Issue

• I would like to delete the default “kubernetes shared cloud”
• I would like to restrict the default “kubernetes shared cloud” to only certain masters

Environment

• CloudBees CI (CloudBees Core) on Modern Cloud Platforms
• Kubernetes Plugin
• Operations Center Kubernetes Cloud Plugin

Explanation

The Operations Center contains an auto-configured “kubernetes shared cloud” item at CJOC’s root which allows CJOC users to globally edit master pod templates in Operations Center. This item is a Shared Cloud Configuration.

Shared Cloud Configuration items hold a Jenkins cloud configuration - in that case Kubernetes plugin configuration - that is automatically propagated down to the masters. But this propagation is restricted to sibling masters or masters in sub-folders of the container where the shared cloud configuration item is defined. The Shared Cloud Configuration follow the same propagation model as Shared Agents. See an example in the Shared Agents documentation.

The automatically created “kubernetes shared cloud” is defined at root and therefore propagated to all masters. It is also automatically created on startup of the CJOC if it does not exist.

Resolution

To delete the global “kubernetes shared cloud”, delete the item and add the system property -Dcom.cloudbees.opscenter.clouds.kubernetes.KubernetesConfiguration.autoconfigure=false on CJOC startup (in the cloudbees-core.yaml) so that it is not recreated on every startup.