More K8s insights using kubectl

From my IBM colleague: -

Get the name of the all the nodes’ name, os image, os architecture, pod cidrs, internal and external ip address

kubectl get nodes -o custom-columns='NODE-NAME:.metadata.name,OS-IMAGE:.status.nodeInfo.osImage,OS-ARCH:.status.nodeInfo.architecture,POD-CIDRs:.spec.podCIDRs[*],INTERNAL-IP:.status.addresses[?(@.type=="InternalIP")].address,EXTERNAL-IP:.status.addresses[?(@.type=="ExternalIP")].address'

which, for me, shows: -

NODE-NAME               OS-IMAGE             OS-ARCH   POD-CIDRs       INTERNAL-IP    EXTERNAL-IP

sideling1.example.com   Ubuntu 20.04.2 LTS   amd64     10.244.0.0/24   10.51.10.109   <none>

sideling2.example.com   Ubuntu 20.04.2 LTS   amd64     10.244.1.0/24   10.51.12.45    <none>