Check if the service listening on port 80 is throwing any errors or logs containing the status codes. It is possible whatever is listening there might be having an issue. You can also confirm it’s not the issue by trying to reach the service from the network the device is on by using its IP address and port. That would also confirm the issue isn’t the proxy.
To be clear, are you deploying the Kerberos project exactly as described in the blog post you linked? Have you done any custom changes to the code? Do you see any further errors or warnings in the device logs?
Hi @gelbal
After your comments I made a new image to a Raspi 3. Unfortunately I get the same error. Do I need to enable tunneling on my router? That’s not mentioned in the tutorial.
If I read this right - you were able to deploy the app using the GitHub code, but weren’t able to get it to work with the Deploy with Balena button in the blog
Is that right?
I just clicked the deploy button in the blog post, the application built, and when I added a Pi3b+ the container ‘Main’ downloaded and ran, and the public URL opened OK. So I’m not sure how the tutorial can be far wrong? Could you let me know which part you think isn’t correct?
The only thing I can think of, is perhaps your build didn’t succeed when you used the deploy button? Did you see it say “build succeeded”?