Server in IBM cluster node reboot with message hatsd[xxxx]: hadms: Shutting down the machine. Sync=0 reboot=1

Issue

• Server reboot with following messages in system log file.
  Eg:

node1 cthags[4600]: (Recorded using libct_ffdc.a cv 2):::Error ID: 825....ibHLH/EyE.DuhHt....................:::Reference ID:  :::Template ID: 0:::Details File:  :::Location: RSCT,SRCSocket.C,1.78,482                     :::GS_STOP_ST Group Services daemon stopped DIAGNOSTIC EXPLANATION Received signal[SIGTERM]. Converted to normal stop 
node1 RMCdaemon[3803]: (Recorded using libct_ffdc.a cv 2):::Error ID: 824....ibHLH/rLG.DuhHt....................:::Reference ID:  :::Template ID: 0:::Details File:  :::Location: RSCT,rmcd.c,1.75,837                          :::RMCD_INFO_1_ST The daemon is stopped. Number of command that stopped the daemon 3 
node1 ConfigRM[3835]: (Recorded using libct_ffdc.a cv 2):::Error ID: :::Reference ID:  :::Template ID: 0:::Details File:  :::Location: RSCT,ConfigRMDaemon.C,1.16,204                :::CONFIGRM_STOPPED_ST IBM.ConfigRM daemon has been stopped. 
node1 StorageRM[5618]: (Recorded using libct_ffdc.a cv 2):::Error ID: :::Reference ID:  :::Template ID: 0:::Details File:  :::Location: RSCT,StorageRMDaemon.C,1.56,361               :::STORAGERM_STOPPED_ST IBM.StorageRM daemon has been stopped. 
node1 ctcasd[4437]: (Recorded using libct_ffdc.a cv 2):::Error ID: 824....ibHLH/tPR.DuhHt....................:::Reference ID:  :::Template ID: cffb2385:::Details File:  :::Location: rsct.core.sec,ctcas_main.c,1.30,399           :::ctcasd Daemon Stopped
node1 hatsd[4461]: hadms: Shutting down the machine. Sync=0, reboot=1. 
node1 kernel: md: stopping all md devices.
node1 kernel: ACPI: PCI interrupt for device 0000:02:03.0 disabled
node1 kernel: ACPI: PCI interrupt for device 0000:02:02.0 disabled
node1 kernel: ACPI: PCI interrupt for device 0000:02:00.0 disabled
node1 syslogd 1.4.1: restart.
node1 kernel: klogd 1.4.1, log source = /proc/kmsg started.