When a node goes away, a garbage collection (GC) process is triggered, leading to the deletion of associated pods. To enhance user experience, Titus employs a custom controller to maintain a history of Pod and Node objects, ensuring transparency. However, the absence of a satisfying explanation for why the agent was lost prompted further investigation into the root causes.
The addition of the `pod-termination-reason` annotation allows Netflix's engineering team to capture termination reasons, providing information to understand why nodes disappear.
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