Environment- All versions of Clearpass
Answer- GUI :
1) Login to the GUI of the Clearpass Policy Manager
2) Click on the version number at the bottom of the page to get system status as shown below :
You can also get the uptime information using SNMP OID HOST-RESOURCES-MIB::hrSystemUptime.0
Following is an example of SNMP get from an Airwave server :
Note : You need to configure SNMP community string on Clearpass under (Administration > Server Manager > Server Config.