I’ve set up Nginx with SSL and a dockerized Spring Boot backend using PostgreSQL. However, reverse proxying returns network and SSL errors. What might be causing these issues?
In my experience, one important step is to ensure that the container’s network configuration is correctly aligned with your host’s firewall or routing settings. This means verifying that the Docker container is not only exposing the correct port but also that the host can effectively reach it on that port. I found that configuring Nginx with precise proxy settings, including using the appropriate proxy headers, helped ensure that the SSL termination was correctly handled. Additionally, reviewing both Nginx and Spring Boot logs provided clearer insights into any SSL handshake or proxy misconfigurations.
In my experience, the primary cause of such issues often lies in mismatches between the network settings of your host and the container. It is important to confirm that the containerized Spring Boot application is correctly bound to a specific port and accessible from the host. I had success by explicitly mapping internal ports and adjusting the proxy settings to use the container’s network interface. Additionally, verifying the SSL configuration ensured that certificates and cipher settings were consistent between Nginx and the backend, eliminating certificate mismatches and network errors.
hey, i fixed it by usin the container ip in my nginx cfg and double-checking the docker port mapping. also, ssl cert paths sometimes go wrong. check those, it might be your source of issues, hope this helps!
hey, i noticed that sometimes spring boot binding issues cause ssl handshake errors. i had troubles when it was only on localhost. maybe try checking if you’re targeting the right ip and port? also, any chance u enabled detailed logging to see if there’s extra info on cert misconfigs?