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k8s_util.go
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k8s_util.go
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// Copyright 2020 Antrea Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package e2e
import (
"context"
"fmt"
"strings"
"time"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
appsv1 "k8s.io/api/apps/v1"
v1 "k8s.io/api/core/v1"
v1net "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
crdv1alpha1 "antrea.io/antrea/pkg/apis/crd/v1alpha1"
crdv1alpha2 "antrea.io/antrea/pkg/apis/crd/v1alpha2"
crdv1alpha3 "antrea.io/antrea/pkg/apis/crd/v1alpha3"
legacycorev1a2 "antrea.io/antrea/pkg/legacyapis/core/v1alpha2"
legacysecv1alpha1 "antrea.io/antrea/pkg/legacyapis/security/v1alpha1"
)
type KubernetesUtils struct {
*TestData
podCache map[string][]v1.Pod
}
func NewKubernetesUtils(data *TestData) (*KubernetesUtils, error) {
return &KubernetesUtils{
TestData: data,
podCache: map[string][]v1.Pod{},
}, nil
}
// GetPodByLabel returns a Pod with the matching Namespace and "pod" label.
func (k *KubernetesUtils) GetPodByLabel(ns string, name string) (*v1.Pod, error) {
pods, err := k.getPodsUncached(ns, "pod", name)
if err != nil {
return nil, errors.WithMessagef(err, "unable to get Pod in Namespace %s with label pod=%s", ns, name)
}
if len(pods) == 0 {
return nil, nil
}
return &pods[0], nil
}
func (k *KubernetesUtils) getPodsUncached(ns string, key, val string) ([]v1.Pod, error) {
v1PodList, err := k.clientset.CoreV1().Pods(ns).List(context.TODO(), metav1.ListOptions{
LabelSelector: fmt.Sprintf("%v=%v", key, val),
})
if err != nil {
return nil, errors.WithMessage(err, "unable to list pods")
}
return v1PodList.Items, nil
}
// GetPodsByLabel returns an array of all Pods in the given Namespace having a k/v label pair.
func (k *KubernetesUtils) GetPodsByLabel(ns string, key string, val string) ([]v1.Pod, error) {
if p, ok := k.podCache[fmt.Sprintf("%v_%v_%v", ns, key, val)]; ok {
return p, nil
}
v1PodList, err := k.getPodsUncached(ns, key, val)
if err != nil {
return nil, errors.WithMessage(err, "unable to list pods")
}
k.podCache[fmt.Sprintf("%v_%v_%v", ns, key, val)] = v1PodList
return v1PodList, nil
}
// Probe execs into a Pod and checks its connectivity to another Pod. Of course it assumes
// that the target Pod is serving on the input port, and also that agnhost is installed.
func (k *KubernetesUtils) Probe(ns1, pod1, ns2, pod2 string, port int32, protocol v1.Protocol) (PodConnectivityMark, error) {
fromPods, err := k.GetPodsByLabel(ns1, "pod", pod1)
if err != nil {
return Error, fmt.Errorf("unable to get Pods from Namespace %s: %v", ns1, err)
}
if len(fromPods) == 0 {
return Error, fmt.Errorf("no Pod of label pod=%s in Namespace %s found", pod1, ns1)
}
fromPod := fromPods[0]
toPods, err := k.GetPodsByLabel(ns2, "pod", pod2)
if err != nil {
return Error, fmt.Errorf("unable to get Pods from Namespace %s: %v", ns2, err)
}
if len(toPods) == 0 {
return Error, fmt.Errorf("no Pod of label pod=%s in Namespace %s found", pod2, ns2)
}
toPod := toPods[0]
// Both IPv4 and IPv6 address should be tested.
connectivity := Unknown
for _, eachIP := range toPod.Status.PodIPs {
toIP := eachIP.IP
// If it's an IPv6 address, add "[]" around it.
if strings.Contains(toIP, ":") {
toIP = fmt.Sprintf("[%s]", toIP)
}
// There seems to be an issue when running Antrea in Kind where tunnel traffic is dropped at
// first. This leads to the first test being run consistently failing. To avoid this issue
// until it is resolved, we try to connect 3 times.
