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Design

IBM Common Service Operator is designed as the entrance of the IBM Common Services.

There are multiple individual services in IBM Common Services, we need a method to unify the installation of these individual services.

A single cluster can have multiple IBM Common Service Operator installed, and all these operators have same function.

This Operator is a minimal operator that only have a single API and no controller, it will create/update the IBM Common Services related Kubernetes resources during the start of Operator process.

It will:

  • create the ibm-common-services namespace, all the individual services will be installed into this namespace
  • create the operand-deployment-lifecycle-manager subscription which will trigger the ODLM to be installed in all namespaces mode
  • create the OperandConfig and OperandRegistry of IBM Common Services under ibm-common-services namespace which tells the individual service configuration and location, later users can manually create OperandRequest to trigger the installation
  • create extra Kubernetes resources, there is a build/resources/extra directory, putting Kuberentes resource YAML files to this directory, the operator will automatically create them(note: one YAML file should only contain one Kubernetes resource)

The main logic is inside pkg/bootstrap/init.go file.