---
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:
  revisionHistoryLimit: 0
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  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"
      nodeSelector:
        kubernetes.io/os: linux
      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:v0.8.1"
        args:
        - --cert-dir=/tmp
        - --secure-port=10250
        - --kubelet-preferred-address-types=%{PREFERRED_ADDRESS_TYPES}%
        - --kubelet-use-node-status-port
        - --metric-resolution=15s
        - --tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305
        resources:
          requests:
            cpu: 100m
            memory: 70Mi
        ports:
        - name: https
          containerPort: 10250
          protocol: TCP
        readinessProbe:
          httpGet:
            path: /readyz
            port: https
            scheme: HTTPS
          initialDelaySeconds: 0
          periodSeconds: 2
          timeoutSeconds: 1
          successThreshold: 1
          failureThreshold: 3
        livenessProbe:
          httpGet:
            path: /livez
            port: https
            scheme: HTTPS
          initialDelaySeconds: 60
          periodSeconds: 10
          timeoutSeconds: 1
          successThreshold: 1
          failureThreshold: 3
        securityContext:
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
          allowPrivilegeEscalation: false
        volumeMounts:
        - name: tmp-dir
          mountPath: /tmp
