You have to get the REST API (legacy) url from victor ops settings.  Its confusing I know, I literally just got this setup my self

From: observium [mailto:observium-bounces@observium.org] On Behalf Of Bill Long
Sent: Thursday, February 2, 2017 4:14 PM
To: observium@observium.org
Subject: [Observium] New to subscription

Notice: This email came from outside FEC Railway

Observium,

I am a new subscriber to Observium, though I have been using the CE version for about a year and a half. I was reading in the documentation that I could configure alerting via VictorOps, but I cannot seem to find where I have to setup the configuration (the menu selections are not where the screen snap in the documentation shows it to be).. Any help would be greatly appreciated..

--Bill

I am using the following setup:

Observium 17.1.8318 (12th January 2017)

OS Linux 3.10.0-327.el7.x86_64 [amd64] (CentOS 7.3.1611)

Apache 2.4.6 (CentOS) PHP/7.0.15

PHP 7.0.15 (OPcache: ENABLED)

Python 2.7.5

MySQL 5.5.52-MariaDB (extension: mysqli 5.5.52-MariaDB)

SNMP NET-SNMP 5.7.2

RRDtool 1.6.0