Deployments and ReplicaSets

Deployments manage a ReplicaSet, which in turn manages your pods. Deployments ensure the desired number of pod replicas are running and allow for updates and rollbacks.

Key Benefits:

Declarative updates
Rolling updates and rollbacks
Automatic pod rescheduling

Example Deployment YAML:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

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