Hi, sorry for the delayed response.

First of all, the Wikitech section you found is about the wikiprod
Grafana instance at https://grafana.wikimedia.org. The WMCS Grafana
instance (https://grafana.wmcloud.org) only queries data from various
Prometheus instances, so for those we use Prometheus and
prometheus-alertmanager directly instead of adding yet another component
to the alerting stack.

So, yes, it is possible to configure e-mail or IRC alerts from the
Prometheus metrics we collect from all Cloud VPS instances.[0] The bad
news is that there's no self-service user interface for it yet, so you
would need to ask a Cloud VPS admin to do any changes manually. It's not
really documented anywhere yet, except this tiny section[1] which is
aimed at admins who have direct access to the project.

I'm happy to do the changes if you have a Prometheus query to alert on
written already, just create a task in the #Cloud-VPS project and tag me
(@taavi) on it.

[0]: https://prometheus.wmcloud.org/
[1]:
https://wikitech.wikimedia.org/wiki/Portal:Cloud_VPS/Admin/Monitoring#Monitoring_for_Cloud_VPS

Taavi
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