How can I get the list of assets which OS it will be EOL in the close future (ex. in 6 month)?
I don't think Qualys will report on this until the asset actually has an EOL OS. Otherwise it would be speculation. Vendors have moved out their EOL dates many time in the past so reporting on "Possible EOL" wouldn't do much good.
You can always reports on operating systems and then perform your own speculation of actual EOL date.
a quick way to get all of your detailed OS descriptions is to search for all types of vulns:
and then group by "Operating Systems".
I found it. This is possible in Asset Inventory...
operatingSystem.lifecycle.eol:[now ... now+6M]
Retrieving data ...