Feature request: Internal Sensu, etcd and Postgres monitoring, and alert integration about catalog HOT 5 OPEN

What documentation do we have around monitoring sensu with sensu?

from catalog.

Working on requirements.

We have documented monitoring sensu with sensu, using /health.
https://docs.sensu.io/sensu-go/latest/operations/monitor-sensu/monitor-sensu-with-sensu/

CE stated that there is a gap in regards to monitoring etcd, we need one or more key metrics to monitor.

from catalog.

We will need a big disclaimer that a sensu cluster cannot monitoring itself, it needs a partner (another cluster).

from catalog.

@jhenderson-pro please add customer etcd issue context.

from catalog.

Initially, a customer had an issue with unbounded etcd growth (internal ref in the CE priority queue). This had a significant impact on Sensu's health. This feature is requested to facilitate simpler configuring of monitoring and alerts for critical Sensu components in an integration with the goal of some warning before the environment becomes unresponsive.
Initially, internal or external etcd, Postgres, and the backends. Etcd disk quotas are a common support request and may be good to include in an integration.

from catalog.