Problem
Nagios reports false errors for multiple servers. I.e. all servers might report the disk check for /var but digging the /var on all servers is fine.
Solution
The “Use NRPE” has not been set on the check in question. To set, use the udm command:
root@ucs:~# udm nagios/service modify --dn "cn=UNIVENTION_DISK_VAR,cn=nagios,dc=multi,dc=ucs" --set useNRPE=1
Object modified: cn=UNIVENTION_DISK_VAR,cn=nagios,dc=multi,dc=ucs