Was wondering if there is a config / dependency on ensuring all hosts have the graph icon available to hover over for a quick view. (Blue graph Icon)
Also, some of then render when hovering, others not.
Its not host/service specific it seems, as 2 hosts with the same services are configured, the one renders the icon and the other doesn’t (for the same service)
Hope that makes sense.
The icon will be there, if metrics have been recorded. For hosts this is only the case for the CRE, or if you enable the classical ping host check command instead of using the Smart PING in the commercial editions.
If you do not get graphs for all hosts / services of a kind, there can be tons of reasons. A non-working data source, corruption of the graph files, a plugin misbehaving, etc. You would want to start by looking at the Checkmk logs, to see if the application is healthy overall.