// See https://github.com/antrea-io/antrea/issues/467.
cmd := []string{
"/bin/sh",
"-c",
}
switch protocol {
case v1.ProtocolTCP:
cmd = append(cmd, fmt.Sprintf("for i in $(seq 1 3); do /agnhost connect %s:%d --timeout=1s --protocol=tcp && exit 0 || true; done; exit 1", toIP, port))
case v1.ProtocolUDP:
cmd = append(cmd, fmt.Sprintf("for i in $(seq 1 3); do /agnhost connect %s:%d --timeout=1s --protocol=udp && exit 0 || true; done; exit 1", toIP, port))
case v1.ProtocolSCTP:
cmd = append(cmd, fmt.Sprintf("for i in $(seq 1 3); do /agnhost connect %s:%d --timeout=1s --protocol=sctp && exit 0 || true; done; exit 1", toIP, port))
}
// HACK: inferring container name as c80, c81, etc, for simplicity.
containerName := fmt.Sprintf("c%v", port)
log.Tracef("Running: kubectl exec %s -c %s -n %s -- %s", fromPod.Name, containerName, fromPod.Namespace, strings.Join(cmd, " "))
stdout, stderr, err := k.runCommandFromPod(fromPod.Namespace, fromPod.Name, containerName, cmd)
var curConnectivity PodConnectivityMark
if err != nil {
// log this error as trace since may be an expected failure
log.Tracef("%s/%s -> %s/%s: error when running command: err - %v /// stdout - %s /// stderr - %s", ns1, pod1, ns2, pod2, err, stdout, stderr)
// do not return an error
if strings.Contains(stderr, "TIMEOUT") {
curConnectivity = Dropped
} else {
curConnectivity = Rejected
}
} else {
curConnectivity = Connected
}
if connectivity == Unknown {
connectivity = curConnectivity
} else if connectivity != curConnectivity {
return Error, nil
}
}
return connectivity, nil
}
// CreateOrUpdateNamespace is a convenience function for idempotent setup of Namespaces
func (k *KubernetesUtils) CreateOrUpdateNamespace(n string, labels map[string]string) (*v1.Namespace, error) {
ns := &v1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: n,
Labels: labels,
},
}
nsr, err := k.clientset.CoreV1().Namespaces().Create(context.TODO(), ns, metav1.CreateOptions{})
if err == nil {
log.Infof("Created Namespace %s", n)
return nsr, nil
}
log.Debugf("Unable to create Namespace %s, let's try updating it instead (error: %s)", ns.Name, err)
nsr, err = k.clientset.CoreV1().Namespaces().Update(context.TODO(), ns, metav1.UpdateOptions{})
if err != nil {
log.Debugf("Unable to update Namespace %s: %s", ns, err)
}
return nsr, err
}
// CreateOrUpdateDeployment is a convenience function for idempotent setup of deployments
func (k *KubernetesUtils) CreateOrUpdateDeployment(ns, deploymentName string, replicas int32, labels map[string]string) (*appsv1.Deployment, error) {
zero := int64(0)
log.Infof("Creating/updating Deployment '%s/%s'", ns, deploymentName)
makeContainerSpec := func(port int32, protocol v1.Protocol) v1.Container {
var args []string
switch protocol {
case v1.ProtocolTCP:
args = []string{fmt.Sprintf("/agnhost serve-hostname --tcp --http=false --port=%d", port)}
case v1.ProtocolUDP:
args = []string{fmt.Sprintf("/agnhost serve-hostname --udp --http=false --port=%d", port)}
case v1.ProtocolSCTP:
args = []string{"/agnhost porter"}
default:
args = []string{fmt.Sprintf("/agnhost serve-hostname --udp --http=false --port=%d & /agnhost serve-hostname --tcp --http=false --port=%d & /agnhost porter", port, port)}
}
return v1.Container{
Name: fmt.Sprintf("c%d", port),
ImagePullPolicy: v1.PullIfNotPresent,
Image: "k8s.gcr.io/e2e-test-images/agnhost:2.29",
Env: []v1.EnvVar{{Name: fmt.Sprintf("SERVE_SCTP_PORT_%d", port), Value: "foo"}},
Command: []string{"/bin/bash", "-c"},
Args: args,
SecurityContext: &v1.SecurityContext{},
Ports: []v1.ContainerPort{
{
ContainerPort: port,
Name: fmt.Sprintf("serve-%d", port),
},
},
}
}
deployment := &appsv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: deploymentName,
Labels: labels,
Namespace: ns,
},
Spec: appsv1.DeploymentSpec{
Replicas: &replicas,
Selector: &metav1.LabelSelector{MatchLabels: labels},
Template: v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: labels,
Namespace: ns,
},
Spec: v1.PodSpec{
TerminationGracePeriodSeconds: &zero,
Containers: []v1.Container{
makeContainerSpec(80, "ALL"),
makeContainerSpec(81, "ALL"),
makeContainerSpec(8080, v1.ProtocolTCP),
makeContainerSpec(8081, v1.ProtocolTCP),
makeContainerSpec(8082, v1.ProtocolTCP),
makeContainerSpec(8083, v1.ProtocolTCP),
makeContainerSpec(8084, v1.ProtocolTCP),
makeContainerSpec(8085, v1.ProtocolTCP),
},
},
},
},
}
d, err := k.clientset.AppsV1().Deployments(ns).Create(context.TODO(), deployment, metav1.CreateOptions{})
if err == nil {
log.Infof("Created deployment '%s/%s'", ns, d.Name)
return d, nil
}
log.Debugf("Unable to create deployment %s in Namespace %s, let's try update instead", deployment.Name, ns)
d, err = k.clientset.AppsV1().Deployments(ns).Update(context.TODO(), deployment, metav1.UpdateOptions{})
if err != nil {
log.Debugf("Unable to update deployment '%s/%s': %s", ns, deployment.Name, err)
}
return d, err
}
// BuildService is a convenience function for building a corev1.Service spec.
