How do I implement canary releases for Kubernetes namespaces?

Implementing canary releases in Kubernetes namespaces allows you to deploy new features to a small subset of users before rolling out changes to the entire application. This approach minimizes risk and ensures that issues can be caught early. Below is an example of how to set up canary releases using Kubernetes namespaces.


    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: my-app-canary
      namespace: canary
    spec:
      replicas: 2
      selector:
        matchLabels:
          app: my-app
          version: canary
      template:
        metadata:
          labels:
            app: my-app
            version: canary
        spec:
          containers:
          - name: my-app
            image: my-app:canary
            ports:
            - containerPort: 80

    ---
    
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: my-app-stable
      namespace: stable
    spec:
      replicas: 8
      selector:
        matchLabels:
          app: my-app
          version: stable
      template:
        metadata:
          labels:
            app: my-app
            version: stable
        spec:
          containers:
          - name: my-app
            image: my-app:stable
            ports:
            - containerPort: 80

    ---
    
    apiVersion: v1
    kind: Service
    metadata:
      name: my-app
      namespace: default
    spec:
      selector:
        app: my-app
      ports:
      - port: 80
        targetPort: 80
      type: LoadBalancer

How do I implement canary releases for Kubernetes namespaces?

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How do I implement canary releases for Kubernetes namespaces?

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