container-images-stored

#!/usr/bin/env bash
# description: Show the container images stored in the cluster hosts

[ -z ${UTILSFILE} ] && source $(echo "$(dirname ${0})/../utils")

if oc auth can-i debug node >/dev/null 2>&1; then
  msg "Checking container images stored in the cluster (${BLUE}using oc debug, it can take a while${NOCOLOR})"
  # shellcheck disable=SC2016
  for node in $(oc get nodes -o go-template='{{range .items}}{{$node := .}}{{range .status.conditions}}{{if eq .type "Ready"}}{{if eq .status "True"}}node/{{$node.metadata.name}}{{"\n"}}{{end}}{{end}}{{end}}{{end}}'); do
    # See https://medium.com/@robert.i.sandor/getting-started-with-parallelization-in-bash-e114f4353691
    ((i = i % PARALLELJOBS))
    ((i++ == 0)) && wait
    (
      ocdebugorwait # Pause for no OC debug running
      oc debug --image="${OCDEBUGIMAGE}" "${node}" -- chroot /host sh -c "crictl images -o json" 2>/dev/null | jq -r .images[].repoTags[]
    ) &
  done | sort -u
  wait
  exit ${OCINFO}
else
  msg "Couldn't debug nodes, check permissions"
  exit ${OCSKIP}
fi
exit ${OCUNKNOWN}