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The calicoctl-utility container is leaving behind zombie processes and setting 'shareProcessNamespace: true' eliminates that problem. When you enable process namespace sharing for a Pod, Kubernetes uses a single process namespace for all the containers in that Pod. The Kubernetes Pod infrastructure container becomes PID 1 and automatically reaps orphaned processes. [0] [0]https://cloud.google.com/solutions/best-practices-for-building-containers#solution_2_enable_process_namespace_sharing_in_kubernetes Change-Id: I8efc08942ac281f5da0f0819fc5f181eca15d25b