Create an identical pod using different values-CodePudding

I currently have an app deployed on k8s using Skaffold. Using Helm I have defined the main deployment.yaml manifest as a template and used a values.yaml to insert other values into that deployment template.

What I would like to do is have 2 deployments of the same app using different values from the values.yaml file. So essentially 2 pods running the same application aside from the different values provided, for instance a my-app-blue pod and my-app-green pod. Is there anyway that I can do this without having to use a whole new deployment.yaml file? Sorry for any ambiguity I'm new to K8s, Helm, and Skaffold.

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
   namespace: {{ .Values.namespace }}
   name: {{ .Values.name }}
spec:
   replicas: {{ .Values.blue-deployment.replicas }}
   template:
      spec:
         containers:
            -  name: {{ .Values.blue-deployment.name }}
               image: {{ .Values.blue-deployment.image }}

values.yaml

namespace: my-app
name: app

blue-deployment:
   name: blue
   image: my-image
   replicas: 1
   env:
      - name: COLOR
        value: 'blue'

green-deployment:
   name: green
   image: my-image
   replicas: 1
   env:
      - name: COLOR
        value: 'green'

skaffold.yaml

apiVersion: skaffold/v2beta
kind: Config
build:
   artifacts:
      - image: blue-deployment
        context: './'
deploy:
   - name: my-application
     chartPath: kubernetes
     valuesFiles:
        - kubernetes/values.yaml
     namespace: my-app

directory structure:

myApp/
kubernetes/
   templates/
      myApp/
         deployment.yaml
   values.yaml
skaffold.yaml
Dockerfile

CodePudding user response：

Just use a loop. helm range

values.yaml

namespace: my-app
name: app

deps:
  - name: blue
    image: my-image
    replicas: 1
    env:
      - name: COLOR
        value: 'blue'

  - name: green
    image: my-image
    replicas: 1
    env:
      - name: COLOR
        value: 'green'

deployment.yaml

{{- $i, $v := range .Values.deps}}
---
apiVersion: apps/v1
kind: Deployment
metadata:
   namespace: {{ .Values.namespace }}
   name: {{ $v.name }}
spec:
   replicas: {{ $v.replicas }}
   template:
      spec:
         containers:
            -  name: {{ $v.name }}
               image: {{ $v.image }}
{{- end }}

output

---
apiVersion: apps/v1
kind: Deployment
metadata:
   namespace: my-app
   name: blue
spec:
   replicas: 1
   template:
      spec:
         containers:
            -  name: blue
               image: my-image
---
apiVersion: apps/v1
kind: Deployment
metadata:
   namespace: my-app
   name: green
spec:
   replicas: 1
   template:
      spec:
         containers:
            -  name: green
               image: my-image