I am having a strange issue with a fresh install of NABox 2.2 , we installed the appliance and configured it to talk to one of our C-Mode clusters and all was working well for half the day, all the dashboards working as expected. After about 5 hours the LUN and Volume dashboards no longer show any metrics, the highlights just show "N/A ms" across all metrics and all graphis show "No Datapoints" . I am very new to this so would appriciate some guidance on what logs to check to troubleshoot.
Following up on that issue for our fellow members.
Some dashboard are not meant to be used with a lot of performance objects in the graphite database.
For example, when the Volume: detail dashboard is brought up, it will query Graphite with all your volume names in the HTTP request, this will break at some point.
The easiest thing to do to avoid that issue is to restrict the number of objects by selecting only a few volumes you're interested in.
Another option is to modify the dashboard template and place a custom value for "All", there is a settings for that in the settings for the dashboard template value. The custom value should be "*" to have the same behavior for the dashboard.
You might then experience slowness if really there is a lot of volume but it shouldn't fail.