Django on EC2 security group fo postgresql on RDS - django

Question

edited the DATABASES entry in my settings.py to be:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'Limbo',
'USER': '<username>',
'PASSWORD': '<password>',
'HOST': '<dbname>.<gibberish>.us-west-2.rds.amazonaws.com',
'PORT': '5432',
}
}
now when I .manage.py runserver 0.0.0.0:800, it says:
Performing system checks...
System check identified no issues (0 silenced).
then after a minute or two:
File
"/home/ec2-user///local/lib64/python2.7/site-packages/psycopg2/init.py", line 164, in connect
conn = _connect(dsn, connection_factory=connection_factory, async=async) django.db.utils.OperationalError: could not connect to
server: Connection timed out
Is the server running on host "..us-west-2.rds.amazonaws.com" (172.rest.of.ip) and
accepting
TCP/IP connections on port 5432?
I have made sure to include the access via 5432 incoming from my ec2's IP (verified with curl ifconfig.co) and the ip listed in the error message (starting with 172 above). perhaps I need to use a larger subnet (than 32)in the 172 source?
EDIT: same error when I run python limbo/manage.py migrate
EDIT2: if I allow 5432 connections from any IP in the security group it works, but as stated above, I am allowing my EC2's IP (according to curl ifconfig.co's return value. what other IP should I be including?

Answer 1

enter the following into the linux command line:
cd /path/to/djangoproj
screen
source <env>/bin/activate
then you should see the command line tool reads something like:
(<env>)[ec2-user#ip-172-31-26-243 djangoproj]$
see that section in the middle: ip-172-31-26-243, that's the local ip, use that in the security group settings. in this case, I used 172.31.26.243/32 as the incoming IP allowed
then try to runserver again