If you want multiple Docker Containers to talk to each other, they can form a Bridge Network. Each Container Network has its own Subnet mask to distribute IP addresses. The default subnet for a Docker Network is 172.17.0.0/16
In this article, we are going to discuss the different ways you can use to know the IP address of a Docker Container.
Method 1: Using the Bash
Start the Bash of the Container.
sudo docker exec -it 6cb599fe30ea bash
Running the bash
Install iproute2 to use the ip command.
apt-get install iproute2
Use this command to get the IP address.
ip add | grep global
Method 1: Using the Bash
Method 2: Direct Command
You can get the IP address of the Docker Container directly using this command. You need to have the Container ID to use this method.
sudo docker exec -it 6cb599fe30ea ip addr | grep global
Method 2: Direct Command
Method 3: Using Docker Inspect
You can also use the Docker Inspect command to return the IP address of the Docker Container.
sudo docker inspect --format '{{ .NetworkSettings.IPAddress }}' 6cb599fe30ea
Method 3: Using Docker Inspect
To conclude, in this article we discussed three different ways to find out the IP address of a Docker Container. Methods 2 and 3 require less effort and using a single line command, you can easily find out the IP address of the container if you have it’s Container ID.