Elasticsearch - Cluster Management
What is the main purpose of performing a
rolling upgrade in Elasticsearch?What is the main purpose of performing a rolling upgrade in Elasticsearch?
easy🧠 Conceptual Q11 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand rolling upgrade concept
A rolling upgrade updates nodes one at a time to keep the cluster running.Step 2: Compare options
Only To upgrade nodes one by one without stopping the entire cluster describes upgrading nodes one by one without stopping the cluster.Final Answer:
To upgrade nodes one by one without stopping the entire cluster -> Option CQuick Check:
Rolling upgrade = upgrade nodes individually [OK]
Quick Trick: Rolling upgrade means upgrading nodes one by one [OK]
Common Mistakes:
MISTAKES- Thinking all nodes upgrade at once
- Confusing rolling upgrade with cluster shutdown
- Assuming data is deleted during upgrade
Master "Cluster Management" in Elasticsearch
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