Using service names in docker swarm

[FlyingPersian]

Hello,

I'm struggling to configure npm proxies using service names in docker swarm.

I've put NPM and my other services into the same overlay network. To test if it's working, i entered the container's console and pinged NPM successfully. Then, I created a proxy and used the same hostname I pinged earlier to setup the proxy. When I go to the URL, it gives me a 502 Bad gateway. When I used the IP instead of the hostname, it works.

What can I do to fix this? Is this even possible on docker swarm?

I found similar instructions on the NPM website: https://nginxproxymanager.com/advanced-config/

Somebody else described the process for docker swarm on reddit: https://www.reddit.com/r/selfhosted/s/GlNMq5YuI4

[gratiachristi95]

Use container service name and then put .localhost after it. I would suggest against doing it this way for security purposes. You should put it on a separate docker network so that your containers are isolated by networking. Here is the link That explains some best practices:

https://medium.com/container-chronicles/the-fundamentals-of-container-networking-best-practices-and-key-considerations-ebc3c8bf2691