list top 20 pods ephemeral-storage used bytes

#!/bin/bash
  
function x()
{
echo "Namespace  Pod  Ephemeral-used" 
for i in $(kubectl get node -o=jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}')
do

 kubectl get --raw "/api/v1/nodes/$i/proxy/stats/summary" | jq -r '.pods[]| [ .podRef.namespace, .podRef.name, ."ephemeral-storage".usedBytes ]|@tsv'

done
}

x | column -t | (read -r; printf "%s\n" "$REPLY"; sort -rn -k3) | head -21

Sample output:

$ ./ephemeral.sh 
Namespace        Pod                                                        Ephemeral-used
kube-system      calico-node-zt7zc                                          150994944
kube-system      calico-node-2mb8k                                          145559552
default          ubuntu-69f89f9d9f-ckjjw                                    42373120
longhorn-system  csi-snapshotter-645cf6bd97-498w8                           10342400
longhorn-system  instance-manager-e-7a240608                                9494528
longhorn-system  longhorn-manager-xgvbc                                     8835072
default          nick-prometheus-stack-kube-state-metrics-5fbdc456c5-pzvnb  6811648
longhorn-system  longhorn-manager-zgltl                                     6414336
default          nick-prometheus-stack-grafana-6dcfc55c4d-bdpct             3809280
kong             ingress-kong-6c4bbfd7cc-fnq7v                              2703360
longhorn-system  csi-snapshotter-645cf6bd97-wg9j9                           2404352
default          nick-prometheus-adapter-69bb8b99c-7dsrg                    2048000
longhorn-system  instance-manager-e-6eaafb85                                1122304
longhorn-system  csi-attacher-676c598f8b-ckw4w                              774144
longhorn-system  csi-attacher-676c598f8b-mqnw8                              770048
longhorn-system  csi-resizer-5f549cd7-jcvl6                                 733184
kube-system      calico-kube-controllers-5847fdb695-k8r2n                   700416
longhorn-system  csi-provisioner-7877cd48c9-4ms95                           671744
default          nick-prometheus-stack-kube-operator-66b7f6fc5d-z4hsm       667648
default          prometheus-nick-prometheus-stack-kube-prometheus-0         618496

That’s all.