router.py

# coding: utf-8

from ldapdb.router import is_ldap_model, Router as _Router

class Router(object):

    def db_for_read(self, model, **hints):
        if is_ldap_model(model):
            return 'ldap_gold'
        return None

    def db_for_write(self, model, **hints):
        if is_ldap_model(model):
            return 'ldap_gold'
        return None

settings.py

DATABASES = {
   'default': {
       'ENGINE': 'mysql', 
       'NAME': 'sisweb', 
       'USER': 'pdgsisweb',    
       'PASSWORD': 'pdgsisweb#2010',    
       'HOST': '',
       'PORT': '',
   },
   'ldap_pdgr': {
       'ENGINE': 'ldapdb.backends.ldap',
       'NAME': "ldap://server1.pdgr.corp",
       'USER': "[email protected]",
       'PASSWORD': "passwd",
   },
   'ldap_gold': {
       'ENGINE': 'ldapdb.backends.ldap',
       'NAME': "ldap://sever2.goldfarb.corp",
       'USER': "[email protected]",
       'PASSWORD': "passwd",
   },
   'ldap_chl': {
       'ENGINE': 'ldapdb.backends.ldap',
       'NAME': "ldap://server3.chl.corp",
       'USER': "[email protected]",
       'PASSWORD': "passwd",
   },
}
DATABASE_ROUTERS = ['ldap_connector.Router']