Multiple services are killed with SIGKILL (signal 9) at once on multiple servers running ds_agent

Issue

• Many services are stopped automatically on the Hadoop cluster nodes due to this Application got impacted. need to know the reason why the services are stopped.

  Apr 08 16:50:02 node0 systemd[1]: lvm2-lvmetad.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: rpcbind.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: irqbalance.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: rngd.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: libstoragemgmt.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: crond.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: dbus.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: vmtoolsd.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: sshd.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: dnsmasq.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: rhsmcertd.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: ndtask.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: mgsusageag.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: postfix.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:02 node0 systemd[1]: systemd-journald.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:03 node0 systemd[1]: ngoelastic.service: main process exited, code=killed, status=9/KILL
  Apr 08 16:50:03 node0 systemd[1]: elasticsearch.service: main process exited, code=killed, status=9/KILL