Alert for syslog

[asarolkar]

I am trying to set an alert that notifies the admin of a situation when we dont get any data from syslog (no messages on udp:514) :

Alerts based on the following searches seem to be failing:

index=_internal (source=*/metrics.log* OR source=*\\metrics.log*) group=per_sourcetype_thruput series=syslog | eval flag= if(isnull(kb) OR len(kb)<=1,"Y","N") | table flag | search flag="Y"

sourcetype=syslog | timechart count span=1d | search count=0

Neither seems to be working out (there is no data written to that sourcetype which clearly one of the two ought to capture)

Any other/ideas suggestions ? I do not want to use deployment monitor (unless IN deployment monitor, there happens to be a way to configure an alert when it sees a missing sourcetype/no data from sourcetype ) ?

[hjwang · Accepted solution]

I think you can use a simple way to do this by searching source=udp:514

then set alert condition when number of events equals zero