able to check db connection host or name (not db name but the setting) ? django

Question

I am not trying to check the db name to the connection, I have multiple database setup in django and also used the database route to create a failover but I am wondering if I can get the name of the connection host or the name given to the settings...

for example

DATABASES = {
    'default': {  # trying to get this name 'default'
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'db_name',
        'USER': 'euser',
        'PASSWORD': 'password',
        'HOST': 'host', # trying to get this host name 'host'
        'PORT': 3306,
    },
    'node2': {  # trying to get this name 'node2'
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'db_name',
        'USER': 'euser',
        'PASSWORD': 'password',
        'HOST': 'host2',  # trying to get this host name 'host2'
        'PORT': 3306,
    },
}

Is it possible to get those names I commented out above? For my failover, I am trying to send an email if another db is being used, but it would be great if I can get especially the host so it would be easier on me

P.S. off topic, is it possible to change the name default to other names? I tried changing it and I would get errors. Seems like I must have at least one database setting name called default

Thanks in advance for any help.

Answer 1

So, doing:

import pprint  # Makes it sooo pretty :)
from django.db import connection
print(pprint.pformat(connection.settings_dict))

Will give you the current connection settings. For instance, the code above should print something like that:

{'ATOMIC_REQUESTS': False,
 'AUTOCOMMIT': True,
 'CONN_MAX_AGE': 600,
 'ENGINE': 'django.db.backends.postgresql',
 'HOST': 'localhost',
 'NAME': 'stack_overflow',
 'OPTIONS': {},
 'PASSWORD': '***',
 'PORT': '5432',
 'TEST': {'CHARSET': None, 'COLLATION': None, 'MIRROR': None, 'NAME': None},
 'TEST_NAME': 'stack_overflow_test',
 'TIME_ZONE': None,
 'USER': 'postgres'}

So you should be able to access the hostname just by doing connection.settings_dict['HOST']