EC2安全组上的Django RDS上的PostgreSQL

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