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Create an Alert for a Custom Node Poller Value change

Hi All,

I am having trouble figuring out how to set up an alert of a Numeric Value change from a Custom Node Poller.

We have six APC Automatic Transfer Switches that I am monitoring which provide redundant power to single-power-supply devices. For more detail, one of the pollers looks at which power source an ATS is currently using (A or . It returns a Numeric Value of 1 for A and 2 for B, which I have mapped to 1="Source A" and 2="Source B". I have the pollers set up and working, but I can't figure out how to alert on a Numeric Value Change.

Now, to complicate things a bit, not all six ATS devices are set to the same default source. Some are default to Source A and some are default to Source B. So, some ATS devices will normally return a value of "1" and some will normally return a value of "2". I was hoping to create one alert so that any time any ATS device switched to the non-default source, it would alert. However, I see no way to alert on a Numeric Value change, only on absolute values.

Do I need to create two separate alerts, one for each default source type, so that the devices that are default on Source A have a separate alert from those that are default on Source B?

Thanks!

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saw10

I seem to remember that there is a way to when creating a custom poller alert to compare the previous and current polled results.

sum_giais

There's ways to do this in SWQL or SQL if needed, but what may work is configuring the UnDP to count as a difference and set the UnDP warning threshold to be if not equal to 0. I don't have something to test this but in theory it sounds awesome.

Hope this helps, and good luck!

tdhaslett

@sum_giaisHow do I set the poller to count as a difference. I can't find anything like that it the setup.

tdhaslett

@saw10I swear I remember that also, but I can't figure out how it is done. I am assuming it requires keeping historical data.

garystorr

Hi,

I have a very similar issue, did you ever rfind a way to alert on changes to Custom Node Poller values?

Thanks

Mikeclark

You would want to identify which poller the alert applies to by putting it in the scope of the alert using the Unique Name field