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Merge pull request #80947 from Nordix/kubeadm-ds-e2e-pod-network-cidr

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kubeadm e2e networking test for dual-stack podSubnet check.
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Kubernetes Prow Robot 2019-08-07 14:44:58 -07:00 committed by GitHub
commit f96fcd095f
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1 changed files with 39 additions and 3 deletions
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42
test/e2e_kubeadm/networking_test.go
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@ -49,7 +49,6 @@ var _ = KubeadmDescribe("networking [setup-networking]", func() {
// We can determine this from the kubeadm config by looking at the number of
// IPs specified in networking.podSubnet
ginkgo.BeforeEach(func() {
// gets the ClusterConfiguration from the kubeadm kubeadm-config ConfigMap as a untyped map
cc := getClusterConfiguration(f.ClientSet)
// Extract the networking.podSubnet
@ -88,7 +87,7 @@ var _ = KubeadmDescribe("networking [setup-networking]", func() {
if ps, ok := netCC["podSubnet"]; ok {
// Check that the pod CIDR allocated to the node(s) is within the kubeadm-config podCIDR.
nodes, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{})
framework.ExpectNoError(err)
framework.ExpectNoError(err, "error listing nodes")
for _, node := range nodes.Items {
if !subnetWithinSubnet(ps.(string), node.Spec.PodCIDR) {
e2elog.Failf("failed due to node(%v) IP %v not inside configured pod subnet: %s", node.Name, node.Spec.PodCIDR, ps)
@ -113,7 +112,7 @@ var _ = KubeadmDescribe("networking [setup-networking]", func() {
// Get the kubernetes service in the default namespace.
// Check that service CIDR allocated is within the serviceSubnet range.
svc, err := f.ClientSet.CoreV1().Services("default").Get("kubernetes", metav1.GetOptions{})
framework.ExpectNoError(err)
framework.ExpectNoError(err, "error getting Service %q from namespace %q", "kubernetes", "default")
if !ipWithinSubnet(ss.(string), svc.Spec.ClusterIP) {
e2elog.Failf("failed due to service(%v) cluster-IP %v not inside configured service subnet: %s", svc.Name, svc.Spec.ClusterIP, ss)
}
@ -122,6 +121,43 @@ var _ = KubeadmDescribe("networking [setup-networking]", func() {
})
})
})
ginkgo.Context("dual-stack [Feature:IPv6DualStack]", func() {
ginkgo.Context("podSubnet", func() {
ginkgo.It("should be properly configured if specified in kubeadm-config", func() {
if !dualStack {
framework.Skipf("Skipping because cluster is not dual-stack")
}
if !podSubnetInKubeadmConfig {
framework.Skipf("Skipping because podSubnet was not specified in kubeadm-config")
}
cc := getClusterConfiguration(f.ClientSet)
if _, ok := cc["networking"]; ok {
netCC := cc["networking"].(map[interface{}]interface{})
if ps, ok := netCC["podSubnet"]; ok {
nodes, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{})
framework.ExpectNoError(err, "error listing nodes")
// Check that the pod CIDRs allocated to the node(s) are within the kubeadm-config podCIDR.
var found bool
configCIDRs := strings.Split(ps.(string), ",")
for _, node := range nodes.Items {
for _, nCIDR := range node.Spec.PodCIDRs {
found = false
for _, cCIDR := range configCIDRs {
if subnetWithinSubnet(cCIDR, nCIDR) {
found = true
break
}
}
if !found {
e2elog.Failf("failed due to the PodCIDRs (%v) of Node %q not being inside the configuration podSubnet CIDR %q", node.Spec.PodCIDRs, node.Name, configCIDRs)
}
}
}
}
}
})
})
})
})
// ipWithinSubnet returns true if an IP (targetIP) falls within the reference subnet (refIPNet)