@nodebbvenkata Hi, could you elaborate on how the issue got resolved for you? I have a very similar setup to the one you have (kubernetes service + deployment) and I'm experiencing the same behaviour:

2023-03-20T15:31:29.934Z [4567/228] - error: NodeBB address in use, exiting...
Error: listen EADDRINUSE: address already in use 0.0.0.0:4567
    at Server.setupListenHandle [as _listen2] (node:net:1740:16)
    at listenInCluster (node:net:1788:12)
    at doListen (node:net:1937:7)
    at process.processTicksAndRejections (node:internal/process/task_queues:83:21)
2023-03-20T15:31:29.936Z [4567/228] - error: uncaughtException: listen EADDRINUSE: address already in use 0.0.0.0:4567
Error: listen EADDRINUSE: address already in use 0.0.0.0:4567