tasty-kube

Trigger pod restarts for a Deployment

kubectl patch deployment test-server -p '{"spec":{"template":{"metadata":{"annotations":{"myhack/timehack": "timestamp"}}}}}'

sort pods by node names

kubectl get pods --all-namespaces -o=custom-columns=NAME:.metadata.name,NAMESPACE:.metadata.namespace,NODE:.spec.nodeName --sort-by=.spec.nodeName

FAQ

• failed to create sandbox means that the kubelet can't bring up the pause container or CNI started causing IP to change.

Docker Hub login for KIND

docker login

for node_name in $(docker ps | awk 'NR>1 {print $NF}'); do
  # copy the config to where kubelet will look
  docker cp "$HOME/.docker/config.json" "${node_name}:/var/lib/kubelet/config.json"
  # restart kubelet to pick up the config
  docker exec "${node_name}" systemctl restart kubelet.service
done

Delete job pods

kubectl delete pod --field-selector=status.phase==Succeeded -A
kubectl delete pod --field-selector=status.phase==Failed -A