Creating your first Helm Chart

lets-chat-app.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: lets-chat-app
  labels:
    app: lets-chat
    tier: frontend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: lets-chat
        tier: frontend
    spec:
      containers:
      - name: lets-chat-app
        image: "sdelements/lets-chat:latest"
        imagePullPolicy: IfNotPresent
        ports:
        - name: http
          containerPort: 8080
        env:
        - name: LCB_DATABASE_URI
          value: mongodb://mongo/letschat
---
apiVersion: v1
kind: Service
metadata:
  name: lets-chat-app
  labels:
    app: lets-chat
    tier: frontend
spec:
  type: NodePort
  ports:
  - port: 8080
    targetPort: 8080
    protocol: TCP
    name: lets-chat-app-port
  selector:
    app: lets-chat
    tier: frontend

lets-chat-mongo.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: lets-chat-mongo
  labels:
    app: lets-chat
    tier: backend
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: lets-chat
        tier: backend
    spec:
      containers:
      - name: lets-chat-mongo
        image: "mongo:3.5.11"
        imagePullPolicy: IfNotPresent
        ports:
        - name: http
          containerPort: 27017
---
apiVersion: v1
kind: Service
metadata:
  name: mongo
  labels:
    tier: backend
spec:
  type: ClusterIP
  selector:
    app: lets-chat
    tier: backend
  ports:
  - port: 27017
    targetPort: 27017
    protocol: TCP
    name: lets-chat-mongo-port

lets-chat_Chart.yaml

apiVersion: v1
description: A Helm chart for Kubernetes that creates a PoC-level deployment of Let's Chat and Mongo.
name: lets-chat
version: 0.1.0
sources:
  - https://github.com/sdelements/lets-chat
  - https://hub.docker.com/r/library/mongo/
maintainers:
  - name: Rick Osowski
    email: osowskeee@gmail.com

lets-chat_templates_deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: {{ template "fullname" . }}
  labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
spec:
  replicas: {{ .Values.replicaCount }}
  template:
    metadata:
      labels:
        app: {{ template "fullname" . }}
        tier: {{ .Values.service.tier }}
    spec:
      containers:
      - name: {{ .Chart.Name }}
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        imagePullPolicy: {{ .Values.image.pullPolicy }}
        ports:
        - name: http
          containerPort: {{ .Values.service.internalPort }}
        env:
        - name: LCB_DATABASE_URI
          value: mongodb://{{ .Values.mongo.host }}/letschat
        resources:
{{ toYaml .Values.resources | indent 10 }}

lets-chat_templates_service.yaml

apiVersion: v1
kind: Service
metadata:
  name: {{ template "fullname" . }}
  labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
spec:
  type: {{ .Values.service.type }}
  ports:
  - port: {{ .Values.service.externalPort }}
    targetPort: {{ .Values.service.internalPort }}
    protocol: TCP
    name: {{ .Values.service.name }}
  selector:
    app: {{ template "fullname" . }}
    tier: {{ .Values.service.tier }}

lets-chat_values.yaml

# Default values for lets-chat.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.
replicaCount: 1
image:
  repository: sdelements/lets-chat
  tag: latest
  pullPolicy: IfNotPresent
service:
  name: lets-chat
  tier: frontend
  type: NodePort
  protocol: TCP
  internalPort: 8080
  externalPort: 8080
mongo:
  host: mongo-asdf
resources:
  limits:
    memory: 512Mi
  requests:
    memory: 128Mi

mongo_Chart.yaml

apiVersion: v1
description: A Helm chart for Kubernetes that creates a PoC-level deployment of Mongo.
name: mongo
version: 0.1.0
sources:
  - https://hub.docker.com/r/library/mongo/
maintainers:
  - name: Rick Osowski
    email: rosowski@gmail.com

mongo_templates_deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: {{ template "fullname" . }}
  labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
spec:
  replicas: {{ .Values.replicaCount }}
  template:
    metadata:
      labels:
        app: {{ template "fullname" . }}
        tier: {{ .Values.service.tier }}
    spec:
      containers:
      - name: {{ .Chart.Name }}
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        imagePullPolicy: {{ .Values.image.pullPolicy }}
        ports:
        - name: http
          containerPort: {{ .Values.service.internalPort }}
        resources:
{{ toYaml .Values.resources | indent 10 }}

mongo_templates_service.yaml

apiVersion: v1
kind: Service
metadata:
  name: {{ template "fullname" . }}
  labels:
    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
spec:
  type: {{ .Values.service.type }}
  ports:
  - port: {{ .Values.service.externalPort }}
    targetPort: {{ .Values.service.internalPort }}
    protocol: TCP
    name: {{ .Values.service.name }}
  selector:
    app: {{ template "fullname" . }}
    tier: {{ .Values.service.tier }}

mongo_values.yaml

# Default values for mongo.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.
replicaCount: 1
image:
  repository: mongo
  tag: 3.5.11
  pullPolicy: IfNotPresent
service:
  name: mongo
  tier: backend
  type: ClusterIP
  protocol: TCP
  externalPort: 27017
  internalPort: 27017
resources:
  limits:
    memory: 512Mi
  requests:
    memory: 128Mi