Updated on 2025-12-22 GMT+08:00
Why Can't I Select Two AZs?
RabbitMQ 3.x.x does not support two AZs. RabbitMQ AMQP-0-9-1 supports two AZs.
Because there are split-brain risks. For higher reliability, you are advised to select three or more AZs when creating a cluster RabbitMQ instance.
Parent topic: Instances
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