Solution:Step 1: Check policy application behaviorPolicies apply only to new queues or queues restarted after policy set.Step 2: Identify why existing queues are not mirroredExisting queues created before policy need to be deleted or restarted to apply mirroring.Final Answer:The policy requires a re

[Solved] You set this policy:rabbitmqctl set_policy ha-all ".*" '{"ha-mode":"all"}'But queues are not mirrored. What is the likely problem? | RabbitMQ

RabbitMQ - Clustering

You set this policy:
rabbitmqctl set_policy ha-all ".*" '{"ha-mode":"all"}'
But queues are not mirrored. What is the likely problem?

AThe policy requires a restart of the queue or server to apply

BThe pattern ".*" does not match queue names

CThe policy was set but RabbitMQ was not restarted

DThe JSON syntax is incorrect

Step-by-Step Solution

Solution:

Step 1: Check policy application behavior
Policies apply only to new queues or queues restarted after policy set.
Step 2: Identify why existing queues are not mirrored
Existing queues created before policy need to be deleted or restarted to apply mirroring.
Final Answer:
The policy requires a restart of the queue or server to apply -> Option A
Quick Check:
Policy applies only on new or restarted queues [OK]

Quick Trick: Policies apply only to new or restarted queues [OK]

Common Mistakes:

MISTAKES

Thinking RabbitMQ restart is needed
Assuming pattern ".*" never matches
Believing JSON syntax is wrong when it is correct

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You set this policy:

Step 1: Check policy application behavior

Step 2: Identify why existing queues are not mirrored

Final Answer:

Quick Check:

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