helm-microservice

In this part we want to deploy a web application. You can replace it with your own image but here we use … The values to have a sample app can be found in this file. We set the replicas to 1:

global:
  replicaCount: 1

You can increase it and upgrade your helm release whenever you want. Then comes the image info:

image:
  repository: "stefanprodan/podinfo"
  tag: "latest"
  pullPolicy: Always

The tag may be changed if you need another version of the image. To expose application define Service:

services:
- name: web
  type: ClusterIP
  annotations: {}
  specs:
  - port: 9898
    targetPort: 9898
    name: web

Then we define ingress:

ingress:
  enabled: true
  annotations: 
      traefik.ingress.kubernetes.io/router.entrypoints: websecure 
      traefik.ingress.kubernetes.io/router.tls: "true" 
      traefik.ingress.kubernetes.io/router.tls.certresolver: "letsencrypt"
  hosts:
    - host: api.example.com
      servicePort: 9898
      serviceName: web
      path: /
      pathType: Prefix
  tls: []

This ingress is for Traefik. Adjust it based on your ingress controller.

And finally the resources:

resources:
  limits:
    cpu: 100m
    memory: 200Mi
  requests:
    cpu: 100m
    memory: 200Mi

This is not mandatory but it is a good practice to define resources for Pods. Now you have the values to deploy the application. Install it with a command like:

helm install backend app/app --values ./values.yaml

And have fun!

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