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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">in this change kolla-ansible removed setting the HA policies per default (along with why).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">TL;DR: The option `</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Lucida Console";color:#212121;background:#F8F9FA">amqp_durable_queues</span><span lang="EN-US" style="mso-fareast-language:EN-US">`
was not enabled on all openstack services, therefor HA queues do not make any sense (and actually actively make things worse).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">--<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Felix Huettner<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Satish Patel <satish.txt@gmail.com> <br>
<b>Sent:</b> Friday, February 10, 2023 5:47 PM<br>
<b>To:</b> ozzzo@yahoo.com<br>
<b>Cc:</b> OpenStack Discuss <openstack-discuss@lists.openstack.org><br>
<b>Subject:</b> Re: [kolla]RabbitMQ HA policies define<o:p></o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I went through that doc because it always shows up first in google search :) <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">My question was why the kolla default doesn't come with HA policies? I can surely add policy by myself and adjust requirements. I have also noticed without HA if any node fails then cause strange behavior in the entire cluster because of
missing queues/data etc. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Personally I hate HA because the majority of messages are stateless. In my experience HA is a little stable when it comes down to node failure but with performance big no. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Feb 10, 2023 at 11:15 AM Albert Braden <<a href="mailto:ozzzo@yahoo.com">ozzzo@yahoo.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">This has been discussed at great length; here are a couple of links that lead to interesting threads:<br>
<br>
<a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.openstack.org%2Fpipermail%2Fopenstack-discuss%2F2021-November%2F026074.html&data=05%7C01%7C%7C60f6a1fa3ee74910b82808db0b875351%7Cd04f47175a6e4b98b3f96918e0385f4c%7C0%7C0%7C638116448067688419%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2F2ewiZjNMTiVbO13shuiQBGgvHNWSAxw6cNCZ8GN2zo%3D&reserved=0" target="_blank">https://lists.openstack.org/pipermail/openstack-discuss/2021-November/026074.html</a><br>
<a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.openstack.org%2Fpipermail%2Fopenstack-discuss%2F2020-August%2F016362.html&data=05%7C01%7C%7C60f6a1fa3ee74910b82808db0b875351%7Cd04f47175a6e4b98b3f96918e0385f4c%7C0%7C0%7C638116448067688419%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Nivuk0mlqy%2F%2By8de3%2FiadRhB10XhSCgOeGszwdjRx0Q%3D&reserved=0" target="_blank">https://lists.openstack.org/pipermail/openstack-discuss/2020-August/016362.html</a><br>
<br>
There used to be a useful document here:<br>
<a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.openstack.org%2Fwiki%2FLarge_Scale_Configuration_Rabbit&data=05%7C01%7C%7C60f6a1fa3ee74910b82808db0b875351%7Cd04f47175a6e4b98b3f96918e0385f4c%7C0%7C0%7C638116448067688419%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=U9w8zVCx1C%2BJxBIB5iP8nTxoI4FDHnv76ezQmOgYubw%3D&reserved=0" target="_blank">https://wiki.openstack.org/wiki/Large_Scale_Configuration_Rabbit</a><br>
<br>
That link now points to the “Large Scale SIG” home page. Does anyone know where the useful RMQ document is? I assume that it is buried somewhere under “Large Scale Journey.”<br>
<br>
The bottom line is that, by default, kolla-ansible enables replication but not durable-queues, which is an unstable configuration. I believe that this may have been fixed in a newer version; we are on Train.<br>
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<a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.openstack.org%2Fpipermail%2Fopenstack-discuss%2F2020-August%2F016524.html&data=05%7C01%7C%7C60f6a1fa3ee74910b82808db0b875351%7Cd04f47175a6e4b98b3f96918e0385f4c%7C0%7C0%7C638116448067688419%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=q%2FVgkhGeq0q59W9h5%2BCqKCt7lbgMh1RdIMbxE%2F0LBW4%3D&reserved=0" target="_blank">https://lists.openstack.org/pipermail/openstack-discuss/2020-August/016524.html</a><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">On Thursday, February 9, 2023, 10:48:11 PM EST, Satish Patel <<a href="mailto:satish.txt@gmail.com" target="_blank">satish.txt@gmail.com</a>> wrote:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Folks,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">I have deployed 3 node kolla controllers and notice rabbitMQ doesn't have any HA policy for queues. when i rebooted one of the nodes and found some messages got lost. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">Any reason kolla doesn't use HA policies by default? <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica Neue";color:#26282A">If i want to add policies then where should i specify them or any doc you can point me to define policies. <o:p></o:p></span></p>
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