7. Docker Storage

Activity 7.01: Storing Container Event (State) Data on a PostgreSQL Database

Solution:

1. Run the following commands to remove all the objects in your host:

   $ docker container rm -fv $(docker container ls -aq)
   $docker image rm $(docker image ls -q)

2. Get the volume names, and then remove all the volumes using the following commands:

   $docker volume ls
   $docker volume rm <volume names separated by spaces>

3. Get the network names and then remove all the networks using the following commands:

   $docker network ls
   $docker network rm <network names separated by spaces>

4. Open two terminals, one dedicated to seeing docker events --format '{{json .}}' in effect. The other one should be opened to execute the previously mentioned high-level steps.
5. In the first terminal, run the following command:

   docker events --format '{{json .}}'.

   You should get an output like the following:

   Figure 7.11: Output of the docker events command...