func (k *KubernetesUtils) BuildService(svcName, svcNS string, port, targetPort int, selector map[string]string, serviceType *v1.ServiceType) *v1.Service {
service := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: svcName,
Namespace: svcNS,
},
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{
Port: int32(port),
TargetPort: intstr.FromInt(targetPort),
}},
Selector: selector,
},
}
if serviceType != nil {
service.Spec.Type = *serviceType
}
return service
}
// CreateOrUpdateService is a convenience function for updating/creating Services.
func (k *KubernetesUtils) CreateOrUpdateService(svc *v1.Service) (*v1.Service, error) {
log.Infof("Creating/updating Service %s in ns %s", svc.Name, svc.Namespace)
svcReturned, err := k.clientset.CoreV1().Services(svc.Namespace).Get(context.TODO(), svc.Name, metav1.GetOptions{})
if err != nil {
service, err := k.clientset.CoreV1().Services(svc.Namespace).Create(context.TODO(), svc, metav1.CreateOptions{})
if err != nil {
log.Infof("Unable to create Service %s/%s: %s", svc.Namespace, svc.Name, err)
return nil, err
}
return service, nil
} else if svcReturned.Name != "" {
log.Debugf("Service %s/%s already exists, updating", svc.Namespace, svc.Name)
clusterIP := svcReturned.Spec.ClusterIP
svcReturned.Spec = svc.Spec
svcReturned.Spec.ClusterIP = clusterIP
service, err := k.clientset.CoreV1().Services(svc.Namespace).Update(context.TODO(), svcReturned, metav1.UpdateOptions{})
return service, err
}
return nil, fmt.Errorf("error occurred in creating/updating Service %s", svc.Name)
}
// GetService is a convenience function for getting Service
func (k *KubernetesUtils) GetService(namespace, name string) (*v1.Service, error) {
res, err := k.clientset.CoreV1().Services(namespace).Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// DeleteService is a convenience function for deleting a Service by Namespace and name.
func (k *KubernetesUtils) DeleteService(ns, name string) error {
log.Infof("Deleting Service %s in ns %s", name, ns)
err := k.clientset.CoreV1().Services(ns).Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete Service %s", name)
}
return nil
}
// CleanServices is a convenience function for deleting Services in the cluster.
func (k *KubernetesUtils) CleanServices(namespaces []string) error {
for _, ns := range namespaces {
l, err := k.clientset.CoreV1().Services(ns).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list Services in ns %s", ns)
}
for _, svc := range l.Items {
if err := k.DeleteService(svc.Namespace, svc.Name); err != nil {
return err
}
}
}
return nil
}
// CreateOrUpdateNetworkPolicy is a convenience function for updating/creating netpols. Updating is important since
// some tests update a network policy to confirm that mutation works with a CNI.
func (k *KubernetesUtils) CreateOrUpdateNetworkPolicy(netpol *v1net.NetworkPolicy) (*v1net.NetworkPolicy, error) {
log.Infof("Creating/updating NetworkPolicy '%s/%s'", netpol.Namespace, netpol.Name)
np, err := k.clientset.NetworkingV1().NetworkPolicies(netpol.Namespace).Update(context.TODO(), netpol, metav1.UpdateOptions{})
if err == nil {
return np, err
}
log.Debugf("Unable to update NetworkPolicy '%s/%s', let's try creating it instead (error: %s)", netpol.Namespace, netpol.Name, err)
np, err = k.clientset.NetworkingV1().NetworkPolicies(netpol.Namespace).Create(context.TODO(), netpol, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create network policy: %s", err)
}
return np, err
}
// GetNetworkPolicy is a convenience function for getting k8s NetworkPolicies.
