Script to download data about the volume of resources in a cluster

report.sh

#!/usr/bin/env bash

set -eo pipefail

OUTPUT_DIR=output

mkdir -p $OUTPUT_DIR

resources=($(kubectl api-resources | tail -n +2 | awk '{ print $1 }'))
ignore=("bindings" "tokenreviews" "localsubjectaccessreviews" "selfsubjectaccessreviews" "selfsubjectrulesreviews" "subjectaccessreviews")

for i in "${resources[@]}"
do
   :
  if [[ ! " ${ignore[@]} " =~ " ${i} " ]]; then
    >&2 echo getting $i
    kubectl get "$i" --all-namespaces -o json > "$OUTPUT_DIR/$i.json"
  fi
done

for f in `find $OUTPUT_DIR -type f`
do
  echo $(cat $f | jq '.items | length') $(basename $f)
done


du -sh $OUTPUT_DIR/* | sort -h

rm -r $OUTPUT_DIR