cleanIstio.sh

#!/bin/bash

if [ -z "$1" ]
  then
    echo "No argument supplied"
    exit 1
fi

ibmcloud ks cluster-addon-disable istio --cluster $1 -f

sleep 10

helm delete istio --purge --kube-context="$1"
kubectl delete ns istio-system --context="$1"

sleep 5

protos=( cm secrets sa)
for proto in "${protos[@]}"; do
  kubectl get "$proto" --all-namespaces --context="$1" | grep "istio" |  while read -r entry; do
    ns=$(echo "$entry" | awk '{print $1}')
    name=$(echo "$entry" | awk '{print $2}')
    echo "Deleting $proto with name: $name"
    kubectl delete "$proto" "$name" -n "$ns" --context="$1"
  done
done

protos=( clusterrolebinding clusterrole crd mutatingwebhookconfigurations validatingwebhookconfigurations )
for proto in "${protos[@]}"; do
  kubectl get "$proto" --context="$1" | grep "istio" |  while read -r entry; do
    name=$(echo "$entry" | awk '{print $1}')
    echo "Deleting $proto with name: $name"
    kubectl delete "$proto" "$name" --context="$1"
  done
done

$ISTIO/istio/samples/bookinfo/platform/kube/cleanup.sh