There are two different classes of devices. The routers all have power supplies marked as PEM N where N can be anything from 0 through 6. The switches have Power Supplies with indicators as Power Supply N @ something as shown below. I was hoping to create a single checker that worked for both. Regardless, I still have the problem where the currently down status indicator PEM 0 does not seem to be matching either.

Here's the status indicators from one of our switches regn-sw1. There are more examples like this for other devices as well.

On Mar 18, 2024, at 07:46, Adam Armstrong via observium <observium@lists.observium.org> wrote:
This device doesn't seem to have any status entities matching "Power Supply *" at all, though?

adam.

David Milton via observium wrote on 2024-03-18 12:40:
And the top screenshot is referring to the device sktn; our Saskatoon router.
On Mar 18, 2024, at 07:38, David Milton <david@dmilton.ca> wrote:
Sorry Adam, I put the conditions and associations in words it the beginning of my email. Here's a screen shot:
<association-ruleset.png>
On Mar 17, 2024, at 16:10, Adam Armstrong via observium <observium@lists.observium.org> wrote:
It's not really clear what the problem is, since the screenshots don't actually show anything wrong, and you've not screenshotted the actual alert associations, which would be the important part.

I have no idea what device the top screenshot is referring to, since it's not included and you've not said.

adam.

David Milton via observium wrote on 2024-03-17 20:47:
Hello,

I'm attempting to create an alert checker for our router and switch power supplies. I seem to be part way there but am seeing some unexpected behaviour that I cannot explain.

I started with the test condition:
sensor_event notequals ok
and the associations are "or:"
Sensor Description match PEM*
Sensor Description match Power Supply 0 @*
Sensor Description match Power Supply 1 @*

Here's a specific device inventory showing PEM 0 status is currently down:
It seems the last two associations don't mach anything and for some reason the PEM* association only matches the power supplies that are ok, not the one I want the alert for which is currently down. I've tried to match against "Power Supply" and that matches power supplies in my servers but they don't seem to have a status, more like a current sensor instead. I'm attempting to deal strictly with the power supplies in our Juniper routers and switches and from what I can tell they all have a status/sensor_event state.
I think the two "Power Supply 0 @*" associations should also match additional power supplies as shown in the list below taken from the hardware inventory and filtering for a description of Power Supply:
Clearly I'm missing something en the alert checker associations but I'll be darned if I can figure out what that is. I've tried to match on MIB as well but nothing seems to match those power supplies.

What am I missing here?

Thanks,
 Dave.
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