Bug 1379698
| Summary: | Change rabbitmq queues HA mode from ha-all to ha-exactly | ||
|---|---|---|---|
| Product: | Red Hat OpenStack | Reporter: | Marian Krcmarik <mkrcmari> |
| Component: | openstack-tripleo-heat-templates | Assignee: | Michele Baldessari <michele> |
| Status: | CLOSED ERRATA | QA Contact: | Udi Shkalim <ushkalim> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 11.0 (Ocata) | CC: | dbecker, fdinitto, mburns, mcornea, michele, morazi, rhel-osp-director-maint, ushkalim |
| Target Milestone: | Upstream M3 | Keywords: | InstallerIntegration, Triaged |
| Target Release: | 11.0 (Ocata) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | openstack-tripleo-heat-templates-6.0.0-3 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-05-17 19:33:51 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 | ||
This has been merged in the upstream master branch (aka ocata) Verified on: openstack-tripleo-heat-templates-6.0.0-0.9.el7ost.noarch Automation run passed. 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://access.redhat.com/errata/RHEA-2017:1245 |
Description of problem: It turns out that reducing number of rabbitmq queues in cluster significantly improves performance of cluster especially in the case of failover recovery time. Right now cluster uses ha-all mode for rabbitmq queues, I suggest to change this to ha-exactly mode and reducing number of queue copies to ceil(N/2) where N is number of controllers in the cluster - so in typical scenario of 3 controller It would be 2. It does not make much sense to keep the copies of queues over whole cluster since if the quorum of nodes is lost then the rest of cluster nodes will be stopped anyway. This current setting: pcs resource show rabbitmq Resource: rabbitmq (class=ocf provider=heartbeat type=rabbitmq-cluster) Attributes: set_policy="ha-all ^(?!amq\.).* {"ha-mode":"all"}" And I am requesting to change the parameters of rabbitmq pacemaker resource to: pcs resource show rabbitmq Resource: rabbitmq (class=ocf provider=heartbeat type=rabbitmq-cluster) Attributes: set_policy="ha-all ^(?!amq\.).* {"ha-mode":"exactly","ha-params":2}" According to my tests, I achieved to reduce recovery time singificantly.