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Correct comment around which integrations require cadvisor_stats

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This commit is part of a larger effort to clean up references to `rkt`
in the kubelet.

Previously, this comment hard-coded which integrations required
the cadvisor stats provider. The comment has grown stale
(i.e. referenced rkt and did not reference cri-o).

Update the comment to instead point to the code which determines which
integrations need the cadvisor stats provider.
This commit is contained in:
mattjmcnaughton
2020-01-05 09:21:04 -05:00
parent f5034a6e4a
commit 06b44c76fd
2 changed files with 5 additions and 3 deletions
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2
pkg/kubelet/cadvisor/util.go
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@@ -70,7 +70,7 @@ func EphemeralStorageCapacityFromFsInfo(info cadvisorapi2.FsInfo) v1.ResourceLis
// CRI integrations should get container metrics via CRI. Docker
// uses the built-in cadvisor to gather such metrics on Linux for
// historical reasons.
// cri-o relies on cadvisor as a temporary workaround. The code should
// TODO: cri-o relies on cadvisor as a temporary workaround. The code should
// be removed. Related issue:
// https://github.com/kubernetes/kubernetes/issues/51798
func UsingLegacyCadvisorStats(runtime, runtimeEndpoint string) bool {

6
pkg/kubelet/stats/cadvisor_stats_provider.go
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@@ -38,8 +38,10 @@ import (
)
// cadvisorStatsProvider implements the containerStatsProvider interface by
// getting the container stats from cAdvisor. This is needed by docker and rkt
// integrations since they do not provide stats from CRI.
// getting the container stats from cAdvisor. This is needed by
// integrations which do not provide stats from CRI. See
// `pkg/kubelet/cadvisor/util.go#UsingLegacyCadvisorStats` for the logic for
// determining which integrations do not provide stats from CRI.
type cadvisorStatsProvider struct {
// cadvisor is used to get the stats of the cgroup for the containers that
// are managed by pods.