Add base Helm Chart

.gitignore

@@ -1 +1,5 @@
 /target
+
+/**/output/
+/**/charts/
+!/charts/

charts/pod-director/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/pod-director/Chart.yaml

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+apiVersion: v2
+name: pod-director
+description: A simple utility to make pods in specific namespaces run in specific nodes
+type: application
+version: 0.1.0

charts/pod-director/templates/NOTES.txt

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+{{- if .Values.config.groups }}
+Pod Director installed, the following groups were configured:
+{{- toYaml .Values.config.groups | nindent 2 }}
+
+{{ $firstGroup := first (keys .Values.config.groups) -}}
+{{ $testNamespace := "test-namespace" -}}
+You can validate that the groups are working by labelling a test namespace with a group and running a pod in it:
+  kubectl create namespace {{ $testNamespace }}
+  kubectl label namespace {{ $testNamespace }} pod-director/group={{ $firstGroup }}
+  kubectl -n {{ $testNamespace }} run --rm -ti --image=busybox -- /bin/sh
+{{- else }}
+Pod Director was installed, but no groups were configured! It will remain idle until you configure a group and label
+a namespace!
+{{- end }}

charts/pod-director/templates/_helpers.tpl

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+{{- define "pod-director.name" -}}
+  {{- .Values.nameOverride | default .Chart.Name  | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{- define "pod-director.fullname" -}}
+  {{- if .Values.fullnameOverride }}
+    {{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+  {{- else }}
+    {{- $name := .Values.nameOverride | default .Chart.Name  }}
+    {{- if .Release.Name | contains $name  }}
+      {{- .Release.Name | trunc 63 | trimSuffix "-" }}
+    {{- else }}
+      {{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+    {{- end }}
+  {{- end }}
+{{- end }}
+
+{{- define "pod-director.chart" -}}
+  {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{- define "pod-director.labels" -}}
+{{- include "pod-director.selectorLabels" . }}
+app.kubernetes.io/version: {{ .Chart.Version | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+helm.sh/chart: {{ include "pod-director.chart" . }}
+{{- with .Values.globalLabels }}
+{{ toYaml . }}
+{{- end }}
+{{- end }}
+
+{{- define "pod-director.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "pod-director.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{- define "pod-director.serviceAccountName" -}}
+  {{- .Values.serviceAccount.name | default (include "pod-director.fullname" .)  }}
+{{- end }}
+
+{{- define "pod-director.imageFullname" -}}
+  {{- $image := .Values.image }}
+  {{- $registry := $image.registry }}
+  {{- $repository := required "An repository is required" $image.repository }}
+  {{- $tag := $image.tag | default .Chart.Version }}
+  {{- if $registry }}
+    {{- $registry = print $registry "/" }}
+  {{- end }}
+  {{- if $tag }}
+    {{- $tag = print ":" $tag }}
+  {{- end }}
+  {{- print $registry $repository $tag }}
+{{- end }}
+
+{{- define "pod-director.configMapName" -}}
+  {{- include "pod-director.fullname" . }}
+{{- end }}
+
+{{- define "pod-director.serviceName" -}}
+  {{- include "pod-director.fullname" . }}
+{{- end }}
+
+{{- define "pod-director.webhookSecretName" -}}
+  {{- include "pod-director.fullname" . }}
+{{- end }}
+
+{{- define "pod-director.clusterRoleName" -}}
+  {{- include "pod-director.fullname" . }}
+{{- end }}

charts/pod-director/templates/clusterrole.yaml

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+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "pod-director.clusterRoleName" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+rules:
+  - apiGroups: [""]
+    resources: ["namespaces"]
+    verbs: ["get", "list", "watch"]

charts/pod-director/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "pod-director.configMapName" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.config.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+data:
+  {{ .Values.config.filename | quote }}: |
+    server:
+      {{- toYaml .Values.config.server | nindent 6 }}
+    groups:
+      {{- toYaml .Values.config.groups | nindent 6 }}

