# sourced from https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.7.1/components.yaml
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
    rbac.authorization.k8s.io/aggregate-to-admin: "true"
    rbac.authorization.k8s.io/aggregate-to-edit: "true"
    rbac.authorization.k8s.io/aggregate-to-view: "true"
  name: system:aggregated-metrics-reader
rules:
- apiGroups:
  - metrics.k8s.io
  resources:
  - pods
  - nodes
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
rules:
- apiGroups:
  - ""
  resources:
  - nodes/metrics
  verbs:
  - get
- apiGroups:
  - ""
  resources:
  - pods
  - nodes
  verbs:
  - get
  - list
  - watch
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server-auth-reader
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: extension-apiserver-authentication-reader
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server:system:auth-delegator
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:auth-delegator
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  labels:
    k8s-app: metrics-server
  name: system:metrics-server
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:metrics-server
subjects:
- kind: ServiceAccount
  name: metrics-server
  namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  ports:
  - name: https
    port: 443
    protocol: TCP
    targetPort: https
  selector:
    k8s-app: metrics-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    k8s-app: metrics-server
  name: metrics-server
  namespace: kube-system
spec:
  replicas: 2
  selector:
    matchLabels:
      k8s-app: metrics-server
  template:
    metadata:
      labels:
        k8s-app: metrics-server
    spec:
      containers:
      - args:
        - --secure-port=4443
        - --kubelet-use-node-status-port
        - --metric-resolution=15s
        - --kubelet-preferred-address-types={{ if or IsIPv6Only (not (eq GetCloudProvider "aws"))}}InternalIP{{ else }}Hostname{{ end }}
{{ if not (WithDefaultBool .MetricsServer.Insecure true) }}
        - --tls-cert-file=/srv/tls.crt
        - --tls-private-key-file=/srv/tls.key
{{ else }}
        - --cert-dir=/tmp
{{ end }}
{{ if WithDefaultBool .MetricsServer.Insecure true }}
        - --kubelet-insecure-tls
{{ end }}
        image: {{ or .MetricsServer.Image "registry.k8s.io/metrics-server/metrics-server:v0.7.2" }}
        imagePullPolicy: IfNotPresent
        livenessProbe:
          failureThreshold: 3
          httpGet:
            path: /livez
            port: https
            scheme: HTTPS
          periodSeconds: 10
        name: metrics-server
        ports:
        - containerPort: 4443
          name: https
          protocol: TCP
        readinessProbe:
          failureThreshold: 3
          httpGet:
            path: /readyz
            port: https
            scheme: HTTPS
          initialDelaySeconds: 20
          periodSeconds: 10
        resources:
          requests:
            cpu: 100m
            memory: 200Mi
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
            - ALL
          readOnlyRootFilesystem: true
          runAsNonRoot: true
          runAsUser: 1000
          seccompProfile:
            type: RuntimeDefault
        volumeMounts:
{{ if not (WithDefaultBool .MetricsServer.Insecure true) }}
        - name: certs
          mountPath: /srv
{{ end }}
        - mountPath: /tmp
          name: tmp-dir
      nodeSelector:
        kubernetes.io/os: linux
      priorityClassName: system-cluster-critical
      serviceAccountName: metrics-server
      topologySpreadConstraints:
      - maxSkew: 1
        topologyKey: "topology.kubernetes.io/zone"
        whenUnsatisfiable: ScheduleAnyway
        labelSelector:
          matchLabels:
            k8s-app: metrics-server
      - maxSkew: 1
        topologyKey: "kubernetes.io/hostname"
        whenUnsatisfiable: DoNotSchedule
        labelSelector:
          matchLabels:
            k8s-app: metrics-server
      volumes:
{{ if not (WithDefaultBool .MetricsServer.Insecure true) }}
      - name: certs
        secret:
          secretName: metrics-server-tls
{{ end }}
      - emptyDir: {}
        name: tmp-dir
---
apiVersion: apiregistration.k8s.io/v1
kind: APIService
metadata:
{{ if not (WithDefaultBool .MetricsServer.Insecure true) }}
  annotations:
    cert-manager.io/inject-ca-from: kube-system/metrics-server
{{ end }}
  labels:
    k8s-app: metrics-server
  name: v1beta1.metrics.k8s.io
spec:
  group: metrics.k8s.io
  groupPriorityMinimum: 100
{{ if WithDefaultBool .MetricsServer.Insecure true }}
  insecureSkipTLSVerify: true
{{ end }}
  service:
    name: metrics-server
    namespace: kube-system
  version: v1beta1
  versionPriority: 100
---
apiVersion: policy/v1
kind: PodDisruptionBudget
metadata:
  name: metrics-server
  namespace: kube-system
  labels:
    k8s-app: metrics-server
spec:
  minAvailable: 1
  selector:
    matchLabels:
      k8s-app: metrics-server
{{ if not (WithDefaultBool .MetricsServer.Insecure true) }}
---
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: metrics-server
  namespace: kube-system
spec:
  secretName: metrics-server-tls
  duration: 2160h
  renewBefore: 360h
  usages:
    - server auth
  dnsNames:
  - metrics-server.kube-system.svc
  issuerRef:
    name: metrics-server.addons.k8s.io
    kind: Issuer
{{ end }}