github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-09-17 07:03:31 +00:00
Code Issues Projects Releases Wiki Activity

Add config checking for inflight limits

Browse Source 
When API Priority and Fairness is enabled, the inflight limits must
add up to something positive.
This rejects the configuration that prompted
https://github.com/kubernetes/kubernetes/issues/102885

Update help for max inflight flags
This commit is contained in:
Mike Spreitzer
2021-06-21 16:53:07 -04:00
parent ce8b7afc8a
commit 0762f492c5
3 changed files with 21 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
cmd/kube-apiserver/app/server.go
View File

@@ -466,10 +466,11 @@ func buildGenericConfig(
pluginInitializers...)
if err != nil {
lastErr = fmt.Errorf("failed to initialize admission: %v", err)
return
}
if utilfeature.DefaultFeatureGate.Enabled(genericfeatures.APIPriorityAndFairness) && s.GenericServerRunOptions.EnablePriorityAndFairness {
genericConfig.FlowControl = BuildPriorityAndFairness(s, clientgoExternalClient, versionedInformers)
genericConfig.FlowControl, lastErr = BuildPriorityAndFairness(s, clientgoExternalClient, versionedInformers)
}
return
@@ -491,13 +492,16 @@ func BuildAuthorizer(s *options.ServerRunOptions, EgressSelector *egressselector
}
// BuildPriorityAndFairness constructs the guts of the API Priority and Fairness filter
func BuildPriorityAndFairness(s *options.ServerRunOptions, extclient clientgoclientset.Interface, versionedInformer clientgoinformers.SharedInformerFactory) utilflowcontrol.Interface {
func BuildPriorityAndFairness(s *options.ServerRunOptions, extclient clientgoclientset.Interface, versionedInformer clientgoinformers.SharedInformerFactory) (utilflowcontrol.Interface, error) {
if s.GenericServerRunOptions.MaxRequestsInFlight+s.GenericServerRunOptions.MaxMutatingRequestsInFlight <= 0 {
return nil, fmt.Errorf("invalid configuration: MaxRequestsInFlight=%d and MaxMutatingRequestsInFlight=%d; they must add up to something positive", s.GenericServerRunOptions.MaxRequestsInFlight, s.GenericServerRunOptions.MaxMutatingRequestsInFlight)
}
return utilflowcontrol.New(
versionedInformer,
extclient.FlowcontrolV1beta1(),
s.GenericServerRunOptions.MaxRequestsInFlight+s.GenericServerRunOptions.MaxMutatingRequestsInFlight,
s.GenericServerRunOptions.RequestTimeout/4,
)
), nil
}
// completedServerRunOptions is a private wrapper that enforces a call of Complete() before Run can be invoked.