func (k *KubernetesUtils) GetNetworkPolicy(namespace, name string) (*v1net.NetworkPolicy, error) {
res, err := k.clientset.NetworkingV1().NetworkPolicies(namespace).Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// DeleteNetworkPolicy is a convenience function for deleting NetworkPolicy by name and Namespace.
func (k *KubernetesUtils) DeleteNetworkPolicy(ns, name string) error {
log.Infof("Deleting NetworkPolicy '%s/%s'", ns, name)
err := k.clientset.NetworkingV1().NetworkPolicies(ns).Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete NetworkPolicy '%s'", name)
}
return nil
}
// CleanNetworkPolicies is a convenience function for deleting NetworkPolicies in the provided namespaces.
func (k *KubernetesUtils) CleanNetworkPolicies(namespaces []string) error {
for _, ns := range namespaces {
l, err := k.clientset.NetworkingV1().NetworkPolicies(ns).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list NetworkPolicy in Namespace '%s'", ns)
}
for _, np := range l.Items {
if err = k.DeleteNetworkPolicy(np.Namespace, np.Name); err != nil {
return err
}
}
}
return nil
}
// CreateTier is a convenience function for creating an Antrea Policy Tier by name and priority.
func (k *KubernetesUtils) CreateNewTier(name string, tierPriority int32) (*crdv1alpha1.Tier, error) {
log.Infof("Creating tier %s", name)
_, err := k.crdClient.CrdV1alpha1().Tiers().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
tr := &crdv1alpha1.Tier{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: crdv1alpha1.TierSpec{Priority: tierPriority},
}
tr, err = k.crdClient.CrdV1alpha1().Tiers().Create(context.TODO(), tr, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create tier %s: %s", name, err)
}
return tr, err
}
return nil, fmt.Errorf("tier with name %s already exists", name)
}
// GetTier is a convenience function for getting Tier.
func (k *KubernetesUtils) GetTier(name string) (*crdv1alpha1.Tier, error) {
res, err := k.crdClient.CrdV1alpha1().Tiers().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// UpdateTier is a convenience function for updating an Antrea Policy Tier.
func (k *KubernetesUtils) UpdateTier(tier *crdv1alpha1.Tier) (*crdv1alpha1.Tier, error) {
log.Infof("Updating tier %s", tier.Name)
updatedTier, err := k.crdClient.CrdV1alpha1().Tiers().Update(context.TODO(), tier, metav1.UpdateOptions{})
return updatedTier, err
}
// DeleteTier is a convenience function for deleting an Antrea Policy Tier with specific name.
func (k *KubernetesUtils) DeleteTier(name string) error {
_, err := k.crdClient.CrdV1alpha1().Tiers().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return errors.Wrapf(err, "unable to get tier %s", name)
}
log.Infof("Deleting tier %s", name)
if err = k.crdClient.CrdV1alpha1().Tiers().Delete(context.TODO(), name, metav1.DeleteOptions{}); err != nil {
return errors.Wrapf(err, "unable to delete tier %s", name)
}
return nil
}
// CreateOrUpdateV1Alpha2CG is a convenience function for idempotent setup of crd/v1alpha2 ClusterGroups
func (k *KubernetesUtils) CreateOrUpdateV1Alpha2CG(cg *crdv1alpha2.ClusterGroup) (*crdv1alpha2.ClusterGroup, error) {
log.Infof("Creating/updating ClusterGroup %s", cg.Name)
cgReturned, err := k.crdClient.CrdV1alpha2().ClusterGroups().Get(context.TODO(), cg.Name, metav1.GetOptions{})
if err != nil {
cgr, err := k.crdClient.CrdV1alpha2().ClusterGroups().Create(context.TODO(), cg, metav1.CreateOptions{})
if err != nil {
log.Infof("Unable to create cluster group %s: %v", cg.Name, err)
return nil, err
}
return cgr, nil
} else if cgReturned.Name != "" {
log.Debugf("ClusterGroup with name %s already exists, updating", cg.Name)
cgReturned.Spec = cg.Spec
cgr, err := k.crdClient.CrdV1alpha2().ClusterGroups().Update(context.TODO(), cgReturned, metav1.UpdateOptions{})
return cgr, err
}
return nil, fmt.Errorf("error occurred in creating/updating ClusterGroup %s", cg.Name)
}
