Dev

k8s/helm/Chart.yaml

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+apiVersion: v2
+name: helloenv
+version: 0.1.0
+appVersion: "1.0.0"
+description: Minimal Helm chart for helloenv (.NET 9) app
+type: application

k8s/helm/README.md

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+# Quick start
+
+# Create namespace (if needed)
+kubectl create ns helloenv || true
+
+# Install chart from local folder ./helloenv
+helm install helloenv . -n helloenv \
+  --set image.repository=ghcr.io/nikodevops/helloenv \
+  --set image.tag=dev \
+  --set config.GREETING="Kuber"
+
+# Enable Ingress (example)
+helm upgrade helloenv ./helloenv -n helloenv \
+  --set ingress.enabled=true \
+  --set ingress.hosts[0].host=helloenv.example.com \
+  --set ingress.hosts[0].paths[0].path=/ \
+  --set ingress.hosts[0].paths[0].pathType=Prefix
+
+# For upgrade chart
+helm upgrade helloenv . -n helloenv
+
+# For delete chart
+helm uninstall helloenv -n helloenv

k8s/helm/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+  export RELEASE={{ .Release.Name }}
+  export NAMESPACE={{ .Release.Namespace }}
+
+  kubectl get svc $RELEASE-helloenv -n $NAMESPACE
+
+2. If Ingress is enabled, open the configured host(s).

k8s/helm/templates/_helpers.tpl

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+{{- define "helloenv.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "helloenv.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 -}}
+
+{{- define "helloenv.labels" -}}
+app.kubernetes.io/name: {{ include "helloenv.name" . }}
+helm.sh/chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+{{- end -}}

k8s/helm/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "helloenv.fullname" . }}-config
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+data:
+  {{- range $k, $v := .Values.config }}
+  {{ $k }}: {{ $v | quote }}
+  {{- end }}

k8s/helm/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "helloenv.fullname" . }}
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  revisionHistoryLimit: 2
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "helloenv.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "helloenv.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+    spec:
+      {{- if .Values.image.pullSecrets }}
+      imagePullSecrets:
+        {{- toYaml .Values.image.pullSecrets | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ default (include "helloenv.fullname" .) .Values.serviceAccount.name }}
+      terminationGracePeriodSeconds: 30
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      topologySpreadConstraints:
+        - maxSkew: 1
+          topologyKey: kubernetes.io/hostname
+          whenUnsatisfiable: ScheduleAnyway
+          labelSelector:
+            matchLabels:
+              app.kubernetes.io/name: {{ include "helloenv.name" . }}
+              app.kubernetes.io/instance: {{ .Release.Name }}
+      containers:
+        - name: {{ include "helloenv.name" . }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 8080
+          env:
+            - name: ASPNETCORE_URLS
+              value: "http://+:8080"
+          envFrom:
+            - configMapRef:
+                name: {{ include "helloenv.fullname" . }}-config
+          securityContext:
+            {{- toYaml .Values.containerSecurityContext | nindent 12 }}
+          volumeMounts:
+            {{- toYaml .Values.extraVolumeMounts | nindent 12 }}
+          {{- if .Values.probes.startup.enabled }}
+          startupProbe:
+            httpGet:
+              path: {{ .Values.probes.startup.path }}
+              port: http
+            periodSeconds: {{ .Values.probes.startup.periodSeconds }}
+            failureThreshold: {{ .Values.probes.startup.failureThreshold }}
+          {{- end }}
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.probes.readiness.path }}
+              port: http
+            periodSeconds: {{ .Values.probes.readiness.periodSeconds }}
+            timeoutSeconds: {{ .Values.probes.readiness.timeoutSeconds }}
+            failureThreshold: {{ .Values.probes.readiness.failureThreshold }}
+          livenessProbe:
+            httpGet:
+              path: {{ .Values.probes.liveness.path }}
+              port: http
+            periodSeconds: {{ .Values.probes.liveness.periodSeconds }}
+            timeoutSeconds: {{ .Values.probes.liveness.timeoutSeconds }}
+            failureThreshold: {{ .Values.probes.liveness.failureThreshold }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      volumes:
+        {{- toYaml .Values.extraVolumes | nindent 8 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

k8s/helm/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "helloenv.fullname" . }}
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "helloenv.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+{{- end }}

k8s/helm/templates/ingress.yaml

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

k8s/helm/templates/pdb.yaml

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+{{- if .Values.pdb.enabled }}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "helloenv.fullname" . }}-pdb
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+spec:
+  minAvailable: {{ .Values.pdb.minAvailable }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "helloenv.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

k8s/helm/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "helloenv.fullname" . }}
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  selector:
+    app.kubernetes.io/name: {{ include "helloenv.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP

k8s/helm/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ default (include "helloenv.fullname" .) .Values.serviceAccount.name }}
+  labels:
+    {{- include "helloenv.labels" . | nindent 4 }}
+  annotations:
+    {{- toYaml .Values.serviceAccount.annotations | nindent 4 }}
+automountServiceAccountToken: {{ .Values.serviceAccount.automount | default false }}
+{{- end }}

k8s/helm/values.yaml

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+image:
+  repository: ghcr.io/nikodevops/helloenv
+  tag: "latest"
+  pullPolicy: IfNotPresent
+  pullSecrets: []
+
+replicaCount: 2
+
+serviceAccount:
+  create: true
+  name: ""
+  annotations: {}
+  automount: false
+
+autoscaling:
+  enabled: false
+  minReplicas: 2
+  maxReplicas: 5
+  targetCPUUtilizationPercentage: 70
+
+pdb:
+  enabled: false
+  minAvailable: 1
+
+service:
+  type: ClusterIP
+  port: 80
+
+ingress:
+  enabled: false
+  className: "nginx"
+  annotations: {}
+  # cert-manager.io/cluster-issuer: letsencrypt
+  # external-dns.alpha.kubernetes.io/hostname: helloenv.example.com
+  hosts:
+    - host: helloenv.example.com
+      paths:
+        - path: /
+          pathType: Prefix
+  tls: []
+  # - secretName: helloenv-tls
+  #   hosts:
+  #     - helloenv.example.com
+
+config:
+  GREETING: "World"
+
+resources:
+  requests:
+    cpu: 50m
+    memory: 128Mi
+  limits:
+    cpu: 250m
+    memory: 256Mi
+
+nodeSelector: {}
+
+affinity: {}
+
+tolerations: []
+
+podAnnotations: {}
+
+podSecurityContext:
+  runAsNonRoot: true
+  runAsUser: 10000
+  runAsGroup: 10000
+  fsGroup: 2000
+  seccompProfile:
+    type: RuntimeDefault
+
+containerSecurityContext:
+  allowPrivilegeEscalation: false
+  readOnlyRootFilesystem: true
+  capabilities:
+    drop: ["ALL"]
+
+probes:
+  startup:
+    enabled: true
+    path: "/"
+    periodSeconds: 2
+    failureThreshold: 30
+  readiness:
+    path: "/"
+    periodSeconds: 5
+    timeoutSeconds: 2
+    failureThreshold: 3
+  liveness:
+    path: "/"
+    periodSeconds: 10
+    timeoutSeconds: 2
+    failureThreshold: 3
+
+extraEnv: []
+#  - name: SOME_VAR
+#    value: some-value
+
+extraEnvFrom: []
+#  - secretRef:
+#      name: my-secret
+
+extraVolumes:
+  - name: tmp
+    emptyDir: {}
+
+extraVolumeMounts:
+  - name: tmp
+    mountPath: /tmp