charts/pod-director/templates/deployment.yaml

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+{{- $configMountPath := without (splitList "/" .Values.config.mountPath) "" | join "/" | printf "/%s" -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "pod-director.fullname" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  {{- with .Values.updateStrategy }}
+  strategy:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "pod-director.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "pod-director.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+          {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      imagePullSecrets:
+        {{- toYaml .Values.image.pullSecrets | nindent 8 }}
+      serviceAccountName: {{ include "pod-director.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      initContainers:
+        {{- toYaml .Values.initContainers | nindent 8 }}
+      containers:
+        - name: pod-director
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: {{ include "pod-director.imageFullname" . | quote }}
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: PD_CONFIG_FILE
+              value: {{ print $configMountPath "/" .Values.config.filename | quote }}
+            {{- with .Values.env }}
+              {{- toYaml . | nindent 12 }}
+            {{- end }}
+          envFrom:
+            {{- toYaml .Values.envFrom | nindent 12 }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.config.server.port | default 8443 }}
+              protocol: TCP
+          {{- if .Values.readinessProbe.enabled }}
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.readinessProbe.path }}
+              port: http
+              scheme: {{ .Values.readinessProbe.scheme }}
+            periodSeconds: {{ .Values.readinessProbe.period }}
+            successThreshold: {{ .Values.readinessProbe.successCount }}
+            failureThreshold: {{ .Values.readinessProbe.failureCount }}
+            {{- if .Values.readinessProbe.initialDelaySeconds }}
+            initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
+            {{- end }}
+          {{- end }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          lifecycle:
+            {{- toYaml .Values.lifecycle | nindent 12 }}
+          volumeMounts:
+            - name: pd-config
+              mountPath: {{ $configMountPath }}
+              readOnly: true
+            - name: webhook
+              mountPath: /app/certs
+              readOnly: true
+            {{- with .Values.volumeMounts }}
+              {{- toYaml . | nindent 12 }}
+            {{- end }}
+        {{- with .Values.extraContainers }}
+          {{- toYaml . | nindent 8 }}
+        {{- end }}
+      volumes:
+        - name: pd-config
+          configMap:
+            name: {{ include "pod-director.configMapName" . }}
+        - name: webhook
+          secret:
+            secretName: {{ include "pod-director.webhookSecretName" . }}
+        {{- with .Values.volumes }}
+          {{- toYaml . | nindent 8 }}
+        {{- end }}
+      nodeSelector:
+        {{- toYaml .Values.nodeSelector | nindent 8 }}
+      affinity:
+        {{- toYaml .Values.affinity | nindent 8 }}
+      tolerations:
+        {{- toYaml .Values.tolerations | nindent 8 }}

charts/pod-director/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "pod-director.fullname" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.autoscaling.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "pod-director.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- toYaml .Values.autoscaling.metrics | nindent 4 }}
+  behavior:
+    {{- toYaml .Values.autoscaling.behavior | nindent 4 }}
+{{- end }}

charts/pod-director/templates/ingress.yaml

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+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "pod-director.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.className }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            pathType: {{ .pathType }}
+            backend:
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+          {{- end }}
+    {{- end }}
+{{- end }}

charts/pod-director/templates/pdb.yaml

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+{{- if .Values.pdb.enabled }}
+  {{- if or (and .Values.pdb.minAvailable .Values.pdb.maxUnavailable) (and (not .Values.pdb.minAvailable) (not .Values.pdb.maxUnavailable)) }}
+    {{- fail "Either minAvailable or maxUnavailable for PDB must be defined (but not both)" }}
+  {{- end }}
+
+  {{- if .Values.autoscaling.enabled }}
+    {{- if le (int .Values.autoscaling.minReplicas) 1 }}
+      {{- fail "To use a PDB with autoscaling, minReplicas must be greater than 1" }}
+    {{- end }}
+  {{- else if le (int .Values.replicaCount) 1 }}
+    {{- fail "To use a PDB with a static replica count, replicaCount must be greater than 1" }}
+  {{- end }}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "pod-director.fullname" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.pdb.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- with .Values.pdb.minAvailable }}
+  minAvailable: {{ . }}
+  {{- end }}
+  {{- with .Values.pdb.maxUnavailable }}
+  maxUnavailable: {{ . }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "pod-director.selectorLabels" . | nindent 6 }}
+{{- end }}

charts/pod-director/templates/rolebinding.yaml

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

charts/pod-director/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "pod-director.serviceName" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.service.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "pod-director.selectorLabels" . | nindent 4 }}

charts/pod-director/templates/serviceaccount.yaml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "pod-director.serviceAccountName" . }}
+  labels:
+    {{- include "pod-director.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+automountServiceAccountToken: true