Error: rendered manifests contain a resource that already exists. Unable to continue with install

We get this  error while installing ISTIO and Installation did not continue.

Error:

[root@k8smaster istio-1.4.3]# helm install istio-init install/kubernetes/helm/istio-init --namespace istio-system
Error: rendered manifests contain a resource that already exists. Unable to continue with install: existing resource conflict: namespace: , name: istio-init-istio-system, existing_kind: rbac.authorization.k8s.io/v1, Kind=ClusterRole, new_kind: rbac.authorization.k8s.io/v1, Kind=ClusterRole
[root@k8smaster istio-1.4.3]#

Solution:

We need to find out the resource that is conflicting. Then delete that resource. In our case it was a ClusterRole resource. So we checked that and deleted that to continue our installation.

[root@k8smaster istio-1.4.3]# kubectl get ClusterRole | grep -i istio-init-istio-system
istio-init-istio-system                                                43m

[root@k8smaster istio-1.4.3]# kubectl delete ClusterRole istio-init-istio-system
clusterrole.rbac.authorization.k8s.io "istio-init-istio-system" deleted
[root@k8smaster istio-1.4.3]#