I have the status of a particular application being reported as string over SNMP.
When everything is working as expected, that monitoring reports an empty string and when some of the data sources have problems, it reports back an string with the names of the affected data sources.
I want to display that string as an alert/info on Zenoss' event console whenever it is not empty.
The problem is that whenever I add a Data Source of type SNMP to a Monitoring Template, it assumes numeric value.
The idea was to use a StatusThreshold just to see when the value changes.
Having that setup results in no events appearing at the Event Console.
From my understanding, the thresholds are evaluated against the value in the RRD database, which is numeric only, so the string gets consistently turned into 'NaN'.
The Zenoss' Monitoring Templates interface doesn't show an intuitive way to deal with strings. How can that be done?