I've got several systems that I have recently started collecting data on via Metricbeat, and am running into an issue on several of them. Particularly, I have a couple of systems that are not reporting back system.process.cgroup.memory but I cannot figure out why. I know I've met the criteria for cgroup data to be collected, and I cannot find an immediate OS-level difference between those working and those not working.
Any thoughts on what I can look at next? OS is Ubuntu 18.04 and Metricbeat version is 7.10.1.