Abstract: It is disclosed a computer-implemented method, a computing system, and a computer program product for service rolling-updating at a node in a container orchestrator system. In the method, in response to an instruction to update a service deployed on a first pod of a plurality of pods, a second pod is created at the node. The service is deployed on each of the plurality of pods at the node. A rule indicating that a set of requests for the service deployed on the first pod are to be routed to the second pod is generated. The first pod is deleted from the node. The set of requests are routed to the second pod according to the rule.