I had a similar problem today on my newly installed CE version (use subscription edition at work).
I ran the alerter PHP script by hand in debug mode and that pointed me to a problem with my PHP installation and a much smaller related problem with Observium itself.
The alerter script only gives meaningful errors when there is actually an alert to send, which should have been obvious to me.
Mark
From: observium [mailto:observium-bounces@observium.org] On Behalf Of Matt Zillmann
Sent: 22 March 2017 19:24
To: Observium Network Observation System <observium@observium.org>
Subject: [Observium] Alerting and device adding broken after update
Adam,
We have the Subscription edition of Observium and yesterday I upgraded to the latest build. After the build update was completed, I also updated my php version from 5.4.16 to 5.6.30 . After doing this, I am no longer getting email alerts and cannot add new devices. Any idea to what has went wrong here? What next step should I take?
Thank you,
Matt Zillmann
Network Administrator
Office: 216-251-2510
ISO/IEC 17025:2005