feat: add default alertmanagers to silence form #5086
Merged
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This allows setting some default alertmanagers to select when
creating a new alert, overriding the current behavior of getting all
the ones that are not readonly.
This pull request adds a new configuration value under
silenceForm.defaultAlertmanagers
that allows specifying the names of the alertmanagers that will be set by default in the form to create a new silence.For HA clusters of alertmanagers, if any of the members matches the name the whole cluster will be selected.
If it's not set, the behavior does not change.
The case for this came from adding two alertmanagers to our karma instance, but one of them being "specialized" and not really meant for most users to use. And to avoid users creating silences on that one by default, we thought of this change, that will prevent "doing the wrong thing" unless you really want to.