3730777 - Failover occurred from Primary to Secondary with signal 9(killed) in pacemaker logs

Failover happened from Primary to secondary site and below are the observed traces:

/var/log messages

2026-03-20T10:07:33.095649-05:00 xxx pacemaker-controld[50638]:  error: Connection to pengine IPC failed
2026-03-20T10:07:33.095699-05:00 xxx pacemaker-controld[50638]:  error: Connection to pengine closed 
2026-03-20T10:07:33.097227-05:00 xxx pacemakerd[50625]:  warning: pacemaker-schedulerd[50637] terminated with signal 9 (Killed)
2026-03-20T10:07:33.097267-05:00 xxx pacemakerd[50625]:  notice: Respawning pacemaker-schedulerd subdaemon after unexpected exit

2026-03-20T10:07:41.604135-05:00 xxx  sudo:   mdpadm : PWD=/hana/shared/MDP/HDB00/xxx; USER=root ; COMMAND=/usr/sbin/crm_attribute -n hana_mdp_site_srHook_AzNode1mdp -v SFAIL -t crm_config -s SAPHanaSR

nameserver_xxx.30001.003.trc

[946482]{-1}[-1/-1] 2026-03-20 10:07:41.564109 i sr_dataaccess    DisasterRecoveryPrimaryImpl.cpp(01129) : Replication session closed (site=2, remoteHost=172.xx.xx.xxx, invalidateSession=0, eventReported=0) <<, ptr=0x00ffff676982f080

[1057200]{-1}[-1/-1] 2026-03-20 10:07:41.575712 i ha_dr_SAPHanaSR  SAPHanaSR.py(00054) : SAPHanaSR SAPHanaSR.srConnectionChanged mySystemStatus=11 mySID=xxx myInSync=False myReason=
[1057200]{-1}[-1/-1] 2026-03-20 10:07:41.645046 i ha_dr_SAPHanaSR  SAPHanaSR.py(00074) : SAPHanaSR.srConnectionChanged() CALLING CRM: <sudo /usr/sbin/crm_attribute -n hana_mdp_site_srHook_AzNode1mdp -v SFAIL -t crm_config -s SAPHanaSR> rc=0

[1010642]{-1}[-1/-1] 2026-03-20 10:07:44.134619 i sr_nameserver    DRRequestHandler.cpp(04234) : Context of dr_unregisterdatacenter request: secondary takeover
[1057418]{-1}[-1/-1] 2026-03-20 10:07:44.134731 i ha_provider      PythonProxyImpl.cpp(01298) : calling HA/DR provider SAPHanaSR.hookDRSecondaryUnregistered(siteName=xxx, siteId=2, reason=takeover)

SAP HANA PLATFORM EDITION 2.0

SAP HANA SYSYEM REPLICATION

Replication, cluster, pacemaker, failover, takeover, signal 9 , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) , BC-OP-LNX , Linux , Problem