问题
I has had two days searching and exploring solutions regarding the error 2003. Can't connect to mysql server on 'Server name'.
The firewall is off and I had added the port 3306, the one that mysql uses.
Any recommendation?
回答1:
Please refer this FAQ which describes how to solve this issue: http://faq.webyog.com/content/23/15/en/error-no-2003-can_t-connect.html
Error No. 2003: Can't connect to MySQL server on 'localhost' (or some other host)
simply means that connection is not possible for one of the following (or similar) reasons:
There is no MySQL server running at the specified host
Connection to the MySQL server is not allowed using TCP-IP. Check the 'skip-networking' setting in the MySQL configuration file (my.ini on Windows, my.cnf on Unix/Linux). It shall be commented out like '#skip-networking'. If it is not commented out, then do it and restart the MySQL server for the change to take effect. SQLyog needs to connect using TCP-IP.
Some networking issue prevents connection. It could be a network malconfiguration or a firewall issue.
When trying to connect to a MySQL server at an ISP this error message often indicates that direct connection to MySQL has been blocked. You must then use HTTP-tunneling or SSH-tunneling to connect.
回答2:
It worked for me.controll pannel->administrative tools->services->mysql and start mysql.Some times simple solution saves lot of time.
回答3:
Unless you are using other system
Please follow theses instructions
try to use wampserver to test your code
回答4:
normally means that there is no MySQL server running on the system . check your server running
回答5:
this could be due to firewalls of the system try below command and check
service iptables stop
回答6:
i have the same issue but i fix it. my hostname is DEBIAN, i just modify the file my.cnf ( for mysql) and set bindaddress : 0.0.0.0
this option say to mysql to listen all interfaces. restart your server and finish
回答7:
The SQL Sever might not be installed. Please refer this to install: [MySQL][1]https://dev.mysql.com/downloads/installer/
回答8:
if your question refer to can't connect to mysql on hosting (cpanel), i also had same problem. I also turn off firewall, but it doesn't solve my problem. Rather than using server name or domain name on Mysql Host Address, i using ip address given by hosting provider. And it works.
来源：https://stackoverflow.com/questions/19727432/error-no-2003-cant-connect-to-mysql-server