The Container Runtime Lab

Lab 1: Moving from Docker to Podman

If you are on Linux (Fedora/CentOS/RHEL), try this to see how seamless the switch is.

Install Podman:

`sudo dnf install -y podman`

Set the Alias:

`alias docker=podman`

Run a container (Notice no sudo!):

`docker run --rm -it alpine echo "I am running rootless!"`

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Lab 2: Debugging K8s with crictl

Since Docker is gone from K8s, use crictl (Container Runtime Interface Control).

List running pods on a K8s node:

`sudo crictl pods`

List images:

`sudo crictl images`

Note: The syntax is almost identical to Docker!