WIP: Make CoreDNS manifests v1.8 #8
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| apiVersion: v1 | ||
| kind: ServiceAccount | ||
| metadata: | ||
| name: coredns | ||
| namespace: kube-system | ||
| --- | ||
| apiVersion: rbac.authorization.k8s.io/v1 | ||
| kind: ClusterRole | ||
| metadata: | ||
| labels: | ||
| kubernetes.io/bootstrapping: rbac-defaults | ||
| name: system:coredns | ||
| rules: | ||
| - apiGroups: | ||
| - "" | ||
| resources: | ||
| - endpoints | ||
| - services | ||
| - pods | ||
| - namespaces | ||
| verbs: | ||
| - list | ||
| - watch | ||
| - apiGroups: | ||
| - "" | ||
| resources: | ||
| - nodes | ||
| verbs: | ||
| - get | ||
| - apiGroups: | ||
| - discovery.k8s.io | ||
| resources: | ||
| - endpointslices | ||
| verbs: | ||
| - list | ||
| - watch | ||
| --- | ||
| apiVersion: rbac.authorization.k8s.io/v1 | ||
| kind: ClusterRoleBinding | ||
| metadata: | ||
| annotations: | ||
| rbac.authorization.kubernetes.io/autoupdate: "true" | ||
| labels: | ||
| kubernetes.io/bootstrapping: rbac-defaults | ||
| name: system:coredns | ||
| roleRef: | ||
| apiGroup: rbac.authorization.k8s.io | ||
| kind: ClusterRole | ||
| name: system:coredns | ||
| subjects: | ||
| - kind: ServiceAccount | ||
| name: coredns | ||
| namespace: kube-system | ||
| --- | ||
| apiVersion: v1 | ||
| kind: ConfigMap | ||
| metadata: | ||
| name: coredns | ||
| namespace: kube-system | ||
| data: | ||
| Corefile: | | ||
| .:53 { | ||
| errors | ||
| health | ||
| ready | ||
| kubernetes cluster.local in-addr.arpa ip6.arpa { | ||
| pods insecure | ||
| fallthrough in-addr.arpa ip6.arpa | ||
| } | ||
| prometheus :9153 | ||
| cache 30 | ||
| loop | ||
| reload | ||
| loadbalance | ||
| } | ||
| --- | ||
| apiVersion: apps/v1 | ||
| kind: Deployment | ||
| metadata: | ||
| name: coredns | ||
| namespace: kube-system | ||
| labels: | ||
| k8s-app: kube-dns | ||
| kubernetes.io/name: "CoreDNS" | ||
| spec: | ||
| replicas: {{ .Values.coredns.replicaCount }} | ||
| strategy: | ||
| type: RollingUpdate | ||
| rollingUpdate: | ||
| maxUnavailable: 1 | ||
| selector: | ||
| matchLabels: | ||
| k8s-app: kube-dns | ||
| template: | ||
| metadata: | ||
| labels: | ||
| k8s-app: kube-dns | ||
| spec: | ||
| priorityClassName: system-cluster-critical | ||
| serviceAccountName: coredns | ||
| tolerations: | ||
| - key: "CriticalAddonsOnly" | ||
| operator: "Exists" | ||
| nodeSelector: | ||
| beta.kubernetes.io/os: linux | ||
| {{- with .Values.coredns.image.pullSecrets }} | ||
| imagePullSecrets: | ||
| {{- toYaml . | nindent 10 }} | ||
| {{- end }} | ||
| containers: | ||
| - name: coredns | ||
| {{- with .Values.coredns.image }} | ||
| image: "{{ .repository }}{{ if .digest }}@{{ .digest }}{{ else }}:{{ .tag }}{{ end }}" | ||
| imagePullPolicy: {{ .pullPolicy }} | ||
| {{- end }} | ||
| resources: | ||
| {{- toYaml .Values.coredns.resources | nindent 10 }} | ||
| args: [ "-conf", "/etc/coredns/Corefile" ] | ||
| volumeMounts: | ||
| - name: config-volume | ||
| mountPath: /etc/coredns | ||
| readOnly: true | ||
| ports: | ||
| - containerPort: 53 | ||
| name: dns | ||
| protocol: UDP | ||
| - containerPort: 53 | ||
| name: dns-tcp | ||
| protocol: TCP | ||
| - containerPort: 9153 | ||
| name: metrics | ||
| protocol: TCP | ||
| securityContext: | ||
| allowPrivilegeEscalation: false | ||
| capabilities: | ||
| add: | ||
| - NET_BIND_SERVICE | ||
| drop: | ||
| - all | ||
| readOnlyRootFilesystem: true | ||
| livenessProbe: | ||
| httpGet: | ||
| path: /health | ||
| port: 8080 | ||
| scheme: HTTP | ||
| initialDelaySeconds: 60 | ||
| timeoutSeconds: 5 | ||
| successThreshold: 1 | ||
| failureThreshold: 5 | ||
| readinessProbe: | ||
| httpGet: | ||
| path: /ready | ||
| port: 8181 | ||
| scheme: HTTP | ||
| dnsPolicy: Default | ||
| volumes: | ||
| - name: config-volume | ||
| configMap: | ||
| name: coredns | ||
| items: | ||
| - key: Corefile | ||
| path: Corefile | ||
| --- | ||
| apiVersion: v1 | ||
| kind: Service | ||
| metadata: | ||
| name: kube-dns | ||
| namespace: kube-system | ||
| annotations: | ||
| prometheus.io/port: "9153" | ||
| prometheus.io/scrape: "true" | ||
| labels: | ||
| k8s-app: kube-dns | ||
| kubernetes.io/cluster-service: "true" | ||
| kubernetes.io/name: "CoreDNS" | ||
| spec: | ||
| selector: | ||
| k8s-app: kube-dns | ||
| clusterIP: {{ template "getCoreDNS" . }} | ||
| ports: | ||
| - name: dns | ||
| port: 53 | ||
| protocol: UDP | ||
| - name: dns-tcp | ||
| port: 53 | ||
| protocol: TCP | ||
| - name: metrics | ||
| port: 9153 | ||
| protocol: TCP | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| {{- if .Values.coredns.enabled }} | ||
| {{- $fullName := include "kubernetes.fullname" . -}} | ||
| --- | ||
| apiVersion: v1 | ||
| kind: ConfigMap | ||
| metadata: | ||
| name: {{ $fullName }}-coredns-manifests | ||
| data: | ||
| {{- if .Values.coredns.enabled }} | ||
| coredns.yaml: | | ||
| {{- tpl (.Files.Get "manifests/coredns-1.8.yaml") . | nindent 4 }} | ||
|
There was a problem hiding this comment. Is there any specific reason for specifying version in filename? There was a problem hiding this comment. It depends on whether you'd like to support several CoreDNS versions simultaneously. Because CoreDNS version does not have strict mapping on Kubernetes version in fact. There was a problem hiding this comment.
How are two coredns versions can act together in single cluster?
That's true, but it has some defaults in kubeadm: |
||
| {{- end }} | ||
| {{- end }} | ||
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