Kubernetes CleanUp script to delete failed pods which are more than 24 hours

cleanup-cronjob.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: cleaner
rules:
- apiGroups: [""]
  resources: ["pods","namespaces"]
  verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: cleaner
subjects:
- kind: ServiceAccount
  name: cleaner
  namespace: default
roleRef:
  kind: ClusterRole
  name: cleaner
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: cleaner
  namespace: default
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: cleaner
  namespace: default
spec:
  schedule: "0 0 * * *"
  jobTemplate:
    spec:
      template:
        spec:
          serviceAccountName: cleaner
          containers:
          - name: cleaner
            image: portainer/kubectl-shell:latest
            imagePullPolicy: IfNotPresent
            command:
            - /bin/bash
            - -c
            - /home/cleanup.sh
            volumeMounts:
            - name: scriptconfig
              subPath: cleanup.sh
              mountPath: /home/cleanup.sh
          restartPolicy: OnFailure
          volumes:
          - name: scriptconfig
            configMap:
              name: cleaner-config
              defaultMode: 0777
---
## Instantly create a cronjob
# kubectl create job --from=cronjob/cleaner cleaner-one -n default
apiVersion: v1
data:
  cleanup.sh: "#!/bin/bash\n\nfunction GetPods() {\n    shift\n    local arr=(\"$@\")\n
    \   if [[ $arr == \"\" ]]\n    then  \n        echo \"No Pod Scheduled for Deletion\"\n
    \   else\n        for i in ${!arr[@]}; do\n            echo -e \"\\nNo:  $i Pod:
    \ ${arr[$i]} Namespace: $NAMESPACE\"\n            kubectl delete pods \"${arr[$i]}\"
    --force --grace-period=0 -n $NAMESPACE || echo \"Unable to Delete.\"\n        done
    \n    fi\n}\nexport NAMESPACE=''\nexport a=$(kubectl get namespace | awk '{print
    $1}' | tail -n +2)\nfor i in $a; do echo \"Namespace: $i\" && export NAMESPACE=$i
    && podNames=$(kubectl get pods -n $NAMESPACE --sort-by=.metadata.creationTimestamp
    --field-selector status.phase=Failed -o go-template --template '{{range .items}}{{.metadata.name}}
    {{.metadata.creationTimestamp}}{{\"\\n\"}}{{end}}' | awk '$2 <= \"'$(date -Ins
    --utc | sed 's/+0000/Z/')'\" { print $1 }') && podNames=($podNames) && echo $podNames
    && GetPods \"${podNames[@]}\"  && echo -e '\\n\\n' && podNames='';done\n\n\npodNames=$(kubectl
    get pods -n $NAMESPACE --sort-by=.metadata.creationTimestamp --field-selector
    status.phase=Failed -o go-template --template '{{range .items}}{{.metadata.name}}
    {{.metadata.creationTimestamp}}{{\"\\n\"}}{{end}}' | awk '$2 <= \"'$(date -Ins
    --utc | sed 's/+0000/Z/')'\" { print $1 }') && podNames=($podNames) && echo $podNames"
kind: ConfigMap
metadata:
  namespace: default
  name: cleaner-config

cleanup.sh

#!/bin/bash

function GetPods() {
    shift
    local arr=("$@")
    if [[ $arr == "" ]]
    then  
        echo "No Pod Scheduled for Deletion"
    else
        for i in ${!arr[@]}; do
            echo -e "\nNo:  $i Pod:  ${arr[$i]} Namespace: $NAMESPACE"
            kubectl delete pods "${arr[$i]}" --force --grace-period=0 -n $NAMESPACE || echo "Unable to Delete."
        done 
    fi
}
export NAMESPACE=''
export a=$(kubectl get namespace | awk '{print $1}' | tail -n +2)
for i in $a; do echo "Namespace: $i" && export NAMESPACE=$i && podNames=$(kubectl get pods -n $NAMESPACE --sort-by=.metadata.creationTimestamp --field-selector status.phase=Failed -o go-template --template '{{range .items}}{{.metadata.name}} {{.metadata.creationTimestamp}}{{"\n"}}{{end}}' | awk '$2 <= "'$(date -Ins --utc | sed 's/+0000/Z/')'" { print $1 }') && podNames=($podNames) && echo $podNames && GetPods "${podNames[@]}"  && echo -e '\n\n' && podNames='';done