Merge pull request #1 from mrmuli/feature/add-helm-chart

Feature: Add helm chart and deployment configuration.

chart/.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/

chart/Chart.lock

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+dependencies:
+- name: configmap
+  repository: https://ameijer.github.io/k8s-as-helm
+  version: 1.0.3
+digest: sha256:22e5078b73533d695ab6b67d604ccb67c54d0e4a89ac5e4379b528da176fe8c8
+generated: "2022-11-16T16:52:39.291084+01:00"

chart/Chart.yaml

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+apiVersion: v2
+name: demo
+description: A demo server
+
+type: application
+version: 0.1.0
+appVersion: "1.16.0"
+dependencies:
+  - name: configmap
+    version: 1.0.3
+    repository: https://ameijer.github.io/k8s-as-helm
+  # - name: sealed-secrets
+  #   version: 1.1.10
+  #   repository: https://charts.bitnami.com/bitnami

chart/templates/_helpers.tpl

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

chart/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "demo.fullname" . }}
+  labels:
+    {{- include "demo.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "demo.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "demo.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      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: 80
+              protocol: TCP
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          envFrom:
+          - configMapRef:
+              name: {{ .Values.config.ConfigMap}}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

chart/templates/service.yaml

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

chart/values-development.yaml

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+replicaCount: 1
+
+
+
+image:
+  repository: josephmuli/demo-server
+  pullPolicy: IfNotPresent
+  tag: "1.0.1-dev"
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: {}
+
+podSecurityContext: {}
+
+securityContext: {}
+
+config:
+  ConfigMap: demo-server
+
+
+service:
+  type: ClusterIP
+  port: 3030
+
+# Create a configmap with environment-specific config.
+configmap:
+  configmapData:
+    SERVER_USERNAME: "development"
+    TEAM: "blue"
+
+resources: {}
+
+nodeSelector: {}
+
+# Uncomment this to deploy this service to nodes or node pools with the defined label.
+# nodeSelector:
+#   environment: development
+
+tolerations: []
+
+affinity: {}

chart/values-production.yaml

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+replicaCount: 1
+
+image:
+  repository: josephmuli/demo-server
+  pullPolicy: IfNotPresent
+  tag: "2.0.1"
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+
+podAnnotations: {}
+
+podSecurityContext: {}
+
+securityContext: {}
+
+config:
+  ConfigMap: demo-server
+
+service:
+  type: ClusterIP
+  port: 3030
+
+configmap:
+  configmapData:
+    SERVER_USERNAME: "production"
+    TEAM: "blue"
+
+
+resources: {}
+
+nodeSelector: {}
+
+# Uncomment this to deploy this service to nodes or node pools with the defined label.
+# nodeSelector:
+#   environment: production
+
+tolerations: []
+
+affinity: {}
+