I'm having trouble in installing Helm to one of my GKE cluster through gcloud shell.

When I run: helm install --name mongo-rs-mongodb-replicaset -f 3-values.yaml stable/mongodb-replicaset --debug This is what I get:

[debug] Created tunnel using local port: '39387'

[debug] SERVER: "127.0.0.1:39387"

[debug] Original chart version: ""
[debug] Fetched stable/mongodb-replicaset to /home/idan/.helm/cache/archive/mongodb-replicaset-3.9.6.tgz

[debug] CHART PATH: /home/idan/.helm/cache/archive/mongodb-replicaset-3.9.6.tgz

Error: the server has asked for the client to provide credentials

My service account is set properly:

kubectl describe serviceaccount tiller --namespace kube-system

Name:                tiller
Namespace:           kube-system
Labels:              <none>
Annotations:         <none>
Image pull secrets:  <none>
Mountable secrets:   tiller-token-vbrrn
Tokens:              tiller-token-vbrrn
Events:              <none>


kubectl describe clusterrolebinding tiller

Name:         tiller
Labels:       <none>
Annotations:  <none>
Role:
  Kind:  ClusterRole
  Name:  cluster-admin
Subjects:
  Kind            Name    Namespace
  ----            ----    ---------
  ServiceAccount  tiller  kube-system

I'm owner of my project's IAM, and I'm not sure which credentials should I provide - I have never seen it in the past. Tried to initialize it with helm --upgrade too.