Many of the graphs and indicators in the host dashboard are blank. This is caused by a change in the monitoring operator which has relabeled the nodes: instead of having an IP address in the "instance" field of node exporter queries, it now features the node's name
*** Bug 1748785 has been marked as a duplicate of this bug. ***
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/RHBA-2019:2922