How to get a Docker container's IP address from the host

Question

Is there a command I can run to get the container\'s IP address right from the host after a new container is created?

Basically, once Docker creates the container, I

Answer 1

To get the IP address and host port of a container:

docker inspect containerId | awk '/IPAddress/ || /HostPort/'

Output:

    "HostPort": "4200"
                    "HostPort": "4200"
        "SecondaryIPAddresses": null,
        "IPAddress": "172.17.0.2",
                "IPAddress": "172.17.0.2",

Answer 2

Add this shell script in your ~/.bashrc or relevant file:

docker-ip() {
  docker inspect --format '{{ .NetworkSettings.IPAddress }}' "$@"
}

Then, to get an IP address of a container, simply do this:

docker-ip YOUR_CONTAINER_ID

For the new version of the Docker, please use the following:

docker-ip() {
        docker inspect --format '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' "$@"
}

Answer 3

I use this simple way

docker exec -it <container id or name> hostname -i

e.g

ubuntu@myhost:~$ docker exec -it 3d618ac670fe hostname -i
10.0.1.5

Answer 4

The --format option of inspect comes to the rescue.

Modern Docker client syntax is:

docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id

Old Docker client syntax is:

docker inspect --format '{{ .NetworkSettings.IPAddress }}' container_name_or_id

These commands will return the Docker container's IP address.

As mentioned in the comments: if you are on Windows, use double quotes " instead of single quotes ' around the curly braces.

Answer 5

docker inspect CONTAINER_ID | grep "IPAddress"

You can add -i to grep for ignoring the case then even the following will work:

docker inspect CONTAINER_ID | grep -i "IPaDDreSS"

Answer 6

docker inspect --format '{{ .NetworkSettings.IPAddress }}' <containername or containerID here>

The above works if the container is deployed to the default bridge network.

However, if using a custom bridge network or a overlay network, I found the below to work better:

docker exec <containername or containerID here> /sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'