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enable on-demand metrics for eviction

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This commit is contained in:
David Ashpole
2018-01-08 10:20:02 -08:00
parent 6244ff3644
commit f6721480f4
11 changed files with 48 additions and 35 deletions
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11
pkg/kubelet/server/stats/summary.go
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@@ -25,7 +25,9 @@ import (
)
type SummaryProvider interface {
Get() (*statsapi.Summary, error)
// Get provides a new Summary with the stats from Kubelet,
// and will update some stats if updateStats is true
Get(updateStats bool) (*statsapi.Summary, error)
}
// summaryProviderImpl implements the SummaryProvider interface.
@@ -41,8 +43,7 @@ func NewSummaryProvider(statsProvider StatsProvider) SummaryProvider {
return &summaryProviderImpl{statsProvider}
}
// Get provides a new Summary with the stats from Kubelet.
func (sp *summaryProviderImpl) Get() (*statsapi.Summary, error) {
func (sp *summaryProviderImpl) Get(updateStats bool) (*statsapi.Summary, error) {
// TODO(timstclair): Consider returning a best-effort response if any of
// the following errors occur.
node, err := sp.provider.GetNode()
@@ -50,7 +51,7 @@ func (sp *summaryProviderImpl) Get() (*statsapi.Summary, error) {
return nil, fmt.Errorf("failed to get node info: %v", err)
}
nodeConfig := sp.provider.GetNodeConfig()
rootStats, networkStats, err := sp.provider.GetCgroupStats("/")
rootStats, networkStats, err := sp.provider.GetCgroupStats("/", updateStats)
if err != nil {
return nil, fmt.Errorf("failed to get root cgroup stats: %v", err)
}
@@ -87,7 +88,7 @@ func (sp *summaryProviderImpl) Get() (*statsapi.Summary, error) {
if name == "" {
continue
}
s, _, err := sp.provider.GetCgroupStats(name)
s, _, err := sp.provider.GetCgroupStats(name, false)
if err != nil {
glog.Errorf("Failed to get system container stats for %q: %v", name, err)
continue