Kuidas saab Kubernetes-klasteris käivitada Docker-pildi?

In Kubernetes, to start a Docker image, a Pod or Deployment object is usually created, which specifies the required container image.

Main methods:

1. Create a Pod directly by specifying the Docker image in a YAML manifest:

apiVersion: v1
kind: Pod
metadata:
  name: example-pod
spec:
  containers:
  - name: example-container
    image: your-docker-image:tag

2. Use Deployment to manage scaling and updates:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: example-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: example
  template:
    metadata:
      labels:
        app: example
    spec:
      containers:
      - name: example-container
        image: your-docker-image:tag

3. kubectl run — command to quickly start a container from an image:

kubectl run example-pod --image=your-docker-image:tag

Kubernetes will automatically download the image from Docker Registry and start the container within the cluster.