Metrics problem on osx platform

[Emmenemoi]

ContainerMetricUtils.getContainerProcessCpuLoad relies on cgroup which is not available on osx platform (docker osx as well then). MetricsReporter won't work then on osx (as development platform for example).

[kyguy]

Hey @Emmenemoi, this should only be a problem when setting cruise.control.metrics.reporter.kubernetes.mode to true. It's also worth noting that cruise.control.metrics.reporter.kubernetes.mode should only be set to true when using an older java versions which do not have this patch [1]. Otherwise, it is safe to run Cruise Control in container environments withcruise.control.metrics.reporter.kubernetes.mode set to false. Check out this issue [2] for more details!

[1] https://bugs.openjdk.java.net/browse/JDK-8226575 [2] https://github.com/linkedin/cruise-control/issues/1747