when deploying multiple prometheus instances, for ha purposes, we need to use the --cluster.* options [1] for them to visualize data correctly if a node is down
currently if a node goes down there will be gaps in the monitoring data on that node only
1. https://prometheus.io/docs/alerting/alertmanager/#high-availability
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2020:2231