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Migrating KubePlus to 4.0.0 version

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Dev edited this page Aug 13, 2024 · 2 revisions

KubePlus chart before 4.0.0 defined KubePlus's built-in CRDs (ResourceComposition, ResourceMonitor, ResourcePolicy, ResourceEvent) in the templates folder of the Helm chart. This caused the CRDs to be deleted (and recreated) whenever KubePlus was upgraded. Deletion of ResourceComposition led to the deletion of any application CRDs and application instances created. This was problematic as it caused application instances to be deleted on KubePlus upgrade.

In KubePlus chart 4.0.0, we have moved the built-in CRDs to the "crds" folder inside the chart. This ensures that the CRDs are not deleted on KubePlus upgrade (Helm does not delete the CRDs defined in the "crds" folder).

Here are the steps to test the migration functionality:

Install KubePlus version < 4.0.0

helm install kubeplus "https://github.com/cloud-ark/operatorcharts/blob/master/kubeplus-chart-3.0.47.tgz?raw=true" --kubeconfig=kubeplus-saas-provider.json -n $KUBEPLUS_NS

Wail till KubePlus Pod is running.

Deploy HellWorldService by following the steps here:

Upgrade KubePlus:

kubectl annotate customresourcedefinition resourcepolicies.workflows.kubeplus helm.sh/resource-policy=keep

kubectl annotate customresourcedefinition resourceevents.workflows.kubeplus helm.sh/resource-policy=keep

kubectl annotate customresourcedefinition resourcemonitors.workflows.kubeplus helm.sh/resource-policy=keep

kubectl annotate customresourcedefinition resourcecompositions.workflows.kubeplus helm.sh/resource-policy=keep

helm upgrade kubeplus "https://github.com/cloud-ark/operatorcharts/blob/master/kubeplus-chart-4.0.0.tgz?raw=true" -n $KUBEPLUS_NS --kubeconfig=kubeplus-saas-provider.json

Once the KubePlus Pod is running:

  • verify that the previously created HelloWorldService instance is still present
  • verify that a new HelloWorldService instance can be created
  • verify that HelloWorldService instances can be deleted
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