// CreateOrUpdateV1Alpha3CG is a convenience function for idempotent setup of crd/v1alpha3 ClusterGroups
func (k *KubernetesUtils) CreateOrUpdateV1Alpha3CG(cg *crdv1alpha3.ClusterGroup) (*crdv1alpha3.ClusterGroup, error) {
log.Infof("Creating/updating ClusterGroup %s", cg.Name)
cgReturned, err := k.crdClient.CrdV1alpha3().ClusterGroups().Get(context.TODO(), cg.Name, metav1.GetOptions{})
if err != nil {
cgr, err := k.crdClient.CrdV1alpha3().ClusterGroups().Create(context.TODO(), cg, metav1.CreateOptions{})
if err != nil {
log.Infof("Unable to create cluster group %s: %v", cg.Name, err)
return nil, err
}
return cgr, nil
} else if cgReturned.Name != "" {
log.Debugf("ClusterGroup with name %s already exists, updating", cg.Name)
cgReturned.Spec = cg.Spec
cgr, err := k.crdClient.CrdV1alpha3().ClusterGroups().Update(context.TODO(), cgReturned, metav1.UpdateOptions{})
return cgr, err
}
return nil, fmt.Errorf("error occurred in creating/updating ClusterGroup %s", cg.Name)
}
func (k *KubernetesUtils) GetV1Alpha2CG(cgName string) (*crdv1alpha2.ClusterGroup, error) {
return k.crdClient.CrdV1alpha2().ClusterGroups().Get(context.TODO(), cgName, metav1.GetOptions{})
}
func (k *KubernetesUtils) GetV1Alpha3CG(cgName string) (*crdv1alpha3.ClusterGroup, error) {
return k.crdClient.CrdV1alpha3().ClusterGroups().Get(context.TODO(), cgName, metav1.GetOptions{})
}
// CreateCG is a convenience function for creating an Antrea ClusterGroup by name and selector.
func (k *KubernetesUtils) CreateCG(name string, pSelector, nSelector *metav1.LabelSelector, ipBlocks []crdv1alpha1.IPBlock) (*crdv1alpha3.ClusterGroup, error) {
log.Infof("Creating clustergroup %s", name)
_, err := k.crdClient.CrdV1alpha3().ClusterGroups().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
cg := &crdv1alpha3.ClusterGroup{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
}
if pSelector != nil {
cg.Spec.PodSelector = pSelector
}
if nSelector != nil {
cg.Spec.NamespaceSelector = nSelector
}
if len(ipBlocks) > 0 {
cg.Spec.IPBlocks = ipBlocks
}
cg, err = k.crdClient.CrdV1alpha3().ClusterGroups().Create(context.TODO(), cg, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create clustergroup %s: %s", name, err)
}
return cg, err
}
return nil, fmt.Errorf("clustergroup with name %s already exists", name)
}
// GetCG is a convenience function for getting ClusterGroups
func (k *KubernetesUtils) GetCG(name string) (*crdv1alpha2.ClusterGroup, error) {
res, err := k.crdClient.CrdV1alpha2().ClusterGroups().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// DeleteV1Alpha2CG is a convenience function for deleting crd/v1alpha2 ClusterGroup by name.
func (k *KubernetesUtils) DeleteV1Alpha2CG(name string) error {
log.Infof("Deleting ClusterGroup %s", name)
err := k.crdClient.CrdV1alpha2().ClusterGroups().Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete ClusterGroup %s", name)
}
return nil
}
// DeleteV1Alpha3CG is a convenience function for deleting core/v1alpha3 ClusterGroup by name.
func (k *KubernetesUtils) DeleteV1Alpha3CG(name string) error {
log.Infof("deleting ClusterGroup %s", name)
err := k.crdClient.CrdV1alpha3().ClusterGroups().Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete ClusterGroup %s", name)
}
return nil
}
// CleanCGs is a convenience function for deleting all ClusterGroups in the cluster.
func (k *KubernetesUtils) CleanCGs() error {
l, err := k.crdClient.CrdV1alpha2().ClusterGroups().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list ClusterGroups in v1alpha2")
}
for _, cg := range l.Items {
if err := k.DeleteV1Alpha2CG(cg.Name); err != nil {
return err
}
}
l2, err := k.crdClient.CrdV1alpha3().ClusterGroups().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list ClusterGroups in v1alpha3")
}
for _, cg := range l2.Items {
if err := k.DeleteV1Alpha3CG(cg.Name); err != nil {
return err
}
}
return nil
}
// CreateOrUpdateACNP is a convenience function for updating/creating AntreaClusterNetworkPolicies.
