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Merge pull request #168 from alex-berger/feature/eks-compatibility
Allow overriding selectors and names
2 parents 6c10624 + 0185693 commit 42bd58d

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‎charts/coredns/Chart.yaml

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@@ -1,6 +1,6 @@
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apiVersion: v2
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name: coredns
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version: 1.30.0
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version: 1.31.0
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appVersion: 1.11.1
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home: https://coredns.io
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icon: https://coredns.io/images/CoreDNS_Colour_Horizontal.png
@@ -20,4 +20,6 @@ type: application
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annotations:
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artifacthub.io/changes: |
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- kind: added
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description: Ability to skip configmap management
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description: Allow overriding the selectors for Deployment, Services, PodDisruptionBudget and ServiceMonitor
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- kind: added
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description: Setting `clusterRole.nameOverride` to allow overriding the ClusterRole name.

‎charts/coredns/README.md

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@@ -60,17 +60,20 @@ The command removes all the Kubernetes components associated with the chart and
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| `serviceType` | Kubernetes Service type | `ClusterIP` |
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| `prometheus.service.enabled` | Set this to `true` to create Service for Prometheus metrics | `false` |
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| `prometheus.service.annotations` | Annotations to add to the metrics Service | `{prometheus.io/scrape: "true", prometheus.io/port: "9153"}` |
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| `prometheus.service.selector` | Pod selector | `{}` |
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| `prometheus.monitor.enabled` | Set this to `true` to create ServiceMonitor for Prometheus operator | `false` |
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| `prometheus.monitor.additionalLabels` | Additional labels that can be used so ServiceMonitor will be discovered by Prometheus | {} |
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| `prometheus.monitor.namespace` | Selector to select which namespaces the Endpoints objects are discovered from. | `""` |
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| `prometheus.monitor.interval` | Scrape interval for polling the metrics endpoint. (E.g. "30s") | `""` |
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| `prometheus.monitor.selector` | Service selector | `{}` |
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| `service.clusterIP` | IP address to assign to service | `""` |
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| `service.clusterIPs` | IP addresses to assign to service | `[]` |
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| `service.loadBalancerIP` | IP address to assign to load balancer (if supported) | `""` |
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| `service.externalIPs` | External IP addresses | [] |
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| `service.externalTrafficPolicy` | Enable client source IP preservation | [] |
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| `service.ipFamilyPolicy` | Service dual-stack policy | `""` |
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| `service.annotations` | Annotations to add to service | {} |
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| `service.selector` | Pod selector | `{}` |
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| `serviceAccount.create` | If true, create & use serviceAccount | false |
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| `serviceAccount.name` | If not set & create is true, use template fullname | |
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| `rbac.create` | If true, create & use RBAC resources | true |
@@ -141,6 +144,8 @@ The command removes all the Kubernetes components associated with the chart and
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| `deployment.enabled` | Optionally disable the main deployment and its respective resources. | `true` |
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| `deployment.name` | Name of the deployment if `deployment.enabled` is true. Otherwise the name of an existing deployment for the autoscaler or HPA to target. | `""` |
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| `deployment.annotations` | Annotations to add to the main deployment | `{}` |
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| `deployment.selector` | Pod selector | `{}` |
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| `clusterRole.nameOverride` | ClusterRole name override | |
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See `values.yaml` for configuration notes. Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
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‎charts/coredns/templates/_helpers.tpl

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@@ -224,3 +224,14 @@ Create the name of the service account to use
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{{ default "default" .Values.serviceAccount.name }}
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{{- end -}}
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{{- end -}}
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{{/*
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Create the name of the service account to use
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*/}}
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{{- define "coredns.clusterRoleName" -}}
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{{- if and .Values.clusterRole .Values.clusterRole.nameOverride -}}
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{{ .Values.clusterRole.nameOverride }}
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{{- else -}}
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{{ template "coredns.fullname" . }}
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{{- end -}}
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{{- end -}}

‎charts/coredns/templates/clusterrole.yaml

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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: {{ template "coredns.fullname" . }}
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name: {{ template "coredns.clusterRoleName" . }}
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labels: {{- include "coredns.labels" . | nindent 4 }}
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rules:
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- apiGroups:

