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<p>Hi all,</p>
<p>We are randomly seeing slow instance launch / deletion times and
it appears to be because of RabbitMQ. We are seeing a lot of these
messages in the logs for Nova and Neutron:</p>
<p>ERROR oslo.messaging._drivers.impl_rabbit [-]
[f4ab3ca0-b837-4962-95ef-dfd7d60686b6] AMQP server on
10.6.2.212:5671 is unreachable: Too many heartbeats missed. Trying
again in 1 seconds. Client port: 37098: ConnectionForced: Too many
heartbeats missed</p>
<p>The RabbitMQ cluster isn't under high load and I am not seeing
any packets drop over the network when I do some tracing.</p>
<p>We are only running 15 compute nodes currently and have >1000
instances so it isn't a large deployment.<br>
</p>
<p>Are there any good configuration tweaks for RabbitMQ running on
OpenStack Queens? </p>
<p>Many Thanks,<br>
</p>
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