<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Thanks Remo, could you elaborate a little? Which is part of RabbitMQ? The HA layer or the message retransmission? I'm currently using qpid. Also, just so I'm clear, is it the openstack code or the low-level messaging drivers (rabbit, zmq, qpid) that retransmit on message delivery failure?</div><div><br></div><div>Thanks!<br><br>Sent from my iPhone</div><div><br>On Oct 13, 2014, at 11:59 PM, Remo Mattei <<a href="mailto:remo@italy1.com">remo@italy1.com</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html charset=us-ascii">That is part of RabbitMQ and yes it will resend the msg. <div class=""><br class=""></div><div class="">Remo <br class=""><div><blockquote type="cite" class=""><div class="">On Oct 13, 2014, at 22:31, Aaron Knister <<a href="mailto:aaron.knister@gmail.com" class="">aaron.knister@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class=""><div class="">Hi Everyone,</div><div class=""><br class=""></div><div class="">I'm building a production-grade cloud where HA is a requirement. I'm currently working on implementing HA of the messaging layer and am not clear on what the expectations/assumptions are of the messaging layer regarding message durability and reliability. I've seen documentation scattered about that suggests OpenStack makes no assumptions that messages will be delivered or will need to persist for any period of time (<a href="https://openstack.redhat.com/Highly_Available_Qpid_for_OpenStack" class="">https://openstack.redhat.com/Highly_Available_Qpid_for_OpenStack</a>).</div><div class=""><br class=""></div><div class="">What's the consequence of RPC message loss within openstack? Is it true that it will resend messages?</div><div class=""><br class=""></div><div class="">Thanks!</div><div class=""><br class=""></div><div class="">-Aaron</div>
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