HPA needs metrics for exited init containers before it will
take action. By setting memory and CPU usage to zero for any
containers that cAdvisor didn't provide statistics for, we
are assured that HPA will be able to correctly calculate
pod resource usage.
The trailing for loop removed within this PR can include active and
inactive references. This modification will gauarantee at most only one
reference per container is returned.
GetPodCgroupNameSuffix is not really implemented under darwin
(or windows for that matter). So let's just skip over the check
for CPU and Memory if that is not set.
This PR adds the pod-level metrics for CPU and memory stats. cAdvisor
can get all pod cgroup information so we can add this pod-level CPU and
memory stats information from the corresponding pod cgroup
This PR adds pod-level ephemeral storage metric into Summary API.
Pod-level ephemeral storage usage is the sum of all containers and local
ephemeral volume including EmptyDir (if not backed up by memory or
hugepages), configueMap, and downwardAPI.
