Docker consul-template&nginx reverse proxy

Inspired by jwilder/nginx-proxy
This solution is intended to be used with Swarm Cluster
Consul-Template is used for listening Consul events and generating nginx config

Usage

To run it, you need to have next environment:

• Consul, DockerHub
• Registrator, DockerHub

When requirements are satisfied, run this:

docker run -d \
    --privileged \
    --restart always \
    --name proxy \
    -p 80:80 \
    -e CONSUL_ADDR=$(docker-machine ip local-consul) \
    -e "constraint:type==public"
    --network public \
    dmitrovskiy/docker-nginx-consul-template:1.10.1-0.16.0-alpine

An image exposes as 80, as 443(https)

Environment variables

• CONSUL_ADDR - ip address of Consul location
• CONSUL_PORT - Consul port. By default 8500
• IS_HTTPS - set as "1" if you want to use https. Also required CERT variable to be set
• CERT - name of certificate. For instance, if test.com is set, it will try to use /etc/nginx/certs/test.com.crt and /etc/nginx/certs/test.com.key. And of course you need to volume them or COPY before run

Running services

version: "2"
services:
    app:
        image: nginx
        ports:
            - 80
        environment:
            - 'SERVICE_80_NAME=web/app'
            - 'SERVICE_80_TAGS="Name":"app.local"'
            - 'constraint:type==app'
        networks:
            - public
networks:
    public:
        external: true

Running a service, there are some points which need to consider:

• You should declare service ports which are needed to be proxy reversed
• Each Docker-Compose service port is a separate service for Consul, so use SERVICE_$PORT prefix
• SERVICE_80_NAME - consul service name declaration. Should have web/ prefix
• SERVICE_80_TAGS - consul service tags. This solution is used to declare JSON options. Currently only Name supported which is needed for server domain definition

Contributing

If you any ideas or PR, I would be happy to disscuss it! :)