(As you probably guessed, Heimdall is the name of the Icinga server)
Had a read through the module docs and the GitHub issues but could not find anything that relates.
Does it ring a bell with anyone? I suspect something stupid like a missing PHP module…
There are a couple different graphite modules, the official one and a third-party one that predated it. Can you verify where you got and installed this from?
Setting the charset of the Icinga core IDO resource to latin1 partially solved the issue.
Now under the Graphite page I have all graphs, as well as on the services details. On the host details page the graph zone has disappeared entirely.
How many hosts do you have? Graphite likes to lose metrics sometimes depending on how it’s configured. If you can find the associated .wsp file or an entry in Graphite’s own web portal for a host not displaying a graph in Icinga, something weird is going on.
Never realized it could bug out based on character encoding in IDO, that’s interesting.