如何连接到另一台主机上的MySQL服务器？

Question

Django can simply connect to its own MySQL server by setting HOST and PORT in settings.py as '' (empty string):

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql', # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
        'NAME': 'dbname',                   # Or path to database file if using sqlite3.
        'USER': 'root',                      # Not used with sqlite3.
        'PASSWORD': 'root',                  # Not used with sqlite3.
        'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
        'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
    }
}

My question is how to make it able to connect another database on another host? Suppose my machine is 192.168.1.33 and another machine to be connected is 192.168.1.34 , both are on the same network. I've tried to set this as:

'HOST': '192.168.1.34',
'PORT': '3306',

and

'HOST': '192.168.1.34',
'PORT': '',

but both caused this OperationalError :

(2003, "Can't connect to MySQL server on '192.168.1.34'(10061)")

SOLUTION: credit @cdhowie

1. Config bind-address to the host you want in /etc/mysql/my.cnf

2. Create a new user for the host you want to give an access (if you don't have one).

3. Check privileges for that user (if access denied).

Answer 1

By default, Debian-based distros configure MySQL to bind to localhost only, which means that other hosts cannot connect to it. Fix your MySQL configuration and it will work.

Edit /etc/mysql/my.cnf and change this line:

bind-address = 127.0.0.1

To this:

bind-address = 0.0.0.0

This will expose MySQL to all network interfaces, so make sure that you have security measures in place if this server is exposed to untrusted hosts.