL monitor.  Commands end with ; or g.
 
Your MySQL connection id is 21
 
Server version: 5.5.29-log Source distribution
 
Copyright (c) 2000, 2017, 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>
 
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