func (k *KubernetesUtils) CreateOrUpdateACNP(cnp *crdv1alpha1.ClusterNetworkPolicy) (*crdv1alpha1.ClusterNetworkPolicy, error) {
log.Infof("Creating/updating ClusterNetworkPolicy %s", cnp.Name)
cnpReturned, err := k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().Get(context.TODO(), cnp.Name, metav1.GetOptions{})
if err != nil {
log.Debugf("Creating ClusterNetworkPolicy %s", cnp.Name)
cnp, err = k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().Create(context.TODO(), cnp, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create ClusterNetworkPolicy: %s", err)
}
return cnp, err
} else if cnpReturned.Name != "" {
log.Debugf("ClusterNetworkPolicy with name %s already exists, updating", cnp.Name)
cnpReturned.Spec = cnp.Spec
cnp, err = k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().Update(context.TODO(), cnpReturned, metav1.UpdateOptions{})
return cnp, err
}
return nil, fmt.Errorf("error occurred in creating/updating ClusterNetworkPolicy %s", cnp.Name)
}
// GetACNP is a convenience function for getting AntreaClusterNetworkPolicies.
func (k *KubernetesUtils) GetACNP(name string) (*crdv1alpha1.ClusterNetworkPolicy, error) {
res, err := k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// DeleteACNP is a convenience function for deleting ACNP by name.
func (k *KubernetesUtils) DeleteACNP(name string) error {
log.Infof("Deleting AntreaClusterNetworkPolicies %s", name)
err := k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete ClusterNetworkPolicy %s", name)
}
return nil
}
// CleanACNPs is a convenience function for deleting all Antrea ClusterNetworkPolicies in the cluster.
func (k *KubernetesUtils) CleanACNPs() error {
l, err := k.crdClient.CrdV1alpha1().ClusterNetworkPolicies().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list AntreaClusterNetworkPolicies")
}
for _, cnp := range l.Items {
if err = k.DeleteACNP(cnp.Name); err != nil {
return err
}
}
return nil
}
// CreateOrUpdateANP is a convenience function for updating/creating Antrea NetworkPolicies.
func (k *KubernetesUtils) CreateOrUpdateANP(anp *crdv1alpha1.NetworkPolicy) (*crdv1alpha1.NetworkPolicy, error) {
log.Infof("Creating/updating Antrea NetworkPolicy %s/%s", anp.Namespace, anp.Name)
cnpReturned, err := k.crdClient.CrdV1alpha1().NetworkPolicies(anp.Namespace).Get(context.TODO(), anp.Name, metav1.GetOptions{})
if err != nil {
log.Debugf("Creating Antrea NetworkPolicy %s", anp.Name)
anp, err = k.crdClient.CrdV1alpha1().NetworkPolicies(anp.Namespace).Create(context.TODO(), anp, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create Antrea NetworkPolicy: %s", err)
}
return anp, err
} else if cnpReturned.Name != "" {
log.Debugf("Antrea NetworkPolicy with name %s already exists, updating", anp.Name)
anp, err = k.crdClient.CrdV1alpha1().NetworkPolicies(anp.Namespace).Update(context.TODO(), anp, metav1.UpdateOptions{})
return anp, err
}
return nil, fmt.Errorf("error occurred in creating/updating Antrea NetworkPolicy %s", anp.Name)
}
// GetANP is a convenience function for getting AntreaNetworkPolicies.
func (k *KubernetesUtils) GetANP(namespace, name string) (*crdv1alpha1.NetworkPolicy, error) {
res, err := k.crdClient.CrdV1alpha1().NetworkPolicies(namespace).Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return nil, err
}
return res, nil
}
// DeleteANP is a convenience function for deleting ANP by name and Namespace.
func (k *KubernetesUtils) DeleteANP(ns, name string) error {
log.Infof("Deleting Antrea NetworkPolicy '%s/%s'", ns, name)
err := k.crdClient.CrdV1alpha1().NetworkPolicies(ns).Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete Antrea NetworkPolicy %s", name)
}
return nil
}
// CleanANPs is a convenience function for deleting all Antrea NetworkPolicies in provided namespaces.
