How to suspend all alerts temporarily?

personally I like Alert Manager -> Active Alerts -> Disable all alert actions

This will disable alert actions, but still allow the alerts to appear in the console during the maintenance.

[this is an obscure checkbox in the upper right corner of that screen]

Otherwise, yes, stopping the Alert engine service will do it.

I'd say the cleanest way will be to unmanage the affected nodes for planned maintenance window. Wouldn't it work for you?

Wow - totally missed that little check box on the top right of the Active Alert window - thank you. Going to try this out and see how it works.

It would work, and I normally do that for small outages/maintenance events, but there are so many nodes that will be affected during this window, the above method should result in a lot less work.

I like this approach as well very much

TIPS & TRICKS: Stop the madness! Avoiding alerts but continuing to pull statistics.

Over three years on this is still the most useful thing I've read on Thwack!

In version 12 it changed slightly in the active alerts screen still but use the dropdown, it's now a tick box named 'pause actions of all alerts"