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Merge pull request #97736 from knabben/default-deny-egress

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Default deny egress with pod label selector
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Kubernetes Prow Robot 2021-01-06 16:41:50 -08:00 committed by GitHub
commit ab8dda3c88
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2 changed files with 27 additions and 1 deletions
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11
test/e2e/network/netpol/network_policy.go
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@ -586,6 +586,17 @@ var _ = SIGDescribeCopy("Netpol [LinuxOnly]", func() {
ValidateOrFail(k8s, model, &TestCase{FromPort: 81, ToPort: 80, Protocol: v1.ProtocolTCP, Reachability: reachabilityIsolated})
})
ginkgo.It("should deny egress from pods based on PodSelector [Feature:NetworkPolicy] ", func() {
nsX, _, _, model, k8s := getK8SModel(f)
policy := GetDenyEgressForTarget("deny-egress-pod-a", metav1.LabelSelector{MatchLabels: map[string]string{"pod": "a"}})
CreatePolicy(k8s, policy, nsX)
reachability := NewReachability(model.AllPods(), true)
reachability.ExpectAllEgress(NewPodString(nsX, "a"), false)
ValidateOrFail(k8s, model, &TestCase{FromPort: 81, ToPort: 80, Protocol: v1.ProtocolTCP, Reachability: reachability})
})
ginkgo.It("should work with Ingress, Egress specified together [Feature:NetworkPolicy]", func() {
allowedPodLabels := &metav1.LabelSelector{MatchLabels: map[string]string{"pod": "b"}}
policy := GetAllowIngressByPod("allow-client-a-via-pod-selector", map[string]string{"pod": "a"}, allowedPodLabels)

17
test/e2e/network/netpol/policies.go
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@ -26,7 +26,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// GetDenyIngress returns a default deny policy named 'name'.
// GetDenyIngress returns a default deny ingress policy.
func GetDenyIngress(name string) *networkingv1.NetworkPolicy {
return &networkingv1.NetworkPolicy{
ObjectMeta: metav1.ObjectMeta{
@ -34,11 +34,26 @@ func GetDenyIngress(name string) *networkingv1.NetworkPolicy {
},
Spec: networkingv1.NetworkPolicySpec{
PodSelector: metav1.LabelSelector{},
PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeIngress},
Ingress: []networkingv1.NetworkPolicyIngressRule{},
},
}
}
// GetDenyEgressForTarget returns a default deny egress policy.
func GetDenyEgressForTarget(name string, targetSelector metav1.LabelSelector) *networkingv1.NetworkPolicy {
return &networkingv1.NetworkPolicy{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
Spec: networkingv1.NetworkPolicySpec{
PodSelector: targetSelector,
PolicyTypes: []networkingv1.PolicyType{networkingv1.PolicyTypeEgress},
Egress: []networkingv1.NetworkPolicyEgressRule{},
},
}
}
// GetRandomIngressPolicies returns "num" random policies that allow a unique:n label, i.e.
// unique:1, unique:2, and so on. Used for creating a 'background' set of policies.
func GetRandomIngressPolicies(num int) []*networkingv1.NetworkPolicy {