UPSTREAM: 44798: Cinder: Automatically Generate Zone if Availability in Storage Class is not Configured #14159
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…in Storage Class is not Configured Backport of Kubernetes PR #44798 (kubernetes/kubernetes#44798). In case the availability parameter is not configured in a cinder Storage Class the cinder volume is always provisioned in the nova availability zone. That is incorrect. Now, the cinder volume is provisioned in a zone that is generated by an algorithm from the set of zone available in the cluster. Positive side-effect: cinder volumes for individual pods in a StatefulSet are provisioned in unique zones. This increases the StatefulSet resilience.
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lgtm |
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Evaluated for origin merge up to 879fc71 |
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[Test]ing while waiting on the merge queue |
pospispa
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May 12, 2017
…n Storage Class is not Configured Backport of Kubernetes PR openshift#3693 (kubernetes/website#3693). Corresponding source code OpenShift origin PR openshift#14159 (openshift/origin#14159). Documents the Cinder volume plugin behaviour in case the availability parameter in a Storage Class is not configured. Improves description of aws-ebs and gce-pd volume plugins behavior in case zone parameter in a Storage Class is not configured.
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flake: #14161 |
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Evaluated for origin test up to 879fc71 |
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continuous-integration/openshift-jenkins/test FAILURE (https://ci.openshift.redhat.com/jenkins/job/test_pull_request_origin/1391/) (Base Commit: f24a57f) |
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continuous-integration/openshift-jenkins/merge SUCCESS (https://ci.openshift.redhat.com/jenkins/job/merge_pull_request_origin/631/) (Base Commit: c48c4ea) (Image: devenv-rhel7_6228) |
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Backport of Kubernetes PR kubernetes/kubernetes#44798.
In case the
availabilityparameter is not configured in a cinder Storage Class the cinder volume is always provisioned in thenovaavailability zone. That is incorrect.Now, the cinder volume is provisioned in a zone that is generated by an algorithm from the set of zones available in the cluster.
Positive side-effect: cinder volumes for individual pods in a StatefulSet are provisioned in unique zones. This increases the StatefulSet resilience.
IMPORTANT: the backport was NOT tested. Testing requires an OpenStack cluster with at least 2 availability zones.
This PR resolves this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1447568
Corresponding documentation PR: openshift/openshift-docs#4409
@jsafrane @rootfs PTAL
@childsb @eparis please, merge.