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v0.12.x: A migration helper to disable core controller services when needed #1640
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…ces (kube-apiserver, kube-controller-manager and kube-scheduler) on existing/legacy controllers by sending them a request to do so via a special configmap. Update the handle-cluster-cidr-changes to use the functionality instead of its own custom job - which was unreliable.
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Codecov Report
@@ Coverage Diff @@
## v0.12.x #1640 +/- ##
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Coverage 38.13% 38.13%
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Files 75 75
Lines 4647 4647
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Hits 1772 1772
Misses 2630 2630
Partials 245 245Continue to review full report at Codecov.
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Add a new service that allows kube-aws upgrades to disable core services (kube-apiserver, kube-controller-manager and kube-scheduler) on existing/legacy controllers by sending them a request to do so via a special configmap.
Update the handle-cluster-cidr-changes to use the functionality instead of its own custom job - which was unreliable.
The idea is to re-use this service when performing upgrades where the incoming kubernetes version is 2 or more versions newer than the existing controllers, so that we can shut-down the controller-manager and scheduler on the old controllers in order to force them to run on the new node and prevent upgrade incompatibilities.