Made Helm charts for server and client

charts/Chart.yaml

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+apiVersion: v2
+name: ptrun
+description: A Helm chart for PTRun group projet
+
+type: application
+version: 0.1.0
+
+appVersion: "0.1.0"

charts/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 "ptrun.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "ptrun.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "ptrun.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 "ptrun.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 }}

charts/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "ptrun.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "ptrun.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "ptrun.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "ptrun.labels" -}}
+helm.sh/chart: {{ include "ptrun.chart" . }}
+{{ include "ptrun.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "ptrun.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "ptrun.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "ptrun.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "ptrun.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "ptrun.fullname" . }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.server.autoscaling.enabled }}
+  replicas: {{ .Values.server.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "ptrun.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.server.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "ptrun.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.server.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "ptrun.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.server.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.server.securityContext | nindent 12 }}
+          image: "{{ .Values.server.image.repository }}:{{ .Values.server.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.server.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.server.resources | nindent 12 }}
+      {{- with .Values.server.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.server.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.server.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "ptrun.fullname" . }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.client.autoscaling.enabled }}
+  replicas: {{ .Values.client.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "ptrun.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.client.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "ptrun.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.client.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "ptrun.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.client.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.client.securityContext | nindent 12 }}
+          image: "{{ .Values.client.image.repository }}:{{ .Values.cliet.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.client.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.client.resources | nindent 12 }}
+      {{- with .Values.client.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.client.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.client.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "ptrun.fullname" . }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "ptrun.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}

charts/templates/ingress.yaml

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+{{- if .Values.server.ingress.enabled -}}
+{{- $serviceName := (include "ptrun.fullname" .) -}}
+{{- $servicePort := .Values.server.service.port -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $serviceName }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt
+spec:
+  rules:
+    - host: {{ .Values.server.service.ingress.host }}
+      http:
+        paths:
+          - path: /
+            pathType: ImplementationSpecific
+            backend:
+              service:
+                name: {{ $serviceName }}
+                port:
+                  number: {{ $servicePort }}
+  tls:
+    - secretName: ptrun-tls #Vprasaj za secret name
+      hosts:
+      - {{ .Values.service.service.ingress.host }}
+{{- end -}}    
+
+---
+{{- if .Values.client.ingress.enabled -}}
+{{- $serviceName := (include "ptrun.fullname" .) -}}
+{{- $servicePort := .Values.client.service.port -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $serviceName }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt
+spec:
+  rules:
+    - host: {{ .Values.client.service.ingress.host }}
+      http:
+        paths:
+          - path: /
+            pathType: ImplementationSpecific
+            backend:
+              service:
+                name: {{ $serviceName }}
+                port:
+                  number: {{ $servicePort }}
+  tls:
+    - secretName: ptrun-tls #Vprasaj za secret name
+      hosts:
+        - {{ .Values.client.service.ingress.host }}
+{{- end -}}    

charts/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "ptrun.fullname" . }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.server.service.type }}
+  ports:
+    - port: {{ .Values.server.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "ptrun.selectorLabels" . | nindent 4 }}
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "ptrun.fullname" . }}
+  labels:
+    {{- include "ptrun.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.client.service.type }}
+  ports:
+    - port: {{ .Values.client.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "ptrun.selectorLabels" . | nindent 4 }}

charts/templates/serviceaccount.yaml

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

charts/templates/tests/test-connection.yaml

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