When I tried to run the official Mosquitto container on Kubernetes I couldn't get it to work with a configmap. Since Kubernetes 1.9.6 the configmaps are readonly, the directory where they are mounted to are also mounted readonly. The current mosquitto container breaks on this due the hardcoded VOLUME definition. I could mitigate this by mounting the config to somewhere else then /mosquitto but the VOLUME mount in the Dockerfile is just ugly. Also this container is way smaller!
The default configuration allows passwordless connections. Just do and you should be able to connect to localhost:1883:
docker run -it -p 1883:1883 lansible/mosquitto:latest
The repository contains a basic Docker Compose file which works with Swarm. Use this or use it as a good start and example how to use a password file.
cd examples/docker-compose
docker-compose up -d mosquittoNow you should be able to connect to port 31883 with the mosquitto:mosquitto credentials
The kubectl files in the examples/kubernetes I use myself to deploy. It uses a configmap for the configuration and it exposes mosquitto on Nodeport 31883 with a service.
kubectl apply -f examples/kubernetessNow you should be able to connect to port 31883 with the mosquitto:mosquitto credentials
Since this container is very minimal it misses the mosquitto_passwd utility but you can easily run the upstream container.
docker run -it -v $(pwd):/data eclipse-mosquitto mosquitto_passwd
# Create passwordfile
docker run -it -v $(pwd):/data eclipse-mosquitto mosquitto_passwd -c /data/passwordfile username
Mosquitto not starting, try to run the container locally:
docker run lansible/mosquitto:latest