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What is an index alias in Elasticsearch?

easy🧠 Conceptual Q1 of 15
Elasticsearch - Index Management

What is an index alias in Elasticsearch?

AA backup copy of an index stored in a different cluster
BA name that points to one or more indexes to simplify queries
CA special type of index that stores only metadata
DA user account with permissions to access indexes
Step-by-Step Solution
Solution:

  1. Step 1: Understand the concept of index alias

    An index alias is a pointer or shortcut that can refer to one or more indexes in Elasticsearch.

  2. Step 2: Identify the correct description

    It simplifies querying by allowing users to use a friendly name instead of actual index names.

  3. Final Answer:

    A name that points to one or more indexes to simplify queries -> Option B

  4. Quick Check:

    Index alias = Pointer to indexes [OK]
Quick Trick: Alias points to indexes, not a backup or user [OK]
Common Mistakes:
MISTAKES
  • Confusing alias with backup or snapshot
  • Thinking alias is a user or permission
  • Assuming alias stores data itself

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