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Non-zero cfs quota period duration requires feature flag

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This commit is contained in:
Karan Goel 2020-09-10 09:34:16 -07:00
parent 88512be213
commit a49760bfce
3 changed files with 22 additions and 4 deletions
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1
pkg/kubelet/apis/config/validation/BUILD
View File

@ -19,6 +19,7 @@ go_library(
"//pkg/kubelet/apis/config:go_default_library",
"//pkg/kubelet/cm/cpuset:go_default_library",
"//pkg/kubelet/types:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/validation:go_default_library",
"//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",

8
pkg/kubelet/apis/config/validation/validation.go
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@ -20,6 +20,7 @@ import (
"fmt"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
utilvalidation "k8s.io/apimachinery/pkg/util/validation"
utilfeature "k8s.io/apiserver/pkg/util/feature"
@ -31,6 +32,10 @@ import (
kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
)
var (
defaultCFSQuota = metav1.Duration{Duration: 100 * time.Millisecond}
)
// ValidateKubeletConfiguration validates `kc` and returns an error if it is invalid
func ValidateKubeletConfiguration(kc *kubeletconfig.KubeletConfiguration) error {
allErrors := []error{}
@ -60,6 +65,9 @@ func ValidateKubeletConfiguration(kc *kubeletconfig.KubeletConfiguration) error
if kc.HealthzPort != 0 && utilvalidation.IsValidPortNum(int(kc.HealthzPort)) != nil {
allErrors = append(allErrors, fmt.Errorf("invalid configuration: HealthzPort (--healthz-port) %v must be between 1 and 65535, inclusive", kc.HealthzPort))
}
if !localFeatureGate.Enabled(features.CPUCFSQuotaPeriod) && kc.CPUCFSQuotaPeriod != defaultCFSQuota {
allErrors = append(allErrors, fmt.Errorf("invalid configuration: CPUCFSQuotaPeriod %v requires feature gate CustomCPUCFSQuotaPeriod", kc.CPUCFSQuotaPeriod))
}
if localFeatureGate.Enabled(features.CPUCFSQuotaPeriod) && utilvalidation.IsInRange(int(kc.CPUCFSQuotaPeriod.Duration), int(1*time.Microsecond), int(time.Second)) != nil {
allErrors = append(allErrors, fmt.Errorf("invalid configuration: CPUCFSQuotaPeriod (--cpu-cfs-quota-period) %v must be between 1usec and 1sec, inclusive", kc.CPUCFSQuotaPeriod))
}

17
pkg/kubelet/apis/config/validation/validation_test.go
View File

@ -52,7 +52,10 @@ func TestValidateKubeletConfiguration(t *testing.T) {
RegistryPullQPS: 5,
HairpinMode: kubeletconfig.PromiscuousBridge,
NodeLeaseDurationSeconds: 1,
CPUCFSQuotaPeriod: metav1.Duration{Duration: 100 * time.Millisecond},
CPUCFSQuotaPeriod: metav1.Duration{Duration: 25 * time.Millisecond},
FeatureGates: map[string]bool{
"CustomCPUCFSQuotaPeriod": true,
},
}
if allErrors := ValidateKubeletConfiguration(successCase1); allErrors != nil {
t.Errorf("expect no errors, got %v", allErrors)
@ -84,8 +87,11 @@ func TestValidateKubeletConfiguration(t *testing.T) {
RegistryPullQPS: 5,
HairpinMode: kubeletconfig.PromiscuousBridge,
NodeLeaseDurationSeconds: 1,
CPUCFSQuotaPeriod: metav1.Duration{Duration: 100 * time.Millisecond},
CPUCFSQuotaPeriod: metav1.Duration{Duration: 50 * time.Millisecond},
ReservedSystemCPUs: "0-3",
FeatureGates: map[string]bool{
"CustomCPUCFSQuotaPeriod": true,
},
}
if allErrors := ValidateKubeletConfiguration(successCase2); allErrors != nil {
t.Errorf("expect no errors, got %v", allErrors)
@ -115,7 +121,7 @@ func TestValidateKubeletConfiguration(t *testing.T) {
RegistryPullQPS: -10,
HairpinMode: "foo",
NodeLeaseDurationSeconds: -1,
CPUCFSQuotaPeriod: metav1.Duration{Duration: 0},
CPUCFSQuotaPeriod: metav1.Duration{Duration: 100 * time.Millisecond},
}
const numErrsErrorCase1 = 25
if allErrors := ValidateKubeletConfiguration(errorCase1); len(allErrors.(utilerrors.Aggregate).Errors()) != numErrsErrorCase1 {
@ -148,8 +154,11 @@ func TestValidateKubeletConfiguration(t *testing.T) {
RegistryPullQPS: 5,
HairpinMode: kubeletconfig.PromiscuousBridge,
NodeLeaseDurationSeconds: 1,
CPUCFSQuotaPeriod: metav1.Duration{Duration: 100 * time.Millisecond},
CPUCFSQuotaPeriod: metav1.Duration{Duration: 50 * time.Millisecond},
ReservedSystemCPUs: "0-3",
FeatureGates: map[string]bool{
"CustomCPUCFSQuotaPeriod": true,
},
}
const numErrsErrorCase2 = 1
if allErrors := ValidateKubeletConfiguration(errorCase2); len(allErrors.(utilerrors.Aggregate).Errors()) != numErrsErrorCase2 {