Added k8s helm charts

README.md

@@ -45,6 +45,19 @@ To remove them, run:
 ```shell
 kubectl delete -f k8s-specifications/
 ```
+#### Deploying the Voting App Using Helm on Kubernetes
+
+The k8s-helm folder contains all the Helm charts for the Voting App's services.
+
+Run the following command to deploy the Voting App using the Helm charts:
+```shell
+helm install vote-helm k8s-helm/ -n <namespace>
+```
+To remove the deployment, run:
+
+```shell
+helm uninstall vote-helm -n <namespace>
+```
 
 ## Architecture
 

k8s-helm/.helmignore

@@ -0,0 +1,26 @@
+# 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/
+# votingapp-vote.yml
+# votingapp-worker.yml
+# votingapp-result.yml

k8s-helm/Chart.yaml

@@ -0,0 +1,24 @@
+apiVersion: v2
+name: k8s-helm
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"

k8s-helm/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "k8s-helm.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 "k8s-helm.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 "k8s-helm.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "k8s-helm.labels" -}}
+helm.sh/chart: {{ include "k8s-helm.chart" . }}
+{{ include "k8s-helm.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "k8s-helm.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "k8s-helm.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "k8s-helm.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "k8s-helm.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

k8s-helm/templates/db.yml

@@ -0,0 +1,56 @@
+---
+#################################################
+################## Deployments ##################
+#################################################
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: db
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.replicaCount}}
+  selector:
+    matchLabels:
+      app: db
+  template:
+    metadata:
+      labels:
+        app: db
+    spec:
+      containers:
+        - name: db
+          image: "{{ .Values.db.repository }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.localPort.db }}
+              protocol: TCP
+          env:
+            - name: POSTGRES_USER
+              value: {{ .Values.db.postgresUser }}
+            - name: POSTGRES_PASSWORD
+              value: {{ .Values.db.postgresPassword }}
+          readinessProbe:
+            tcpSocket:
+              port: {{ .Values.localPort.db }}
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: db
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: db
+spec:
+  type: ClusterIP
+  ports:
+    - port: {{ .Values.ExportPort.db }}
+      targetPort: {{ .Values.localPort.db }}
+  selector:
+    app: db

k8s-helm/templates/redis.yml

@@ -0,0 +1,53 @@
+---
+#################################################
+################## Deployments ##################
+#################################################
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: redis
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.replicaCount}}
+  selector:
+    matchLabels:
+      app: redis
+  template:
+    metadata:
+      labels:
+        app: redis
+    spec:
+      containers:
+        - name: redis
+          image: "{{ .Values.image.repositoryRedis }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.localPort.redis }}
+              protocol: TCP
+          readinessProbe:
+            tcpSocket:
+              port: {{ .Values.localPort.redis }}
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+
+
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: redis
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: redis
+spec:
+  type: ClusterIP
+  ports:
+    - port: {{ .Values.ExportPort.redis }}
+      targetPort: {{ .Values.localPort.redis }}
+  selector:
+    app: redis

k8s-helm/templates/votingapp-result.yml

@@ -0,0 +1,53 @@
+---
+#################################################
+################## Deployments ##################
+#################################################
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: result
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.replicaCount}}
+  selector:
+    matchLabels:
+      app: result
+  template:
+    metadata:
+      labels:
+        app: result
+    spec:
+      containers:
+        - name: result
+          image: "{{ .Values.image.repositoryResult }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.localPort.result }}
+              protocol: TCP
+          readinessProbe:
+            tcpSocket:
+              port: {{ .Values.localPort.result }}
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+
+
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: result
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: result
+spec:
+  type: ClusterIP
+  ports:
+    - port: {{ .Values.ExportPort.result }}
+      targetPort: {{ .Values.localPort.result }}
+  selector:
+    app: result

k8s-helm/templates/votingapp-vote.yml

@@ -0,0 +1,53 @@
+---
+#################################################
+################## Deployments ##################
+#################################################
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: vote
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.replicaCount}}
+  selector:
+    matchLabels:
+      app: vote
+  template:
+    metadata:
+      labels:
+        app: vote
+    spec:
+      containers:
+        - name: vote
+          image: "{{ .Values.image.repositoryVote }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.localPort.vote }}
+              protocol: TCP
+          readinessProbe:
+            tcpSocket:
+              port: {{ .Values.localPort.vote }}
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+
+
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: vote
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: vote
+spec:
+  type: ClusterIP
+  ports:
+    - port: {{ .Values.ExportPort.vote }}
+      targetPort: {{ .Values.localPort.vote }}
+  selector:
+    app: vote

k8s-helm/templates/votingapp-worker.yml

@@ -0,0 +1,29 @@
+---
+#################################################
+################## Deployments ##################
+#################################################
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: worker
+  namespace: {{ .Release.Namespace }}
+spec:
+  replicas: {{ .Values.replicaCount}}
+  selector:
+    matchLabels:
+      app: worker
+  template:
+    metadata:
+      labels:
+        app: worker
+    spec:
+      containers:
+        - name: worker
+          image: "{{ .Values.image.repositoryWorker }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.localPort.worker }}
+              protocol: TCP
+
+