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helm/exam/.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/

helm/exam/Chart.yaml

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+apiVersion: v2
+name: exam
+description: A Helm chart for Kubernetes
+type: application
+version: 0.1.0
+appVersion: "1.16.0"

helm/exam/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "exam.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "exam.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "exam.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "exam.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

helm/exam/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "exam.fullname" . }}
+  labels:
+    {{- include "exam.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "exam.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "exam.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "exam.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

helm/exam/templates/secrets.yaml

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+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "exam.fullname" . }}-postgres-secrets
+  labels:
+  {{- include "exam.labels" . | nindent 4 }}
+data:
+  password: {{ required "secrets.password is required" .Values.secrets.password
+    | b64enc | quote }}
+  username: {{ required "secrets.username is required" .Values.secrets.username
+    | b64enc | quote }}
+type: Opaque

helm/exam/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "exam.serviceAccountName" . }}
+  labels:
+    {{- include "exam.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

helm/exam/templates/tests/test-connection.yaml

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+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "exam.fullname" . }}-test-connection"
+  labels:
+    {{- include "exam.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "exam.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never

helm/exam/templates/volume.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: {{ include "exam.fullname" . }}-postgres-pv
+  labels:
+    type: local
+  {{- include "exam.labels" . | nindent 4 }}
+spec:
+  accessModes:
+  - ReadWriteOnce
+  capacity:
+    storage: 1Gi
+  hostPath:
+    path: /tmp/minikube/postgres
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: manual
+  volumeMode: Filesystem
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "exam.fullname" . }}-postgres-pv-claim
+  labels:
+    app: db
+  {{- include "exam.labels" . | nindent 4 }}
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: {{ .Values.pvc.request | quote }}
+  storageClassName: {{ .Values.pvc.class | quote }}

helm/exam/values.yaml

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+replicaCount: 1
+
+image:
+  repository: nginx
+  pullPolicy: IfNotPresent
+  tag: ""
+
+imagePullSecrets: []
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: false
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext: {}
+
+securityContext: {}
+
+service:
+  type: ClusterIP
+  port: 80
+
+ingress:
+  ssl: false
+  className: ""
+  annotations:
+    nginx.ingress.kubernetes.io/rewrite-target: /$2
+    nginx.ingress.kubernetes.io/ssl-redirect: "false"
+    nginx.ingress.kubernetes.io/use-regex: "true"
+  hosts:
+    - host: kube-exam.local
+      paths:
+        - path: /()(.*)
+          pathType: ImplementationSpecific
+          name: "client"
+          port: 8080
+        - path: /api(/|$)(.*)
+          pathType: ImplementationSpecific
+          name: "api"
+          port: 5000
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+resources: {}
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+services:
+  - api:
+    name: "api"
+    tier: "backend"
+    port: 5000
+    target: 0
+  - postgres:
+    name: "postgres"
+    tier: "backend"
+    port: 5432
+    target: 0
+  - client:
+    name: "client"
+    tier: "frontend"
+    port: 8080
+    target: 80
+
+secrets:
+  password: "username"
+  username: "password1234"
+pvc:
+  storageClass: manual
+  storageRequest: 1Gi