feat(helm): add basic example helm chart for sample-project-core

charts/core/.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/

charts/core/Chart.yaml

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+apiVersion: v2
+name: core
+description: A Helm chart for CodeZero's sample-project-core
+
+# 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: 0.1.1
+
+# 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: "0.0.1"

charts/core/templates/NOTES.txt

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+Hurray, the core service has been deployed!

charts/core/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "core.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 "core.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 "core.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "core.labels" -}}
+helm.sh/chart: {{ include "core.chart" . }}
+{{ include "core.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "core.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "core.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

charts/core/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "core.fullname" . }}-config
+  labels:
+    {{- include "core.labels" . | nindent 4 }}
+data:
+  # These are here to demonstrate capturing config
+  # values in using the environment features of czctl
+  SAMPLE1_KEY: VALUE1
+  SAMPLE2_KEY: VALUE2
+  SAMPLE_PROJECT_VERSION: "Version Production"
+  SAMPLE_PROJECT_API_PORT: "{{ .Values.config.containerPort }}"

charts/core/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "core.fullname" . }}
+  labels:
+    {{- include "core.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "core.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "core.selectorLabels" . | nindent 8 }}
+    spec:
+      securityContext:
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          env:
+            - name: SP_LEAF_URL
+              value: http://sample-project-leaf:3010
+            - name: SP_DB_URL
+              value: mongodb://sample-project-database:27017/sample-project-database
+          envFrom:
+            - configMapRef:
+                name: {{ include "core.fullname" . }}-config
+          volumeMounts:
+            - name: data
+              mountPath: /usr/src/app/data
+          ports:
+            - name: http
+              containerPort: {{ .Values.config.containerPort }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /api
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /api
+              port: http
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: {{ include "core.fullname" . }}-pvc

charts/core/templates/pvc.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "core.fullname" . }}-pvc
+  labels:
+    {{- include "core.labels" . | nindent 4 }}
+spec:
+  resources:
+    requests:
+      storage: 1Gi
+  accessModes:
+    - ReadWriteOnce

charts/core/templates/service.yaml

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

charts/core/values.yaml

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+# Default values for core.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: c6oio/sample-project-core
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: "latest"
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+service:
+  type: ClusterIP
+  port: 3000
+
+config:
+  containerPort: 3000