53 lines
2.4 KiB
Markdown
53 lines
2.4 KiB
Markdown
nginx-proxy sets up a container running nginx and [docker-gen][1]. docker-gen generate reverse proxy configs for nginx and reloads nginx when containers they are started and stopped.
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See [Automated Nginx Reverse Proxy for Docker][2] for why you might want to use this.
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### Usage
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To run it:
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$ docker run -d -p 80:80 -v /var/run/docker.sock:/tmp/docker.sock jwilder/nginx-proxy
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Then start any containers you want proxied with an env var `VIRTUAL_HOST=subdomain.youdomain.com`
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$ docker run -e VIRTUAL_HOST=foo.bar.com ...
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Provided your DNS is setup to forward foo.bar.com to the a host running nginx-proxy, the request will be routed to a container with the VIRTUAL_HOST env var set.
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### Multiple Ports
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If your container exposes multiple ports, nginx-proxy will default to the service running on port 80. If you need to specify a different port, you can set a VIRTUAL_PORT env var to select a different one. If your container only exposes one port and it has a VIRTUAL_HOST env var set, that port will be selected.
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[1]: https://github.com/jwilder/docker-gen
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[2]: http://jasonwilder.com/blog/2014/03/25/automated-nginx-reverse-proxy-for-docker/
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### Multiple Hosts
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If you need to support multipe virtual hosts for a container, you can separate each enty with commas. For example, `foo.bar.com,baz.bar.com,bar.com` and each host will be setup the same.
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### Separate Containers
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nginx-proxy can also be run as two separate containers using the [jwilder/docker-gen](https://index.docker.io/u/jwilder/docker-gen/)
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image and the official [nginx](https://registry.hub.docker.com/_/nginx/) image.
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You may want to do this to prevent having the docker socket bound to a publicly exposed container service.
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To run nginx proxy as a separate container you'll need to have [nginx.tmpl](https://github.com/jwilder/nginx-proxy/blob/master/nginx.tmpl) on your host system.
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First start nginx with a volume:
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$ docker run -d -p 80:80 --name nginx -v /tmp/nginx:/etc/nginx/conf.d -t nginx
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Then start the docker-gen container with the shared volume and template:
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```
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$ docker run --volumes-from nginx \
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-v /var/run/docker.sock:/tmp/docker.sock \
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-v $(pwd):/etc/docker-gen/templates \
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-t docker-gen -notify-sighup nginx -watch --only-published /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
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```
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Finally, start your containers with `VIRTUAL_HOST` environment variables.
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$ docker run -e VIRTUAL_HOST=foo.bar.com ...
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