Services Not Starting Error: "****.service failed: Permission denied"

Applies to:  

Linux OS - Version Oracle Linux 7.0 and later 
Linux x86-64 

  

Symptoms 

Issue started after Leapp upgrade (upgraded server from Oracle Linux 7 to Oracle Linux 8), after that all services were getting failed on startup: 

# systemctl --all --failed 

 UNIT LOAD ACTIVE SUB DESCRIPTION 

 ● dds.mount loaded failed failed /dds 

 ● dds_shared.mount loaded failed failed /dds_shared 

 ● ZFS-backup01-KY_PRD_F1_VMC1.mount loaded failed failed /ZFS/… 

 ● ZFS-backup02-KY_PRD_F1_VMC1.mount loaded failed failed /ZFS/… 

 ● dbcsadmin.service loaded failed failed dbcsadmin.service 

 ● dbcsagent.service loaded failed failed dbcsagent.service 

 ● dbserverd.service loaded failed failed dbserverd 

 ● initdcsdtrs.service loaded failed failed Oracle dtrs service startup