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tpbowden
tpbowden

Reputation: 2090

Looking up a container's address via its hostname dynamically in Nginx

I'm currently trying to run two containers on a single host, one being an application (Ruby on Rails) and the other Nginx as a reverse proxy and cache. The app is running on TCP port 80. What I want to be able to do is bring down my application container, remove it and then bring it up again without having to restart nginx. The problem is that Nginx only seems to look up the IP of the container once, so if it goes down then back up at a different address then Nginx will just complain that there's nothing there.

I've tried a few things:

I'm not sure where else to look but none of these options work if the application is brought up on a different IP address. Is there something I'm missing making this impossible?

Thanks.

Upvotes: 2

Views: 418

Answers (1)

tpbowden
tpbowden

Reputation: 2090

Ended up reading through the 12 factor app which inspired me to remove the Nginx proxying to Rails upstream altogether, and instead used it as a proxy cache which has an upstream of the external DNS name.

Upvotes: 1

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