func (k *KubernetesUtils) CleanANPs(namespaces []string) error {
for _, ns := range namespaces {
l, err := k.crdClient.CrdV1alpha1().NetworkPolicies(ns).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list Antrea NetworkPolicies in ns %s", ns)
}
for _, anp := range l.Items {
if err = k.DeleteANP(anp.Namespace, anp.Name); err != nil {
return err
}
}
}
return nil
}
func (k *KubernetesUtils) waitForPodInNamespace(ns string, pod string) ([]string, error) {
log.Infof("Waiting for Pod '%s/%s'", ns, pod)
for {
k8sPod, err := k.GetPodByLabel(ns, pod)
if err != nil {
return nil, errors.WithMessagef(err, "unable to get Pod '%s/%s'", ns, pod)
}
if k8sPod != nil && k8sPod.Status.Phase == v1.PodRunning {
if k8sPod.Status.PodIP == "" {
return nil, errors.WithMessagef(err, "unable to get IP of Pod '%s/%s'", ns, pod)
}
var podIPs []string
for _, podIP := range k8sPod.Status.PodIPs {
podIPs = append(podIPs, podIP.IP)
}
log.Debugf("IPs of Pod '%s/%s': %s", ns, pod, podIPs)
log.Debugf("Pod running: %s/%s", ns, pod)
return podIPs, nil
}
log.Infof("Pod '%s/%s' not ready, waiting ...", ns, pod)
time.Sleep(2 * time.Second)
}
}
func (k *KubernetesUtils) waitForHTTPServers(allPods []Pod) error {
const maxTries = 10
log.Infof("waiting for HTTP servers (ports 80, 81 and 8080:8085) to become ready")
log.Infof("Waiting for HTTP servers (ports 80, 81, 5000 and 8080:8085) to become ready")
var wrong int
for i := 0; i < maxTries; i++ {
reachability := NewReachability(allPods, Connected)
k.Validate(allPods, reachability, 80, v1.ProtocolTCP)
k.Validate(allPods, reachability, 80, v1.ProtocolUDP)
k.Validate(allPods, reachability, 80, v1.ProtocolSCTP)
k.Validate(allPods, reachability, 81, v1.ProtocolTCP)
k.Validate(allPods, reachability, 81, v1.ProtocolUDP)
k.Validate(allPods, reachability, 81, v1.ProtocolSCTP)
for j := 8080; j < 8086; j++ {
k.Validate(allPods, reachability, int32(j), v1.ProtocolTCP)
}
_, wrong, _ = reachability.Summary()
if wrong == 0 {
log.Infof("All HTTP servers are ready")
return nil
}
log.Debugf("%d HTTP servers not ready", wrong)
time.Sleep(defaultInterval)
}
return errors.Errorf("after %d tries, %d HTTP servers are not ready", maxTries, wrong)
}
func (k *KubernetesUtils) Validate(allPods []Pod, reachability *Reachability, port int32, protocol v1.Protocol) {
type probeResult struct {
podFrom Pod
podTo Pod
connectivity PodConnectivityMark
err error
}
numProbes := len(allPods) * len(allPods)
resultsCh := make(chan *probeResult, numProbes)
// TODO: find better metrics, this is only for POC.
oneProbe := func(podFrom, podTo Pod) {
log.Tracef("Probing: %s -> %s", podFrom, podTo)
connectivity, err := k.Probe(podFrom.Namespace(), podFrom.PodName(), podTo.Namespace(), podTo.PodName(), port, protocol)
resultsCh <- &probeResult{podFrom, podTo, connectivity, err}
}
for _, pod1 := range allPods {
for _, pod2 := range allPods {
go oneProbe(pod1, pod2)
}
}
for i := 0; i < numProbes; i++ {
r := <-resultsCh
if r.err != nil {
log.Errorf("unable to perform probe %s -> %s: %v", r.podFrom, r.podTo, r.err)
}
reachability.Observe(r.podFrom, r.podTo, r.connectivity)
if r.connectivity != Connected && reachability.Expected.Get(r.podFrom.String(), r.podTo.String()) == Connected {
log.Warnf("FAILED CONNECTION FOR ALLOWED PODS %s -> %s !!!! ", r.podFrom, r.podTo)
}
}
}
func (k *KubernetesUtils) Bootstrap(namespaces, pods []string) (*map[string][]string, error) {
for _, ns := range namespaces {
_, err := k.CreateOrUpdateNamespace(ns, map[string]string{"ns": ns})
if err != nil {
return nil, errors.WithMessagef(err, "unable to create/update ns %s", ns)
}
for _, pod := range pods {
log.Infof("Creating/updating Pod '%s/%s'", ns, pod)
deployment := ns + pod
_, err := k.CreateOrUpdateDeployment(ns, deployment, 1, map[string]string{"pod": pod, "app": pod})
if err != nil {
return nil, errors.WithMessagef(err, "unable to create/update Deployment '%s/%s'", ns, pod)
}
}
}
var allPods []Pod
podIPs := make(map[string][]string, len(pods)*len(namespaces))
for _, podName := range pods {
for _, ns := range namespaces {
allPods = append(allPods, NewPod(ns, podName))
}
}
for _, pod := range allPods {
ips, err := k.waitForPodInNamespace(pod.Namespace(), pod.PodName())
if ips == nil || err != nil {
return nil, errors.WithMessagef(err, "unable to wait for Pod '%s/%s'", pod.Namespace(), pod.PodName())
}
podIPs[pod.String()] = ips
}
// Ensure that all the HTTP servers have time to start properly.
