Having the alert code say "Was device X online?" if false ->stop is bullshit magic?
Pretty much any other monitoring platform has the ability for parent/child relationships.
*Spencer Ryan* | Senior Systems Administrator | sryan@arbor.net *Arbor Networks* +1.734.794.5033 (d) | +1.734.846.2053 (m) www.arbornetworks.com
On Fri, May 20, 2016 at 5:51 PM, Spencer Ryan sryan@arbor.net wrote:
Just like everything with the poller it would be a consistent 5 minutes.
I think more of my colleagues here would trade a slight delay in alerting for not getting tens/hundreds of alerts when a site drops offline.
You don't need to get fancy, if the device was offline when it was polled, treat it offline for that cycle. If it's up, it's up.
*Spencer Ryan* | Senior Systems Administrator | sryan@arbor.net *Arbor Networks* +1.734.794.5033 (d) | +1.734.846.2053 (m) www.arbornetworks.com
On Fri, May 20, 2016 at 5:48 PM, Adam Armstrong adama@memetic.org wrote:
What, and delay alerts by a possible 5 minutes?
I know many if our users would hunt you down and stab you in the face for making such a suggestion.
And his do you know that the upstream device which was up at the start of the poller run is still up at the end?
Messing with poller order is a bad idea.
Adam.
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On 20 May 2016, at 20:48, Spencer Ryan sryan@arbor.net wrote:
Do the alerts get generated as each device polls? Just run the alerter when all pollers complete and take the parent device into account? On May 20, 2016 3:44 PM, "Tom Laermans" tom.laermans@powersource.cx wrote:
.. or instilling intelligence into the poller to run polls based on "top level" (least amount of parent devices in tree) ... which is not impossible but definitely fiddly :-)
On 20/05/2016 21:42, Adam Armstrong wrote:
This is fiddly due to the way our poller runs as separated processes. You'd not be able to reliably suppress alerts this way, without also delaying them by up to 5 minutes.
Adam.
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On 20 May 2016, at 19:07, Spencer Ryan sryan@arbor.net wrote:
I've asked about this before but how hard would it be for you guys to implement alert dependencies?
The easiest way I can think of doing it would be to simply let us set a "parent" device for anything, and if that device is offline don't send any alerts for downstream devices.
For example we have a testlab that has no UPS/Generator power that we monitor about 200 devices, when the building loses power we get those 200 alarms about devices being offline, when in reality there is a single 6500 as the gateway, and if that switch is offline, i know the rest will be.
We don't want to disable the offline alarms because we do want to know when individual devices drop out.
Thanks!
- Spencer Ryan* | Senior Systems Administrator | sryan@arbor.net
sryan@arbor.net *Arbor Networks* +1.734.794.5033 (d) | +1.734.846.2053 (m) http://www.arbornetworks.com/www.arbornetworks.com
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