All Disk I/O Metrics Missing on EL8
I recently deployed a number of CentOS 8 machines and noticed that PMM 1 seems to have no disk I/O metrics for any of my EL8 machines. It is completely consistent, all of my EL7 machines have disk I/O metrics in the relevant PMM section, and none of my EL8 machines being monitored by PMM have any disk I/O metrics showing. Is this a known bug? Is there a workaround or a fix? I am using the latest version of both PMM server and client (1.17.3).