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Kubernetes ReplicaSet Explained: API Resource, YAML Example, and Use Cases

apiVersion: extensions/v1beta1
kind: ReplicaSet
metadata:
  # Unique key of the ReplicaSet instance
  name: replicaset-example
spec:
  # 3 Pods should exist at all times.
  replicas: 3
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      # Run the nginx image
      - name: nginx
        image: nginx:1.10
Code language: PHP (php)
apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: frontend
  labels:
    app: guestbook
    tier: frontend
spec:
  # modify replicas according to your case
  replicas: 3
  selector:
    matchLabels:
      tier: frontend
  template:
    metadata:
      labels:
        tier: frontend
    spec:
      containers:
      - name: php-redis
        image: scmgalaxy/nginx-devopsschoolv1


apiVersion: apps/v1
kind: ReplicaSet
metadata:
  name: my-replicaset
spec:
  replicas: 2
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: my-container
        image: nginxCode language: PHP (php)

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I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at <a href="https://www.cotocus.com/">Cotocus</a>. I share tech blog at <a href="https://www.devopsschool.com/">DevOps School</a>, travel stories at <a href="https://www.holidaylandmark.com/">Holiday Landmark</a>, stock market tips at <a href="https://www.stocksmantra.in/">Stocks Mantra</a>, health and fitness guidance at <a href="https://www.mymedicplus.com/">My Medic Plus</a>, product reviews at <a href="https://www.truereviewnow.com/">TrueReviewNow</a> , and SEO strategies at <a href="https://www.wizbrand.com/">Wizbrand.</a> Do you want to learn <a href="https://www.quantumuting.com/">Quantum Computing</a>? <strong>Please find my social handles as below;</strong> <a href="https://www.rajeshkumar.xyz/">Rajesh Kumar Personal Website</a> <a href="https://www.youtube.com/TheDevOpsSchool">Rajesh Kumar at YOUTUBE</a> <a href="https://www.instagram.com/rajeshkumarin">Rajesh Kumar at INSTAGRAM</a> <a href="https://x.com/RajeshKumarIn">Rajesh Kumar at X</a> <a href="https://www.facebook.com/RajeshKumarLog">Rajesh Kumar at FACEBOOK</a> <a href="https://www.linkedin.com/in/rajeshkumarin/">Rajesh Kumar at LINKEDIN</a> <a href="https://www.wizbrand.com/rajeshkumar">Rajesh Kumar at WIZBRAND</a> <a href="https://www.rajeshkumar.xyz/dailylogs">Rajesh Kumar DailyLogs</a>

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