index=pan* dvc_name="*" sourcetype="pan:traffic" OR sourcetype="pan:system"
how can I trigger an email alert if example 1 or multiple devices are not sending traffic logs after 24hrs. I tried using the alert with condition number of results but it's not sending logs. because splunk counts the result not by device and by logs it added all the results.
You must have a list to which you can compare your search results (for example - stored in a lookup, or generated from results from the day before).
Splunk cannot tell you what is not in the results.
try this
index=pan* dvc_name="*" sourcetype="pan:traffic" OR sourcetype="pan:system" | stats count by dvc_name | where count=0
in the alert condition select if number of results>0