openstack-helm-infra/kube-dns/templates/deployment-kube-dns.yaml

{{/*
Copyright 2017 The Openstack-Helm 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.
*/}}

{{- if .Values.manifests.deployment_kube_dns }}
{{- $envAll := . }}
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    k8s-app: kube-dns
{{ tuple $envAll "kubernetes" "dns" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
  name: kube-dns
spec:
  replicas: 1
  selector:
    matchLabels:
      k8s-app: kube-dns
{{ tuple $envAll "kubernetes" "dns" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 6 }}
  strategy:
    rollingUpdate:
      maxSurge: 10%
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      labels:
        k8s-app: kube-dns
{{ tuple $envAll "kubernetes" "dns" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: beta.kubernetes.io/arch
                    operator: In
                    values:
                      - amd64
      containers:
        - name: kubedns
{{ tuple $envAll "kube_dns" | include "helm-toolkit.snippets.image" | indent 10 }}
          args:
            - --domain={{ .Values.networking.dnsDomain }}.
            - --dns-port=10053
            - --config-dir=/kube-dns-config
            - --v=2
          env:
            - name: PROMETHEUS_PORT
              value: "10055"
          livenessProbe:
            failureThreshold: 5
            httpGet:
              path: /healthcheck/kubedns
              port: 10054
              scheme: HTTP
            initialDelaySeconds: 60
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 5
          ports:
            - containerPort: 10053
              name: dns-local
              protocol: UDP
            - containerPort: 10053
              name: dns-tcp-local
              protocol: TCP
            - containerPort: 10055
              name: metrics
              protocol: TCP
          readinessProbe:
            failureThreshold: 3
            httpGet:
              path: /readiness
              port: 8081
              scheme: HTTP
            initialDelaySeconds: 3
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 5
          resources:
            limits:
              memory: 170Mi
            requests:
              cpu: 100m
              memory: 70Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /kube-dns-config
              name: kube-dns-config
        - name: dnsmasq
{{ tuple $envAll "kube_dns_nanny" | include "helm-toolkit.snippets.image" | indent 10 }}
          args:
            - -v=2
            - -logtostderr
            - -configDir=/etc/k8s/dns/dnsmasq-nanny
            - -restartDnsmasq=true
            - --
            - -k
            - --cache-size=1000
            - --log-facility=-
            - --server=/{{ .Values.networking.dnsDomain }}/127.0.0.1#10053
            - --server=/in-addr.arpa/127.0.0.1#10053
            - --server=/ip6.arpa/127.0.0.1#10053
          livenessProbe:
            failureThreshold: 5
            httpGet:
              path: /healthcheck/dnsmasq
              port: 10054
              scheme: HTTP
            initialDelaySeconds: 60
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 5
          ports:
            - containerPort: 53
              name: dns
              protocol: UDP
            - containerPort: 53
              name: dns-tcp
              protocol: TCP
          resources:
            requests:
              cpu: 150m
              memory: 20Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /etc/k8s/dns/dnsmasq-nanny
              name: kube-dns-config
        - name: sidecar
{{ tuple $envAll "kube_dns_sidecar" | include "helm-toolkit.snippets.image" | indent 10 }}
          args:
            - --v=2
            - --logtostderr
            - --probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.{{ .Values.networking.dnsDomain }},5,A
            - --probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.{{ .Values.networking.dnsDomain }},5,A
          livenessProbe:
            failureThreshold: 5
            httpGet:
              path: /metrics
              port: 10054
              scheme: HTTP
            initialDelaySeconds: 60
            periodSeconds: 10
            successThreshold: 1
            timeoutSeconds: 5
          ports:
            - containerPort: 10054
              name: metrics
              protocol: TCP
          resources:
            requests:
              cpu: 10m
              memory: 20Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
      dnsPolicy: Default
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      serviceAccount: kube-dns
      serviceAccountName: kube-dns
      terminationGracePeriodSeconds: 30
      tolerations:
      - key: CriticalAddonsOnly
        operator: Exists
      - effect: NoSchedule
        key: node-role.kubernetes.io/master
      volumes:
      - configMap:
          defaultMode: 420
          name: kube-dns
          optional: true
        name: kube-dns-config
{{- end }}