#
  # We are assigning the result of kubectl_retry get nodes operation to the res
  # variable in that way, to prevent stopping the whole script on an error.
  #
  # Bash command substitution $(kubectl_...) removes all trailing whitespaces
  # which are important for line counting.
  # Use trick from https://unix.stackexchange.com/a/383411 to avoid
  # newline truncation.