International Business Machines Corporation

Hongsen Liu

Gang Tang

Hong Jun Tu

Jian Guo Liu

Jun Wei Jw Zhao

An embodiment detects, by a packet detection module on a first worker node, a first synchronization message (SYN) issued from a client pod on the first worker node and directed to a first server pod on a second worker node and generates a first SYN record in a connection table stored on the first worker node. The embodiment detects, by the packet detection module, a second SYN issued from the client pod and directed to the first server pod and generates a server pod status record stored in memory on the first worker node indicative of the first server pod having an unhealthy status. The embodiment identifies an available server pod having a healthy status and generates a detour routing rule in a routing table on the first worker node indicative of a revised connection in which the identified available server pod replaces the first server pod.

Distributed health monitoring and rerouting in a computer network

Disclosed are a computer-implemented method, a system and a computer program product for TCP session closure in a container orchestration system. In the computer-implemented method for TCP session closure in a container orchestration system, a first pod being not alive in a second node can be determined by one or more processing units at a first node. A TCP session between a second pod in the first node and the first pod can be determined by one or more processing units at the first node based on a pod IP address of the first pod. The TCP session between the second pod and the first pod can be closed by one or more processing units at the first node.

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Beijing, China

Hongsen Liu