Created attachment 1477175 [details]
Cluster with Health showing 0.3 instead of a valid value

Description of problem:

If a cluster's health has changed over time, zooming out about 10 times in Grafana Cluster Dashboard leads to the Health panel showing a number (0.3, 0.08 etc) instead of a valid value (Healthy, Unhealthy etc).


Version-Release number of selected component (if applicable):
 
tendrl-monitoring-integration-1.6.3-10.el7rhgs.noarch

tendrl-api-1.6.3-5.el7rhgs.noarch
tendrl-ansible-1.6.3-7.el7rhgs.noarch
tendrl-commons-1.6.3-12.el7rhgs.noarch
tendrl-node-agent-1.6.3-10.el7rhgs.noarch
tendrl-ui-1.6.3-11.el7rhgs.noarch
tendrl-grafana-selinux-1.5.4-2.el7rhgs.noarch
tendrl-notifier-1.6.3-4.el7rhgs.noarch
tendrl-selinux-1.5.4-2.el7rhgs.noarch
tendrl-api-httpd-1.6.3-5.el7rhgs.noarch
tendrl-grafana-plugins-1.6.3-10.el7rhgs.noarch


How reproducible:

3/3


Steps to Reproduce:

1. Import a cluster
2. Make the cluster change its health state (shut down the nodes or something similar)
3. Go to Grafana Cluster dashboard
4. Zoom out 10+ times


Actual results:

Health panel shows a number (a decimal fraction in the examples I've seen) instead of an understandable Health state.


Expected results:

Health panel shows an understandable Health state.