[Solved] Which of the following is the correct way to define a watch in an Operator's controller code? — Ans: controller.Watch(&source.Kind{Type: &appsv1.Deployment{}},... | Kubernetes

Kubernetes - Operators and Custom Resources

Which of the following is the correct way to define a watch in an Operator's controller code?

Acontroller.Observe(&source.Kind{Type: &corev1.Service{}}, &handler.EnqueueRequestForObject)

Bcontroller.Listen(&source.Pod{Type: &corev1.Pod{}}, &handler.EnqueueRequestForObject)

Ccontroller.Monitor(&source.Kind{Type: &corev1.Namespace{}}, &handler.EnqueueRequestForObject)

Dcontroller.Watch(&source.Kind{Type: &appsv1.Deployment{}}, &handler.EnqueueRequestForObject)

Step-by-Step Solution

Solution:

Step 1: Recall correct watch syntax
In Operator SDK, watching a resource uses controller.Watch with source.Kind and handler.EnqueueRequestForObject.
Step 2: Validate options
Only controller.Watch(&source.Kind{Type: &appsv1.Deployment{}}, &handler.EnqueueRequestForObject) uses correct method and types; others use invalid methods or types.
Final Answer:
controller.Watch(&source.Kind{Type: &appsv1.Deployment{}}, &handler.EnqueueRequestForObject) -> Option D
Quick Check:
Watch syntax = controller.Watch + source.Kind [OK]

Quick Trick: Use controller.Watch with source.Kind to watch resources [OK]

Common Mistakes:

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Which of the following is the correct way to define a watch in an Operator's controller code?