DevOps: Puppet, Docker, and Kubernetes

Returning low-level information about a container

While doing the debugging, automation, and so on, we will need the container configuration details. Docker provides the inspect command to get those easily.

Getting ready

Make sure the Docker daemon is running on the host and you can connect through the Docker client.

How to do it…

1. To inspect a container/image, run the following command:

   $ docker inspect [-f|--format="" CONTAINER|IMAGE [CONTAINER|IMAGE...]
   

2. We'll start a container and then inspect it:

   $ ID='docker run -d -i fedora /bin/bash'
   $ docker inspect $ID
   [{ 
       "Args": [], 
       "Config": { 
           "AttachStderr": false, 
           "AttachStdin": false, 
           "AttachStdout": false, 
           "Cmd": [ 
               "/bin/bash" 
           ], 
       .........
       .........
   }]
   

How it works…

Docker will look into ...