A brief video outlining how to monitor the HTTP Poller using SevOne.
In this video we're going to discuss how to use the HTTP Poller. First start by going to the device manager page and editing an existing device. Now the thing about the HTTP Poller is that it is actually somewhat divorced from the actual device you are editing. You perfectly well could monitor the availability of a website and tie that object we are about to create to a web server. It get a lamp stack and this particular webpage that you are serving up on that server. You want to tie the HTTP Poller data to that device but alternatively you can house all of your HTTP test within a single device. I could test the response time and availability of howto.SevOne.com, Google.com, Yahoo.com, many other websites and tie them all to the same device.
To do this you want to toggle to the HTTP Poller. Make sure it's enabled and edit the monitoring information. Next we need to create an HTTP object. Just select the menu icon on the top left of the able, create new, fill in the appropriate information, decide whether you want to test with downloading the images or not and then check for error codes, assigning severity to different ranges, 300 error, 400 critical, maybe 500 to get an alert. Then you can decide whether you want this to clear out as soon as the system receives a 200 response code from this test. I'll check that and then we can also validate the existence or absence of various strings of text.
Since I built the training portal SevOne video training exist in the HTML page, at least a valid HTML page that is returned by howto.sevone.com. It must match and you can use regular digressions here but I am just going to a very simple string matching here and say that if it does not have that, that's really bad and I save this object and we've created a new HTTP synthetic test that I've logically tied to the monitoring platform itself. Again I could have tied it to the web server that is actually serving up this website internally.
A lot of different options but if I wanted to I could just as easily create another object for a completely different website that is logically tied to the same device and the benefit of that is depending on how you've setup user roles or how you are using the alerts console within SevOne will kind of determine how you actually house this HTTP test within the system. Don't forget to save the changes and once the device is rediscovered, the new objects and the test that come with them should be available to you.
In addition to these videos, remember that the Data Appliance NMS User Manual is available through the NMS UI as shown below. Clicking on the question mark at the top right of any page will automatically bring you to the section of the manual that corresponds to the page you are currently on.