‎charts/coredns/templates/clusterrolebinding.yaml

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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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name: {{ template "coredns.fullname" . }}
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name: {{ template "coredns.clusterRoleName" . }}
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labels: {{- include "coredns.labels" . | nindent 4 }}
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: {{ template "coredns.fullname" . }}
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name: {{ template "coredns.clusterRoleName" . }}
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subjects:
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- kind: ServiceAccount
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name: {{ template "coredns.serviceAccountName" . }}

‎charts/coredns/templates/deployment.yaml

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maxUnavailable: {{ .Values.rollingUpdate.maxUnavailable }}
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maxSurge: {{ .Values.rollingUpdate.maxSurge }}
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selector:
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{{- if .Values.deployment.selector }}
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{{- toYaml .Values.deployment.selector | nindent 4 }}
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{{- else }}
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matchLabels:
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app.kubernetes.io/instance: {{ .Release.Name | quote }}
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{{- if .Values.isClusterService }}
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k8s-app: {{ template "coredns.k8sapplabel" . }}
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{{- end }}
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app.kubernetes.io/name: {{ template "coredns.name" . }}
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{{- end }}
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template:
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metadata:
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labels:

‎charts/coredns/templates/poddisruptionbudget.yaml

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{{- toYaml . | nindent 4 }}
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{{- end }}
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spec:
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{{- if not .Values.podDisruptionBudget.selector }}
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selector:
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matchLabels:
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app.kubernetes.io/instance: {{ .Release.Name | quote }}
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{{- if .Values.isClusterService }}
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k8s-app: {{ template "coredns.k8sapplabel" . }}
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{{- end }}
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app.kubernetes.io/name: {{ template "coredns.name" . }}
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{{- end }}
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{{ toYaml .Values.podDisruptionBudget | indent 2 }}
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{{- end }}

‎charts/coredns/templates/service-metrics.yaml

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{{- end }}
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spec:
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selector:
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{{- if .Values.prometheus.service.selector }}
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{{- toYaml .Values.prometheus.service.selector | nindent 4 }}
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{{- else }}
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app.kubernetes.io/instance: {{ .Release.Name | quote }}
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{{- if .Values.isClusterService }}
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k8s-app: {{ template "coredns.k8sapplabel" . }}
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{{- end }}
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app.kubernetes.io/name: {{ template "coredns.name" . }}
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{{- end }}
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ports:
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- name: metrics
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port: 9153

‎charts/coredns/templates/service.yaml

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{{- end }}
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spec:
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selector:
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{{- if .Values.service.selector }}
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{{- toYaml .Values.service.selector | nindent 4 }}
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{{- else }}
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app.kubernetes.io/instance: {{ .Release.Name | quote }}
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{{- if .Values.isClusterService }}
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k8s-app: {{ template "coredns.k8sapplabel" . }}
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{{- end }}
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app.kubernetes.io/name: {{ template "coredns.name" . }}
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{{- end }}
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{{- if .Values.service.clusterIP }}
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clusterIP: {{ .Values.service.clusterIP }}
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{{- end }}

‎charts/coredns/templates/servicemonitor.yaml

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- {{ .Release.Namespace }}
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{{- end }}
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selector:
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{{- if .Values.prometheus.monitor.selector }}
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{{- toYaml .Values.prometheus.monitor.selector | nindent 4 }}
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{{- else }}
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matchLabels:
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app.kubernetes.io/instance: {{ .Release.Name | quote }}
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{{- if .Values.isClusterService }}
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k8s-app: {{ template "coredns.k8sapplabel" . }}
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{{- end }}
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app.kubernetes.io/name: {{ template "coredns.name" . }}
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app.kubernetes.io/component: metrics
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{{- end }}
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endpoints:
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- port: metrics
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{{- if .Values.prometheus.monitor.interval }}

‎charts/coredns/values.yaml

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annotations:
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prometheus.io/scrape: "true"
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prometheus.io/port: "9153"
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selector: {}
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monitor:
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enabled: false
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additionalLabels: {}
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namespace: ""
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interval: ""
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selector: {}
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service:
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# clusterIP: ""
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# If not set, a name is generated using the fullname template
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name: ""
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annotations: {}
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# Pod selector
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selector: {}
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serviceAccount:
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create: false
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name: ""
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## Annotations for the coredns deployment
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annotations: {}
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## Pod selector
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selector: {}

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