How to find when nodemanager service stopped in datanodes.

[#1]

Nodemanager service stopped in all data nodes of a HA cluster. The services restarted and they came up successfully.

But we could not find when the service stopped from logs (yarn-yarn-nodemanager-<datanode FQQDN>.out or yarn-yarn-nodemanager-<datanode FQQDN>) on the logs to find when the service was stopped.

Is there any way to find when the nodemanager stopped on the nodes.

Thanks,

Sajesh

[#2]

@Sajesh PP - You will get below messages in the logs during the time of shutdown.

2019-03-14 17:10:57,270 INFO impl.MetricsSystemImpl (MetricsSystemImpl.java:shutdown(606)) - NodeManager metrics system shutdown complete.

2019-03-14 17:10:57,274 INFO nodemanager.NodeManager (LogAdapter.java:info(45)) - SHUTDOWN_MSG:

/************************************************************

SHUTDOWN_MSG: Shutting down NodeManager at abc.example.com/xxx.xx.xx.xxx

************************************************************

You need to grep in the same in the NM logs. If you are not finding anything, then you need to check other files created in the NM logs directory.