Add Leader election flags for machine controller#108
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openshift-merge-robot merged 1 commit intoopenshift:masterfrom Jul 9, 2020
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Add Leader election flags for machine controller#108openshift-merge-robot merged 1 commit intoopenshift:masterfrom
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Using leader election by default will add stronger guarantees than we have today that only one controller is running at a time to protect against edge cases where the deployment replica could be increased or upgrades with permissive maxSurge. Relevant provider PRs: - openshift/cluster-api-provider-gcp#85 - openshift/cluster-api-provider-aws#315 - openshift/cluster-api-provider-azure#122 - openshift/cluster-api-provider-openstack#108 - openshift/cluster-api-provider-baremetal#81 - openshift/cluster-api-provider-ovirt#55 - openshift#571
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Using leader election by default will add stronger guarantees than we have today that only one controller is running at a time to protect against edge cases where the deployment replica could be increased or upgrades with permissive maxSurge. Relevant provider PRs: - openshift/cluster-api-provider-gcp#85 - openshift/cluster-api-provider-aws#315 - openshift/cluster-api-provider-azure#122 - openshift/cluster-api-provider-openstack#108 - openshift/cluster-api-provider-baremetal#81 - openshift/cluster-api-provider-ovirt#55 - openshift#571
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What this PR does / why we need it:
Introduces leader-election option for machine controllers, allowing to eliminate edge cases when multiple controllers could be running. Allows integration with MAO PR: openshift/machine-api-operator#571
Which issue(s) this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)format, will close the issue(s) when PR gets merged):Fixes #
Special notes for your reviewer:
Release note: