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PodSecurity: optimize evaluation of fully-privileged namespaces

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benchmark                                                           old ns/op     new ns/op     delta
BenchmarkVerifyPod/enforce-implicit_pod-12                          2658          370           -86.07%
BenchmarkVerifyPod/enforce-implicit_deployment-12                   2462          408           -83.42%
BenchmarkVerifyPod/enforce-privileged_pod-12                        2346          420           -82.11%
BenchmarkVerifyPod/enforce-privileged_deployment-12                 2318          426           -81.64%
BenchmarkVerifyPod/enforce-baseline_pod-12                          3606          4259          +18.11%
BenchmarkVerifyPod/enforce-baseline_deployment-12                   2032          341           -83.22%
BenchmarkVerifyPod/enforce-restricted_pod-12                        3522          3322          -5.68%
BenchmarkVerifyPod/enforce-restricted_deployment-12                 1893          327           -82.70%
BenchmarkVerifyPod/warn-baseline_pod-12                             3076          2964          -3.64%
BenchmarkVerifyPod/warn-baseline_deployment-12                      3111          3069          -1.35%
BenchmarkVerifyPod/warn-restricted_pod-12                           3155          3223          +2.16%
BenchmarkVerifyPod/warn-restricted_deployment-12                    3235          3443          +6.43%
BenchmarkVerifyPod/enforce-warn-audit-baseline_pod-12               5148          5193          +0.87%
BenchmarkVerifyPod/enforce-warn-audit-baseline_deployment-12        4147          4295          +3.57%
BenchmarkVerifyPod/warn-baseline-audit-restricted_pod-12            4286          4363          +1.80%
BenchmarkVerifyPod/warn-baseline-audit-restricted_deployment-12     4447          4482          +0.79%

benchmark                                                           old allocs     new allocs     delta
BenchmarkVerifyPod/enforce-implicit_pod-12                          12             2              -83.33%
BenchmarkVerifyPod/enforce-implicit_deployment-12                   14             2              -85.71%
BenchmarkVerifyPod/enforce-privileged_pod-12                        12             2              -83.33%
BenchmarkVerifyPod/enforce-privileged_deployment-12                 14             2              -85.71%
BenchmarkVerifyPod/enforce-baseline_pod-12                          17             17             +0.00%
BenchmarkVerifyPod/enforce-baseline_deployment-12                   14             2              -85.71%
BenchmarkVerifyPod/enforce-restricted_pod-12                        17             17             +0.00%
BenchmarkVerifyPod/enforce-restricted_deployment-12                 14             2              -85.71%
BenchmarkVerifyPod/warn-baseline_pod-12                             17             17             +0.00%
BenchmarkVerifyPod/warn-baseline_deployment-12                      19             19             +0.00%
BenchmarkVerifyPod/warn-restricted_pod-12                           17             17             +0.00%
BenchmarkVerifyPod/warn-restricted_deployment-12                    19             19             +0.00%
BenchmarkVerifyPod/enforce-warn-audit-baseline_pod-12               27             27             +0.00%
BenchmarkVerifyPod/enforce-warn-audit-baseline_deployment-12        24             24             +0.00%
BenchmarkVerifyPod/warn-baseline-audit-restricted_pod-12            22             22             +0.00%
BenchmarkVerifyPod/warn-baseline-audit-restricted_deployment-12     24             24             +0.00%

benchmark                                                           old bytes     new bytes     delta
BenchmarkVerifyPod/enforce-implicit_pod-12                          2120          208           -90.19%
BenchmarkVerifyPod/enforce-implicit_deployment-12                   2304          208           -90.97%
BenchmarkVerifyPod/enforce-privileged_pod-12                        2120          208           -90.19%
BenchmarkVerifyPod/enforce-privileged_deployment-12                 2304          208           -90.97%
BenchmarkVerifyPod/enforce-baseline_pod-12                          3368          3368          +0.00%
BenchmarkVerifyPod/enforce-baseline_deployment-12                   2304          208           -90.97%
BenchmarkVerifyPod/enforce-restricted_pod-12                        3368          3368          +0.00%
BenchmarkVerifyPod/enforce-restricted_deployment-12                 2304          208           -90.97%
BenchmarkVerifyPod/warn-baseline_pod-12                             3368          3368          +0.00%
BenchmarkVerifyPod/warn-baseline_deployment-12                      3552          3552          +0.00%
BenchmarkVerifyPod/warn-restricted_pod-12                           3368          3368          +0.00%
BenchmarkVerifyPod/warn-restricted_deployment-12                    3552          3552          +0.00%
BenchmarkVerifyPod/enforce-warn-audit-baseline_pod-12               5864          5864          +0.00%
BenchmarkVerifyPod/enforce-warn-audit-baseline_deployment-12        4800          4800          +0.00%
BenchmarkVerifyPod/warn-baseline-audit-restricted_pod-12            4616          4616          +0.00%
BenchmarkVerifyPod/warn-baseline-audit-restricted_deployment-12     4800          4800          +0.00%
This commit is contained in:
Jordan Liggitt 2021-08-25 17:08:06 -04:00
parent 13e0887c4c
commit d5589ba65f
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
staging/src/k8s.io/pod-security-admission/admission/admission.go
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@ -302,6 +302,17 @@ func (a *Admission) ValidatePod(ctx context.Context, attrs Attributes) *admissio
return allowedResponse()
}
// short-circuit on privileged enforce+audit+warn namespaces
namespace, err := a.NamespaceGetter.GetNamespace(ctx, attrs.GetNamespace())
if err != nil {
klog.ErrorS(err, "failed to fetch pod namespace", "namespace", attrs.GetNamespace())
return internalErrorResponse(fmt.Sprintf("failed to lookup namespace %s", attrs.GetNamespace()))
}
nsPolicy, _ := a.PolicyToEvaluate(namespace.Labels)
if nsPolicy.Enforce.Level == api.LevelPrivileged && nsPolicy.Warn.Level == api.LevelPrivileged && nsPolicy.Audit.Level == api.LevelPrivileged {
return allowedResponse()
}
obj, err := attrs.GetObject()
if err != nil {
klog.ErrorS(err, "failed to decode object")
@ -341,6 +352,17 @@ func (a *Admission) ValidatePodController(ctx context.Context, attrs Attributes)
return allowedResponse()
}
// short-circuit on privileged audit+warn namespaces
namespace, err := a.NamespaceGetter.GetNamespace(ctx, attrs.GetNamespace())
if err != nil {
klog.ErrorS(err, "failed to fetch pod namespace", "namespace", attrs.GetNamespace())
return internalErrorResponse(fmt.Sprintf("failed to lookup namespace %s", attrs.GetNamespace()))
}
nsPolicy, _ := a.PolicyToEvaluate(namespace.Labels)
if nsPolicy.Warn.Level == api.LevelPrivileged && nsPolicy.Audit.Level == api.LevelPrivileged {
return allowedResponse()
}
obj, err := attrs.GetObject()
if err != nil {
klog.ErrorS(err, "failed to decode object")