Final application, also known as CNF Application, which is a standard TestPMD instance using the default MAC forwarding module. It uses two components:
- TestPMD CR, which creates a pod to implement the MAC forwarding module as final application. Related pod is
testpmd-app-<x>pod (only one replica is used). - TestPMD Operator, ensuring CR reconciliation via controller-manager pod. Related pod is
testpmd-operator-controller-manager-<x>pod.
The following information can be extracted from pod logs:
- To see the TestPMD statistics printed periodically for this module, you can rely on
testpmd-app-<x>pod logs. - In
testpmd-operator-controller-manager-<x>pod, you can see the execution of the Ansible playbooks that ensures the reconciliation loop of the operator.
Base structure is achieved with the following commands, then it's just a matter of accommodating the required code for the operator in the corresponding files and folders:
$ mkdir testpmd-operator; cd testpmd-operator
$ operator-sdk init --domain openshift.io --plugins ansible
$ operator-sdk create api --version v1 --generate-role --group examplecnf --kind TestPMD
Apart from the modifications you have to do, you also need to update the operator version in these files:
Also, make sure that the operator version is within the interval defined in required-annotations.yaml file for olm.skipRange annotation, else update that file to modify the current range.
A common change is the update of Operator SDK version used in the operator. Here's an example where this is done.