Bug 1347371
Summary: | RFE: Balance Rabbitmq Queue Master Location on queue declaration with min-masters strategy | ||
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Product: | Red Hat OpenStack | Reporter: | Marian Krcmarik <mkrcmari> |
Component: | openstack-tripleo-heat-templates | Assignee: | Michele Baldessari <michele> |
Status: | CLOSED ERRATA | QA Contact: | Marian Krcmarik <mkrcmari> |
Severity: | medium | Docs Contact: | |
Priority: | unspecified | ||
Version: | 10.0 (Newton) | CC: | abeekhof, bperkins, dbecker, fdinitto, jschluet, mburns, michele, mlopes, morazi, oblaut, plemenko, rhel-osp-director-maint, royoung |
Target Milestone: | rc | Keywords: | FutureFeature, InstallerIntegration, Triaged |
Target Release: | 10.0 (Newton) | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | openstack-tripleo-heat-templates-5.0.0-0.20161008015357.0d3e3e3.1.el7ost | Doc Type: | Enhancement |
Doc Text: |
With this enhancement, RabbitMQ introduces the new HA feature of Queue Master distribution. One of the strategies is `min-masters`, which picks the node hosting the minimum number of masters.
This was added because of the possibility that one of the controllers may become unavailable, with Queue Masters then located on available controllers during queue declarations. Once the lost controller becomes available again, masters of newly-declared queues are not placed with priority to the controller with an obviously lower number of queue masters, and consequently the distribution may be unbalanced, with one of the controllers under significantly higher load in the event of multiple fail-overs.
As a result, this enhancement spreads out the queues across controllers after a controller fail-over.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2016-12-14 15:40:14 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 1384167 |
Description
Marian Krcmarik
2016-06-16 15:53:41 UTC
The goal of balancing the queues seems like a good one to me. Chris, can you take care of updating director after validating with Peter that this is the best way to achieve it please? I'd not expect this option to decrease availability in any way, but best to be sure. Verified. $ sudo grep min-masters /etc/rabbitmq/rabbitmq.config {queue_master_locator, <<"min-masters">>}, Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2016-2948.html |