Recently installed OM Essentials 1.2 and upgraded a number of machines to 7.2 (where applicable). Have found several systems where either the inventory and / or status are incomplete. I've made sure that all the relevant 'srvadmin' files are up to date, SNMP is running and there are no firewall issues (iptables) (that I can find).
Clearly I've missed a step somewhere as I have numerous other systems that have all reported successfully. Not sure where the issue(s) are.
All running CentOS 6.x (64 bit) or RHEL 5.x.
Dell PE29xx or R720