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Why does a ReplicaSet in Kubernetes help keep an application available?

easy📝 Conceptual Q1 of 15
Kubernetes - ReplicaSets and Deployments
Why does a ReplicaSet in Kubernetes help keep an application available?
AIt stores application data persistently
BIt ensures the desired number of pod replicas are always running
CIt manages network traffic between pods
DIt automatically updates the application code
Step-by-Step Solution
Solution:

  1. Step 1: Understand ReplicaSet's role

    A ReplicaSet's job is to keep a set number of pod replicas running at all times.

  2. Step 2: Connect to availability

    By maintaining the desired number of pods, it ensures the application stays available even if some pods fail.

  3. Final Answer:

    It ensures the desired number of pod replicas are always running -> Option B

  4. Quick Check:

    ReplicaSet availability = ensures pod replicas [OK]
Quick Trick: ReplicaSets keep pods running to maintain availability [OK]
Common Mistakes:
  • Confusing ReplicaSet with Deployment updating code
  • Thinking ReplicaSet manages storage
  • Assuming ReplicaSet handles network traffic

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