AdminMongo with docker-compose doesn't work - mongodb

Question

I'm trying to access to my mongo database on docker with adminmongo.
Here's my docker-compose.yml
version: '3'
services:
mongo:
image: mongo
volumes:
- ~/data:/data/db
restart: always
expose:
- 6016
adminmongo:
image: mrvautin/adminmongo
expose:
- 1234
links:
- mongo:mongo
When i do a docker-compose up everything works fine, adminmongo also return me this : adminmongo_1_544d9a6f954c | adminMongo listening on host: http://localhost:1234
But when i go to localhost:1234 my navigator is telling me this page doesn't exist.
Here's what a docker ps return me :
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9c27d4a89254 mrvautin/adminmongo "/bin/sh -c 'node ap…" 38 seconds ago Up 33 seconds 1234/tcp iris_adminmongo_1_544d9a6f954c
2a7496a8c56a mongo "docker-entrypoint.s…" 40 minutes ago Up 38 seconds 6016/tcp, 27017/tcp iris_mongo_1_7f00356a3adc

Answer 1

I've found 2 issues here:
1st: Exposing a port is not enough. expose is just documentation, you need to publish (bind) a port to the host to be reachable. This is how it's done:
ports:
- 1234:1234
2nd: you have to configure adminmongo to listen to 0.0.0.0 because by default it starts listening on 127.0.0.1 and this makes it accessible only inside the container itself. From the documentation page you've included in your question, the Configuration section states that this can be done by passing an environment variable:
All above parameters are usable through the environment which makes it very handy to when using adminMongo as a docker container! just run docker run -e HOST=yourchoice -e PORT=1234 ...
Since you are using docker-compose, this is done by the following:
environment:
- HOST=0.0.0.0
Working example:
version: '3'
services:
mongo:
image: mongo
volumes:
- ~/data:/data/db
restart: always
expose:
- 6016
adminmongo:
image: mrvautin/adminmongo
ports:
- 1234:1234
environment:
- HOST=0.0.0.0

Answer 2

Example of docker-compose works :
version: '3'
services:
server:
container_name: docker_api_web_container
image: docker_api_web
build: .
volumes:
- ./src:/usr/src/node-app/src
- ./package.json:/usr/src/node-app/package.json
environment:
- ENV=DEVELOPMENT
- PORT=4010
ports:
- '9000:4010'
depends_on:
- 'mongo'
mongo:
container_name: docker_mongo_container
image: 'mongo'
ports:
- '27017:27017'
adminmongo:
container_name: docker_adminmongo_container
image: mrvautin/adminmongo
links: ['mongo:mongo']
environment:
- HOST=0.0.0.0
ports:
- '1234:1234'

Answer 3

You have to expose your service to the outside world like this:
version: '3'
services:
mongo:
image: mongo
volumes:
- ~/data:/data/db
restart: always
adminmongo:
image: mrvautin/adminmongo
ports:
- 1234:1234
Now you can access your adminmongo by http://localhost:1234.
And you don't have to use links here.Since compose creates a network and joins all services in the compose files. You can access other containers with their service names.