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How can you programmatically react to a cluster health status of yellow to improve reliability in a production system?

hard🚀 Application Q9 of Q15
Elasticsearch - Cluster Management
How can you programmatically react to a cluster health status of yellow to improve reliability in a production system?
ATrigger alert and increase replica shards to restore full redundancy
BIgnore the status since yellow is safe
CDelete indices to reduce load
DRestart all nodes immediately
Step-by-Step Solution
Solution:

  1. Step 1: Understand yellow status implications

    Yellow means some replicas are unassigned, risking data redundancy.

  2. Step 2: Define programmatic response

    Triggering alerts and increasing replicas helps restore full redundancy and reliability.

  3. Final Answer:

    Trigger alert and increase replica shards to restore full redundancy -> Option A

  4. Quick Check:

    Yellow status reaction = alert and fix replicas [OK]
Quick Trick: Alert and add replicas on yellow status [OK]
Common Mistakes:
MISTAKES
  • Ignoring yellow status
  • Deleting indices unnecessarily
  • Restarting nodes without cause

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