Generate pod manifest

k run nginx --image=nginx --port=80 --dry-run=client -o yaml

Explain manifest fields

k explain pod.spec.containers.ports

Run a temporary pod inside a cluster

# Shell into it.
k run alpine --image=alpine --rm -it -- sh

# Run a command in it.
k run alpine --image=alpine --rm -it --restart=Never --command -- \
env

k run alpine --image=alpine --rm -it --restart=Never --command -- \
wget -O- https://example.com --timeout 2

k run curl --image=curlimages/curl --rm -it --restart=Never --command -- \
curl -s -o /dev/null -w "%{http_code}" -L https://google.com

Copy files

k cp <pod>:/path/to/remote/file /path/to/local/file # or vice versa

Port forwarding

k port-forward <pod> 8080:8080 # tunnel: localhost -> k8s master -> k8s worker node

Get pod subnets

for node in $(k get --no-headers nodes | cut -d' ' -f1); do
  echo -ne "$node\t"
  k get node $node -o json | jq .spec.podCIDR
done