vol-attach-check

kubectl get volumeattachments -o json | \
  jq -r '
    [.items[] | select(.status.attached==true) | .spec.nodeName] |
    group_by(.) |
    map({node: .[0], attached: length}) |
    .[]
  ' | \
  while read -r line; do
    node=$(echo "$line" | jq -r '.node')
    attached=$(echo "$line" | jq -r '.attached')
    limit=$(kubectl get csinode "$node" -o jsonpath='{.spec.drivers[?(@.name=="ebs.csi.aws.com")].allocatable.count}' 2>/dev/null)
    echo "$node | attached=$attached | limit=${limit:-unknown} | remaining=$(( ${limit:-0} - attached ))"
  done