Docker really isn’t all that easy. If you want all defaults, it’s dandy. If you want customize anything (e.g. save log files or configure it), then it’s not. Grafana has some sort of strange user/permission thing going on. Sorted.
The pretty picture is the Stack OS metrics dashboard (gathered by node_exporter, collected by Prometheus, and displayed in Grafana). Nothing is happening, so the low CPU is expected, but what’s up with memory? These are 8 GB machines and I don’t even have Cassandra running, yet.
Even better: It’s not bed time!