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In an active-passive Kafka cluster setup, what happens when the active cluster fails?

easy📝 Conceptual Q2 of 15
Kafka - Multi-Datacenter and Replication
In an active-passive Kafka cluster setup, what happens when the active cluster fails?
AThe passive cluster deletes all data.
BBoth clusters stop working until manual restart.
CThe active cluster recovers without failover.
DThe passive cluster automatically becomes active and takes over.
Step-by-Step Solution
Solution:

  1. Step 1: Identify failover behavior in active-passive

    When the active cluster fails, the passive cluster is designed to take over automatically.

  2. Step 2: Confirm passive cluster role

    The passive cluster waits in standby mode and activates on failure.

  3. Final Answer:

    The passive cluster automatically becomes active and takes over. -> Option D

  4. Quick Check:

    Failover in active-passive = D [OK]
Quick Trick: Passive cluster activates only on active failure [OK]
Common Mistakes:
  • Assuming both clusters stop working
  • Thinking active cluster recovers without failover
  • Believing passive cluster deletes data

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