Root.sh:CRS Installation Fails With Error CRS-1726: Process Failed To Run In Real-time Priority (Doc ID 2893761.1)

root.sh failed on node 1 while starting  cssd CRS-2674: Start of 'ora.cssd' on '<HOSTNAME>' failed

root_<HOSTNAME>_2022-08-02 06:31xxxx.log

=====

CRS-2672: Attempting to start 'ora.evmd' on '<HOSTNAME>'
CRS-2672: Attempting to start 'ora.mdnsd' on '<HOSTNAME>'
CRS-2676: Start of 'ora.mdnsd' on '<HOSTNAME>' succeeded
CRS-2676: Start of 'ora.evmd' on '<HOSTNAME>' succeeded
CRS-2672: Attempting to start 'ora.gpnpd' on '<HOSTNAME>'
CRS-2676: Start of 'ora.gpnpd' on '<HOSTNAME>' succeeded
CRS-2672: Attempting to start 'ora.cssdmonitor' on '<HOSTNAME>'
CRS-2672: Attempting to start 'ora.gipcd' on '<HOSTNAME>'
CRS-2676: Start of 'ora.cssdmonitor' on '<HOSTNAME>' succeeded
CRS-2676: Start of 'ora.gipcd' on '<HOSTNAME>' succeeded
CRS-2672: Attempting to start 'ora.cssd' on '<HOSTNAME>'
CRS-2672: Attempting to start 'ora.diskmon' on '<HOSTNAME>'
CRS-2676: Start of 'ora.diskmon' on '<HOSTNAME>' succeeded
CRS-2674: Start of 'ora.cssd' on '<HOSTNAME>' failed
CRS-2679: Attempting to clean 'ora.cssd' on '<HOSTNAME>'
CRS-2681: Clean of 'ora.cssd' on '<HOSTNAME>' succeeded
CRS-2673: Attempting to stop 'ora.gipcd' on '<HOSTNAME>'
CRS-2677: Stop of 'ora.gipcd' on '<HOSTNAME>' succeeded
CRS-2673: Attempting to stop 'ora.cssdmonitor' on '<HOSTNAME>'
CRS-2677: Stop of 'ora.cssdmonitor' on '<HOSTNAME>' succeeded
CRS-2673: Attempting to stop 'ora.gpnpd' on '<HOSTNAME>'
CRS-2677: Stop of 'ora.gpnpd' on '<HOSTNAME>' succeeded
CRS-2673: Attempting to stop 'ora.mdnsd' on '<HOSTNAME>'
CRS-2677: Stop of 'ora.mdnsd' on '<HOSTNAME>' succeeded
CRS-2673: Attempting to stop 'ora.evmd' on '<HOSTNAME>'
CRS-2677: Stop of 'ora.evmd' on '<HOSTNAME>' succeeded
CRS-4000: Command Start failed, or completed with errors.
2022/07/26 18:57:55 CLSRSC-119: Start of the exclusive mode cluster failed
Died at /home/oragrid/product/19c/crs/install/crsinstall.pm line 2439.

