CODEWITHSUNDEEP
docker
Grav
Grav

Reputation: 1724

Accessing services on the Docker host

If I start a docker container, I can for some reason access the docker host's services if I use the host's LAN ip, eg:

docker run -it ubuntu sh -c "apt-get update && apt-get install -y netcat && nc -z 192.168.196.135 3449"

But how do I know which IP to access the host on? Running ifconfig doesn't show any networks in the 192.x range. What if the host is disconnected from the LAN?

Upvotes: 0

Views: 318

Answers (1)

Rogério Peixoto
Rogério Peixoto

Reputation: 2257

You can add a entry to your container's /etc/hosts

docker run --add-host="dockerhost:192.168.196.135" -it ubuntu sh -c "apt-get update && apt-get install -y netcat && nc -z dockerhost 3449"

You also can use this docker discovery agent

If you need something more sophisticated then that you'll need a service discovery system like zookeeper.

Upvotes: 1

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