manifests.go

/*
Copyright 2017 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package addons

const (
	KubeProxyConfigMap = `
kind: ConfigMap
apiVersion: v1
metadata:
  name: kube-proxy
  namespace: kube-system
  labels:
    app: kube-proxy
data:
  kubeconfig.conf: |
    apiVersion: v1
    kind: Config
    clusters:
    - cluster:
        certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
        server: {{ .MasterEndpoint }}
      name: default
    contexts:
    - context:
        cluster: default
        namespace: default
        user: default
      name: default
    current-context: default
    users:
    - name: default
      user:
        tokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
`

	KubeProxyDaemonSet = `
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  labels:
    k8s-app: kube-proxy
  name: kube-proxy
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: kube-proxy
  template:
    metadata:
      labels:
        k8s-app: kube-proxy
      annotations:
        # TODO: Move this to the beta tolerations field below as soon as the Tolerations field exists in PodSpec
        scheduler.alpha.kubernetes.io/tolerations: '[{"key":"dedicated","value":"master","effect":"NoSchedule"}]'
    spec:
      containers:
      - name: kube-proxy
        image: {{ .Image }}
        imagePullPolicy: IfNotPresent
        command:
        - /usr/local/bin/kube-proxy
        - --kubeconfig=/var/lib/kube-proxy/kubeconfig.conf
        {{ .ClusterCIDR }}
        securityContext:
          privileged: true
        volumeMounts:
        - mountPath: /var/lib/kube-proxy
          name: kube-proxy
      hostNetwork: true
      serviceAccountName: kube-proxy
      # Tolerate running on the master
      # tolerations:
      # - key: dedicated
      #   value: master
      #   effect: NoSchedule
      volumes:
      - name: kube-proxy
        configMap:
          name: kube-proxy
`

	KubeDNSVersion = "1.12.1"

	KubeDNSDeployment = `

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kube-dns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
spec:
  # replicas: not specified here:
  # 1. In order to make Addon Manager do not reconcile this replicas parameter.
  # 2. Default is 1.
  # 3. Will be tuned in real time if DNS horizontal auto-scaling is turned on.
  strategy:
    rollingUpdate:
      maxSurge: 10%
      maxUnavailable: 0
  selector:
    matchLabels:
      k8s-app: kube-dns
  template:
    metadata:
      labels:
        k8s-app: kube-dns
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
        # TODO: Move this to the beta tolerations field below as soon as the Tolerations field exists in PodSpec
        scheduler.alpha.kubernetes.io/tolerations: '[{"key":"CriticalAddonsOnly", "operator":"Exists"}, {"key":"dedicated","value":"master","effect":"NoSchedule"}]'
    spec:
      volumes:
      - name: kube-dns-config
        configMap:
          name: kube-dns
          optional: true
      containers:
      - name: kubedns
        image: {{ .ImageRepository }}/k8s-dns-kube-dns-{{ .Arch }}:{{ .Version }}
        imagePullPolicy: IfNotPresent
        resources:
          # TODO: Set memory limits when we've profiled the container for large
          # clusters, then set request = limit to keep this container in
          # guaranteed class. Currently, this container falls into the
          # "burstable" category so the kubelet doesn't backoff from restarting it.
          limits:
            memory: 170Mi
          requests:
            cpu: 100m
            memory: 70Mi
        livenessProbe:
          httpGet:
            path: /healthcheck/kubedns
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        readinessProbe:
          httpGet:
            path: /readiness
            port: 8081
            scheme: HTTP
          # we poll on pod startup for the Kubernetes master service and
          # only setup the /readiness HTTP server once that's available.
          initialDelaySeconds: 3
          timeoutSeconds: 5
        args:
        - --domain={{ .DNSDomain }}.
        - --dns-port=10053
        - --config-dir=/kube-dns-config
        - --v=2
        # Do we need to set __PILLAR__FEDERATIONS__DOMAIN__MAP__ here?
        env:
        - name: PROMETHEUS_PORT
          value: "10055"
        ports:
        - containerPort: 10053
          name: dns-local
          protocol: UDP
        - containerPort: 10053
          name: dns-tcp-local
          protocol: TCP
        - containerPort: 10055
          name: metrics
          protocol: TCP
        volumeMounts:
        - name: kube-dns-config
          mountPath: /kube-dns-config
      - name: dnsmasq
        image: {{ .ImageRepository }}/k8s-dns-dnsmasq-{{ .Arch }}:{{ .Version }}
        imagePullPolicy: IfNotPresent
        livenessProbe:
          httpGet:
            path: /healthcheck/dnsmasq
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        args:
        - --cache-size=1000
        - --no-resolv
        - --server=/{{ .DNSDomain }}/127.0.0.1#10053
        - --server=/in-addr.arpa/127.0.0.1#10053
        - --server=/ip6.arpa/127.0.0.1#10053
        - --log-facility=-
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        # see: https://github.com/kubernetes/kubernetes/issues/29055 for details
        resources:
          requests:
            cpu: 150m
            memory: 10Mi
      - name: sidecar
        image: {{ .ImageRepository }}/k8s-dns-sidecar-{{ .Arch }}:{{ .Version }}
        imagePullPolicy: IfNotPresent
        livenessProbe:
          httpGet:
            path: /metrics
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        args:
        - --v=2
        - --logtostderr
        - --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.{{ .DNSDomain }},5,A
        - --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.{{ .DNSDomain }},5,A
        ports:
        - containerPort: 10054
          name: metrics
          protocol: TCP
        resources:
          requests:
            memory: 20Mi
            cpu: 10m
      dnsPolicy: Default  # Don't use cluster DNS.
      serviceAccountName: kube-dns
      # tolerations:
      # - key: dedicated
      #   value: master
      #   effect: NoSchedule
      # TODO: Remove this affinity field as soon as we are using manifest lists
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: beta.kubernetes.io/arch
                operator: In
                values:
                - {{ .Arch }}
`

	KubeDNSService = `
apiVersion: v1
kind: Service
metadata:
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: "KubeDNS"
  name: kube-dns
  namespace: kube-system
spec:
  clusterIP: {{ .DNSIP }}
  ports:
  - name: dns
    port: 53
    protocol: UDP
    targetPort: 53
  - name: dns-tcp
    port: 53
    protocol: TCP
    targetPort: 53
  selector:
    k8s-app: kube-dns
`
)