[Investigating] There is a bug that the custom metric graphs are not displayed in the role graphs with more than 30 hosts registered. Until the issue is resolved, please click on the "Show all hosts." button below the graph to view the graph in detail. We apologize for any inconvenience this may cause.
April 16, 2021 7:46AM UTC
[Resolved] Mackerel is working properly now. Sorry for the inconvenience.