alert.log
======
2022-08-02 06:37:52.141 [GPNPD(55441)]CRS-2328: GPNPD started on node ne1-edlitedbn-001.
2022-08-02 06:37:52.113 [CSSDMONITOR(55545)]CRS-8500: Oracle Clusterware CSSDMONITOR process is starting with operating system process ID 55545
2022-08-02 06:37:52.123 [GIPCD(55547)]CRS-8500: Oracle Clusterware GIPCD process is starting with operating system process ID 55547
2022-08-02 06:37:52.163 [CSSDMONITOR(55545)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <ORACLE_BASE>/diag/crs/<HOSTNAME>/crs/trace/ohasd_cssdmonitor_root.trc.
2022-08-02 06:37:53.097 [GIPCD(55547)]CRS-7517: The Oracle Grid Interprocess Communication (GIPC) failed to identify the Fast Node Death Detection (FNDD).
2022-08-02 06:37:54.127 [CSSDAGENT(55597)]CRS-8500: Oracle Clusterware CSSDAGENT process is starting with operating system process ID 55597
2022-08-02 06:37:54.176 [CSSDAGENT(55597)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <ORACLE_BASE>/diag/crs/<HOSTNAME>/crs/trace/ohasd_cssdagent_root.trc.
2022-08-02 06:37:55.352 [OCSSD(55620)]CRS-8500: Oracle Clusterware OCSSD process is starting with operating system process ID 55620
2022-08-02 06:37:56.405 [OCSSD(55620)]CRS-1713: CSSD daemon is started in hub mode
2022-08-02 06:37:56.442 [OCSSD(55620)]CRS-1726: Process failed to run in real-time priority. Details at (:CLSN00143:) in <ORACLE_BASE>/diag/crs/<HOSTNAME>/crs/trace/ocssd.trc. >>>>>>>>>>>>>>>>>>>
2022-08-02 06:37:56.442 [OCSSD(55620)]CRS-1656: The CSS daemon is terminating due to a fatal error; Details at (:CSSSC00011:) in
2022-08-02T06:37:57.455465+00:00
Errors in file <ORACLE_BASE>/diag/crs/<HOSTNAME>/crs/trace/ocssd.trc (incident=9):
CRS-8503 [] [] [] [] [] [] [] [] [] [] [] []
Incident details in: <ORACLE_BASE>/diag/crs/<HOSTNAME>/crs/incident/incdir_9/ocssd_i9.trc

ocssd.trc
=======
2022-08-02 06:37:56.405 : GPNP:1396124288: clsgpnp_Init: [at clsgpnp0.c:831] GPnP pid=55620, cli=clsuGpnpg GPNP comp tracelevel=1, depcomp tracelevel=0, tlsrc:init, apitl:0, tstenv:0, devenv:0, envopt:0, flags=2003
2022-08-02 06:37:56.411 : GPNP:1396124288: clsgpnpkwf_initwfloc: [at clsgpnpkwf.c:404] Using FS Wallet Location : <GI_HOME>/gpnp/<HOSTNAME>/wallets/peer/

2022-08-02 06:37:56.411 : GPNP:1396124288: clsgpnpkwf_initwfloc: [at clsgpnpkwf.c:416] Wallet readable. Path: <GI_HOME>/gpnp/<HOSTNAME>/wallets/peer/

2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] clssscInitGlobalCTX: Environment is production
2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: CSSD process cannot get real-timepriority
2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] clsssc_logose: slos [-2], SLOS depend-msg [No such file or directory], SLOS error-msg [2]
2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] clsssc_logose: SLOS other info is [process is not running in real-time. rc = 0].

2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: set priority system call had failed >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] (:CLSN00143:)clssscInitGlobalCTX: set priority system call had failed calling clssscExit >>>>>>>>>>>>>>>>>>
2022-08-02 06:37:56.442 : CSSD:1396124288: [ INFO] (:CSSSC00011:)clssscExit: A fatal error occurred during initialization
2022-08-02 06:37:56.443 : CSSD:1396124288: [ INFO] clssscagSendNLSToAgent: Sending msg id 1730, size 56, product CRS, facility CRS, to agent >>>>>>>>>>>>>>>>>>
2022-08-02 06:37:57.299 : CSSD:1238218496: [ INFO] clssscagSelect: endpoint(0xda) authenticated with user(root)
2022-08-02 06:37:57.299 : CSSD:1238218496: [ INFO] clssscagProcessInitialMsg: Handshake successful with agent 1
2022-08-02 06:37:57.299 : CSSD:1238218496: [ INFO] clssscagProcAgReq: got a successful connection
2022-08-02 06:37:57.299 : CSSD:1238218496: [ INFO] clssscagProcAgReq: profile not yet initialized

Problematic cluster:

# mount | grep cgroup
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)

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