I’m afraid you’re trying to mix Session Relevance with Client Relevance, a common source of confusion. Because API queries use Session Relevance (querying the server database), you cannot directly retrieve things from the Client - you have to check the ‘property results’ that the client has previously reported.
To test Session Relevance queries, I like to use the hidden “QNA” page of Web Reports. It behaves similar to the Fixlet Debugger, but runs in Session Relevance context.
Connect to your Web Reports server, and change the end of the URL to /webreports?page=QNA
From there you can use the Introspectors, running a query like
properties of type "bes computer"
to see what’s available.
In Session Relevance, there are a number of built-in properties of a ‘bes computer’; for other things like the Operating System version, the ‘bes computer’ does not provide that directly, you’d have to retrieve that from a BES Property Result.
You can filter the results to find, while you can’t communicate with the ‘client’, you can retrieve the ‘agent version of bes computer’ to get the BigFix client version.
Q: properties whose (it as string contains "version") of type "bes computer"
A: agent version of <bes computer>: string
For the Operating System version, you’d have to find (or create) a Property for that. You can search your list of BES Properties like the following. I use this template often, and if there is a BES Property that is ‘reserved’ then I prefer to use it, as it’s guaranteed to exist in every BigFix deployment:
q: (names of it, reserved flag of it, name of source analysis of it | "Global", name of site of source analysis of it | "Global") of bes properties whose (name of it as lowercase contains "version" and name of it as lowercase contains "os")
A: Sophos Anti-Virus Version, False, Sophos Anti-Virus / Endpoint Security Client Information - 9.x/10.x, Client Manager for Anti-Virus
A: Sophos Anti-Virus Version, False, Sophos Anti-Virus Client Information - 7.x/8.x for Mac, Client Manager for Anti-Virus
A: OS Version Number - Windows, False, Operating System Information (Windows), BES Inventory and License
A: Adobe Photoshop Version, False, ( (Deprecated) Adobe Product Detection (Windows) ), BES Inventory and License
A: Adobe Photoshop Elements Version, False, ( (Deprecated) Adobe Product Detection (Windows) ), BES Inventory and License
A: Kernel version / OS Release - Unix, False, Operating System Information (UNIX), BES Inventory and License
A: Installed Applications - Versions - Mac OS X, False, Application Information (Mac OS X), BES Inventory and License
A: CentOS Download Plug-in Version, False, Download Plug-in Versions, Patching Support
A: CentOS R2 Download Plug-in Version, False, Download Plug-in Versions, Patching Support
A: Release Version - Microsoft Windows Malicious Software Removal Tool, False, Windows Security: Microsoft Windows Malicious Software Removal Tool - Configuration Information, Patching Support
A: OSD Version, False, Bundle Creator Machine Information, OS Deployment and Bare Metal Imaging
A: OS Version, False, Bundle Creator Machine Information, OS Deployment and Bare Metal Imaging
A: OS Version, False, Hardware Attributes, BigFix ServiceNow Data Flow
I did not find a built-in OS Version property. I did find versions that are specific to Windows or to Linux or to other operating systems, which come from separate Analyses; it would be inconvenient to try to query the multiple properties, so I’d recommend creating a new Custom Property in your deployment to retrieve the OS version, and use that to retrieve results.
While we’re on the topic, how you structure the relevance query will have a huge impact on its performance. If it’s crafted in a way where very computer triggers a new BES Property lookup, that can be a huge performance hit, so I’ll refer here to the authority on efficiently retrieving BES Computer Property Results:
With that, we could try a query such as the following (you’ll still need to do the XML encoding on it)
(
name of item 0 of it|"missing Name"
, operating system of item 0 of it | "missing OS"
, (if (size of item 1 of it = 1) then ((if it = "" then "OS Version: No values" else it) of concatenation ";" of values of results (item 0 of it, elements of item 1 of it)) else (if (size of item 1 of it > 1) then (("OS Version duplicates: " & concatenation "|" of ((name of it) & "=" & (id of it as string)) of elements of item 1 of it) as string) else ("OS Version Property does not exist")))
, agent version of item 0 of it
) of (
elements of item 0 of it /*expand the computer set - gets you one line per computer*/
,item 1 of it
) of (
member set of bes computer group whose (name of it = "TC - MQFT Servers")
, set of bes properties whose (name of it as lowercase = ("OS Version") as lowercase) /*you need to create the custom "OS Version" property*/
)
Edit: fixed the query for ‘operating system of item 0 of it’