docker-compose mongo healthcheck failing - mongodb

Question

Hello my mongo health check is failing
below is my docker-compose file
version: "2.4"
services:
production-api:
build: .
environment:
- MONGO_URI=mongodb://mongodb:27017/productiondb
volumes:
- .:/app
ports:
- "3000:3000"
depends_on:
- mongodb
# condition: service_healthy
mongodb:
image: mongo
ports:
- "27017:27017"
# healthcheck:
# test: echo 'db.runCommand("ping").ok' | mongo mongo:27017/productiondb --quiet 1
# interval: 10s
# timeout: 10s
# retries: 5
And is there any way to pass MONGO_URI to health check as a variable?

Answer 1

you're healthcheck should look like this:
test: echo 'db.runCommand("ping").ok' | mongo localhost:27017/productiondb --quiet
the hostname mongo doesn't exist inside the mongodb container unless you specify hostname: mongo in your compose file or just simply use localhost which is more common, when doing healthchecks
the 1 after --quiet seems to be a typo which leads to [main] file [1] doesn't exist https://docs.mongodb.com/manual/reference/program/mongo/#cmdoption-mongo-quiet
see also:
Simple HTTP/TCP health check for MongoDB
Why does the docker-compose healthcheck of my mongo container always fail?
You can pass MONGO_URI to the healthcheck, by specifying it a second time:
mongodb:
..
environment:
- MONGO_URI=mongodb://mongodb:27017/productiondb
If you want to use one value for both, create an env_file and use it via:
env_file:
- mongo.env # wich contains `MONGO_URI=mongodb://..`