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2018-06-24 19:25:44 -0500 问了问题 Error: The broker has blocked the connection: low on memory

Hi there, I'm getting an error from the RMQ cluster for almost all openstack services. The error message is "The broker has blocked the connection: low on memory". All openstack services are working fine, there is at least 40% available memory in the RMQ cluster in any point in time.

My openstack cluster contains 3 controllers, rmq cluster are installed on each controller. The RabbitMQ configuration in openstack services are: [default] transport_url = rabbit://user:password@controller01:5672,user:password@controller02:5672,user:password@controller03:5672

[oslo_messaging_rabbit] rabbit_durable_queues=true rabbit_retry_interval=1 rabbit_retry_backoff=2 rabbit_ha_queues=true