ncarlier / kong-docker-daemon

This is a sidekick docker daemon used to automatically declare upstreams and targets into Kong.

Kong Docker Daemon

This is a sidekick Docker daemon used to automatically declare upstreams and targets into Kong.

Usage

Start the sidekick container:

$ docker run -d \
    --volume /var/run/docker.sock:/var/run/docker.sock \
    ncarlier/kong-docker-daemon

Now if you start a container exposing a port and having the label kong.upstream, this container IP and PORT will be declared in Kong as a target for the labeled upstream.

Example:

$ docker run -d \
    --label "kong.upstream:sample.foo" \
    infrastructureascode/hello-world

Demo

You can try the demonstration by using the following command:

$ make deploy logs

This command will deploy the following Docker stack:

• A PostgreSQL instance
• A Kong instance using PostgreSQL as database backend
• A Konga instance allowing you to explore and configure Kong with a pretty GUI (http://localhost:1337)
• A HelloWorld sample API backend with sample.foo as upstream name
• And this sidekick daemon

The sidekick daemon should create the upstream sample.foo into Kong and add the container IP and port as an active target of this upstream. If you play with the status of this sample service you should see impacts onto the Kong configuration.

Example:

$ curl -XGET http://localhost:8001/upstreams/sample.foo/targets/active | jq .
$ docker-compose scale sample=2
$ curl -XGET http://localhost:8001/upstreams/sample.foo/targets/active | jq .
$ docker-compose scale sample=1
$ curl -XGET http://localhost:8001/upstreams/sample.foo/targets/active | jq .
$ docker-compose scale sample=0
$ curl -XGET http://localhost:8001/upstreams/sample.foo/targets/active | jq .
$ ...

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