docker-socket-proxy VS whoami

I just found this the other day. You might be interested I haven't done myself yet https://github.com/Tecnativa/docker-socket-proxy

I think you could provide access to the socket using a "docker-socket-proxy" container. It allows other containers to access the docker socket, you can even control which actions are allowed and which are not. You can use a bridge network for the communication to the socket-proxy container, so the socket-proxy container does not need to map/expose any ports. In the other container you need to set the "DOCKER_HOST" env variable accordingly, e.g. "DOCKER_HOST=tcp://mydockersockerproxycontainer:2375". https://github.com/Tecnativa/docker-socket-proxy

I use the container docker socket proxy

There are Docker socket proxys (like docker-socket-proxy 😉) that are made exactly for this. You can pass only read access to the socket and even restrict what resources can be read.

So far I have Traefik set up and tested (along with some security lockdowns https://github.com/Tecnativa/docker-socket-proxy). This is working well: I can manually create containers, get a cert, dynamic hostnames, etc.

May be not necessarily: https://github.com/Tecnativa/docker-socket-proxy

Many of you might already be familiar with Tecnativa's docker-socket-proxy which says:

version: "3.7" services: traefik: image: traefik:v2.6 command: # Entrypoints configuration - --entrypoints.web.address=:80 # Docker provider configuration - --providers.docker=true # Makes sure that services have to explicitly direct Traefik to expose them - --providers.docker.exposedbydefault=false # Use the secure docker socket proxy - --providers.docker.endpoint=tcp://socket_proxy:2375 # Default docker network to use for connections to all containers - --providers.docker.network=traefik_public # Logging levels are DEBUG, PANIC, FATAL, ERROR, WARN, and INFO. - --log.level=info ports: - 80:80 networks: - traefik_public - socket_proxy restart: unless-stopped depends_on: - socket_proxy # https://github.com/traefik/whoami whoami: image: traefik/whoami:v1.7.1 labels: # Explicitly instruct Traefik to expose this service - traefik.enable=true # Router configuration ## Listen to the `web` entrypoint - traefik.http.routers.whoami_route.entrypoints=web ## Rule based on the Host of the request - traefik.http.routers.whoami_route.rule=Host(`whoami.karvounis.tutorial`) - traefik.http.routers.whoami_route.service=whoami_service # Service configuration ## 80 is the port that the whoami container is listening to - traefik.http.services.whoami_service.loadbalancer.server.port=80 networks: - traefik_public # https://github.com/Tecnativa/docker-socket-proxy # Security-enhanced proxy for the Docker Socket socket_proxy: image: tecnativa/docker-socket-proxy:latest restart: unless-stopped environment: NETWORKS: 1 SERVICES: 1 CONTAINERS: 1 TASKS: 1 volumes: - /var/run/docker.sock:/var/run/docker.sock:ro networks: - socket_proxy networks: traefik_public: external: true socket_proxy: external: true

What do you want to see? If it's about the request and the headers, you could run a whoami service as target to see the headers.

Testing the expression in the linked GH issue it definitely works when using a whoami type backend (https://github.com/traefik/whoami) which just shows all the headers that are being sent.

An app called whoami. This is a dead simple go app that spits back header and IP information.

Example ``` FROM golang:1-alpine as builder

Use whoami to check yourself.

Launch a simple test container with the labels to see if traefik picks it up and routes according to the domain.

Unfortunately still doesn't work, even bypassing NGINX and just using a simple whoami go web server (https://github.com/traefik/whoami) directly running on linux (no docker) it's still reporting the RemoteAddr as 192.168.100.1:52061, this should be the IP address of the client.

version: '3.9' services: traefik: image: traefik:v2.6 command: - --providers.docker - --entrypoints.web.address=:80 - --entrypoints.websecure.address=:443 ports: - "80:80" - "443:443" volumes: - /var/run/docker.sock:/var/run/docker.sock whoami: image: traefik/whoami # https://github.com/traefik/whoami command: -name whoami labels: traefik.http.routers.whoami.rule: Host(`whoami.localhost`)

version: "3.7" services: traefik: image: traefik:v2.6 command: # Entrypoints configuration - --entrypoints.web.address=:80 # Docker provider configuration - --providers.docker=true # Makes sure that services have to explicitly direct Traefik to expose them - --providers.docker.exposedbydefault=false # Use the secure docker socket proxy - --providers.docker.endpoint=tcp://socket_proxy:2375 # Default docker network to use for connections to all containers - --providers.docker.network=traefik_public # Logging levels are DEBUG, PANIC, FATAL, ERROR, WARN, and INFO. - --log.level=info ports: - 80:80 networks: - traefik_public - socket_proxy restart: unless-stopped depends_on: - socket_proxy # https://github.com/traefik/whoami whoami: image: traefik/whoami:v1.7.1 labels: # Explicitly instruct Traefik to expose this service - traefik.enable=true # Router configuration ## Listen to the `web` entrypoint - traefik.http.routers.whoami_route.entrypoints=web ## Rule based on the Host of the request - traefik.http.routers.whoami_route.rule=Host(`whoami.karvounis.tutorial`) - traefik.http.routers.whoami_route.service=whoami_service # Service configuration ## 80 is the port that the whoami container is listening to - traefik.http.services.whoami_service.loadbalancer.server.port=80 networks: - traefik_public # https://github.com/Tecnativa/docker-socket-proxy # Security-enhanced proxy for the Docker Socket socket_proxy: image: tecnativa/docker-socket-proxy:latest restart: unless-stopped environment: NETWORKS: 1 SERVICES: 1 CONTAINERS: 1 TASKS: 1 volumes: - /var/run/docker.sock:/var/run/docker.sock:ro networks: - socket_proxy networks: traefik_public: external: true socket_proxy: external: true

Pywhoami is inspired by the whoami Go server by Traefik Labs. Send a request to one of the endpoints to get back details from your HTTP request. With pywhoami you can help answer questions like, what headers were added to my original request by a proxy server.