kubernetes-dump-all-resources.sh

#!/usr/bin/env bash

set -e

CONTEXT="$1"

if [[ -z ${CONTEXT} ]]; then
  echo "Usage: $0 KUBE-CONTEXT"
  exit 1
fi

NAMESPACES=$(kubectl --context ${CONTEXT} get -o json namespaces|jq -r '.items[].metadata.name')
RESOURCES=$(kubectl --context ${CONTEXT} api-resources --no-headers | awk '{ print $1 }')

rm -rf $CONTEXT/*

echo 'Getting resources list to dump'
echo '' > commands_to_run.sh
for ns in ${NAMESPACES};do
  for resource in ${RESOURCES};do    
    rsrcs=$(kubectl --context ${CONTEXT} -n ${ns} get -o json ${resource}|jq -r '.items[].metadata.name')
    for r in ${rsrcs};do
      dir="${CONTEXT}/${ns}/${resource}"
      mkdir -p "${dir}"
      echo "Resource: $ns -> $resource -> $r"
      echo "kubectl --context ${CONTEXT} -n ${ns} get -o yaml ${resource} ${r} > \"${dir}/${r}.yaml\"" >> commands_to_run.sh
    done
  done
done

if hash parallel 2>/dev/null; then
    echo "Dumping resources in parallel"
    parallel --eta commands_to_run.sh
else
    echo "Dumping resources one by one"
    sh commands_to_run.sh
fi
rm commands_to_run.sh