*10 upstream timed out (110: Connection timed out) while reading response header from upstream with uwsgi

Question

I currently have a server setup with nginx and uwsgi with django This error doesn't happen until I try to change my rds instance

my fully error message is *10 upstream timed out (110: Connection timed out) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: xxx.xxx.xxx.xxx, request: "GET /load/ HTTP/1.1", upstream: "uwsgi://unix:/tmp/load.sock", host: "example.com", referrer: "https://example.com/"

I was using aws rds ( postgres ) which works perfectly fine. The only change I made is changing from regular postgres service to aurora postgres I didn't upgrade the db, from regular to aurora. I created a new aurora postgres . I got everything setup...changed host and everything in my django db setting . runserver locally works fine. It does connect to db with read and write. Works perfectly. But when I deploy to server, open up my domain. Anything ui related looks fine but db related, NO. Took awhile then of course the 504 gateway timeout. I went to checkout the nginx error log . That's the error message I found. Googled, tried a few settings other stackoverflow posts suggested such as adding single-interpreter = true into uwsgi.ini file. No luck.

Can someone please give me an idea where I should look into for this problem?

Thanks in advance.

Answer 1

try going to your rds instance, check its' security group setting. Happened to me once, too me a while to find out that the security group setting is the problem. I didn't recall setting up the security group but it restricted with local IP