---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: metrics-server
  namespace: kube-system
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: metrics-server
  namespace: kube-system
  labels:
    k8s-app: metrics-server
spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  template:
    metadata:
      name: metrics-server
      labels:
        k8s-app: metrics-server
    spec:
      priorityClassName: "system-node-critical"
      serviceAccountName: metrics-server
      tolerations:
        - key: "CriticalAddonsOnly"
          operator: "Exists"
        - key: "node-role.kubernetes.io/control-plane"
          operator: "Exists"
          effect: "NoSchedule"
        - key: "node-role.kubernetes.io/master"
          operator: "Exists"
          effect: "NoSchedule"
      volumes:
      # mount in tmp so we can safely use from-scratch images and/or read-only containers
      - name: tmp-dir
        emptyDir: {}
      containers:
      - name: metrics-server
        image: %{SYSTEM_DEFAULT_REGISTRY}%rancher/mirrored-metrics-server:v0.3.6
        volumeMounts:
        - name: tmp-dir
          mountPath: /tmp