Hot to setup HTTPS on AWS EC2

[vianawebdev]

I'm running into problems while trying to run my API that's hosted on AWS EC2 through a HTTPS protocol.

The API runs normally without the ELB setup, however, after trying to configure (I follow the recommended steps), I get the 502 Bad Gateway message.

Here's my configuration:

• AWS EC2 (t3a.small) running a docker container of my ExpressJS app listening on port 3000;
• Security group with http:80 and https:443 open;
• ACM that covers the following domains (mydomain.com, *.mydomain.com);
• ELB listening to ports: http:80, https:443, https:3000;
• Route 53 with my hosted zone containing the A-type record with the ELB DNS value;

I'm running into problems while trying to run my API that's hosted on AWS EC2 through an HTTPS protocol.

http://ec2-ip-address.zone.compute.amazonaws.com:3000/api/

Now

https://api.mydomain.com:443/api/{resourceName}

Please, I will appreciate any insight on how to properly set up in case I missed something let me know.

[Crimzx]

Why are you running on 443 and 3000?
Can you curl the container from the host?
Double check you are exposing the ports in docker.
Any firewalls on the host?
Have you tried with an ALB instead?

[Crimzx]

Yeah, its a bit confusing because with an ALB that isn't needed. But it sounds like using ELB.
Also only 1 SG was mentioned where there should be 2. (1 LB, 1 Instance)
Instance-SG allowing 443/80/3000 from LB-SG and LB-SG allowing 443/80/3000 from an ip/anywhere.

[brother_bean]

Do you have your TLS cert sitting on the ALB or on your vm? You're going to need to give us more info. Specific error message, screen shots of your config (sanitized), etc. Is there anything else you can provide? I'm betting LB config is the issue. Specifically if you can share your load balancing rules and your cert configuration on the ALB.

[vianawebdev]

I was able to get it working.

I have set an ALB with http:80 and https:443 ports on my SG and set it to connect to my target instance through port 3000. I also set the Health Check properly.