// See https://github.com/antrea-io/antrea/issues/472.
if err := k.waitForHTTPServers(allPods); err != nil {
return nil, err
}
return &podIPs, nil
}
func (k *KubernetesUtils) Cleanup(namespaces []string) {
// Cleanup any cluster-scoped resources.
if err := k.CleanACNPs(); err != nil {
log.Errorf("Error when cleaning-up ACNPs: %v", err)
}
if err := k.CleanCGs(); err != nil {
log.Errorf("Error when cleaning-up CGs: %v", err)
}
for _, ns := range namespaces {
log.Infof("Deleting test Namespace %s", ns)
if err := k.clientset.CoreV1().Namespaces().Delete(context.TODO(), ns, metav1.DeleteOptions{}); err != nil {
log.Errorf("Error when deleting Namespace '%s': %v", ns, err)
}
}
}
// CreateOrUpdateANP is a convenience function for updating/creating Antrea NetworkPolicies.
func (k *KubernetesUtils) CreateOrUpdateLegacyANP(anp *legacysecv1alpha1.NetworkPolicy) (*legacysecv1alpha1.NetworkPolicy, error) {
log.Infof("Creating/updating legacy Antrea NetworkPolicy %s/%s", anp.Namespace, anp.Name)
cnpReturned, err := k.legacyCrdClient.SecurityV1alpha1().NetworkPolicies(anp.Namespace).Get(context.TODO(), anp.Name, metav1.GetOptions{})
if err != nil {
log.Debugf("Creating legacy Antrea NetworkPolicy %s", anp.Name)
anp, err = k.legacyCrdClient.SecurityV1alpha1().NetworkPolicies(anp.Namespace).Create(context.TODO(), anp, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create legacy Antrea NetworkPolicy: %s", err)
}
return anp, err
} else if cnpReturned.Name != "" {
log.Debugf("Legacy Antrea NetworkPolicy with name %s already exists, updating", anp.Name)
anp, err = k.legacyCrdClient.SecurityV1alpha1().NetworkPolicies(anp.Namespace).Update(context.TODO(), anp, metav1.UpdateOptions{})
return anp, err
}
return nil, fmt.Errorf("error occurred in creating/updating legacy Antrea NetworkPolicy %s", anp.Name)
}
// DeleteLegacyANP is a convenience function for deleting ANP by name and Namespace.
func (k *KubernetesUtils) DeleteLegacyANP(ns, name string) error {
log.Infof("Deleting legacy Antrea NetworkPolicy '%s/%s'", ns, name)
err := k.legacyCrdClient.SecurityV1alpha1().NetworkPolicies(ns).Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete legacy Antrea NetworkPolicy %s", name)
}
return nil
}
// CleanLegacyANPs is a convenience function for deleting all Antrea NetworkPolicies in provided namespaces.
func (k *KubernetesUtils) CleanLegacyANPs(namespaces []string) error {
for _, ns := range namespaces {
l, err := k.legacyCrdClient.SecurityV1alpha1().NetworkPolicies(ns).List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list legacy Antrea NetworkPolicies in ns %s", ns)
}
for _, anp := range l.Items {
if err = k.DeleteLegacyANP(anp.Namespace, anp.Name); err != nil {
return err
}
}
}
return nil
}
// CreateLegacyTier is a convenience function for creating a legacy Antrea Policy Tier by name and priority.
func (k *KubernetesUtils) CreateNewLegacyTier(name string, tierPriority int32) (*legacysecv1alpha1.Tier, error) {
log.Infof("Creating legacy tier %s", name)
_, err := k.legacyCrdClient.SecurityV1alpha1().Tiers().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
tr := &legacysecv1alpha1.Tier{
ObjectMeta: metav1.ObjectMeta{Name: name},
Spec: crdv1alpha1.TierSpec{Priority: tierPriority},
}
tr, err = k.legacyCrdClient.SecurityV1alpha1().Tiers().Create(context.TODO(), tr, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create legacy tier %s: %s", name, err)
}
return tr, err
}
return nil, fmt.Errorf("legacy tier with name %s already exists", name)
}
// UpdateLegacyTier is a convenience function for updating a legacy Antrea Policy Tier.
func (k *KubernetesUtils) UpdateLegacyTier(tier *legacysecv1alpha1.Tier) (*legacysecv1alpha1.Tier, error) {
log.Infof("Updating legacy tier %s", tier.Name)
updatedTier, err := k.legacyCrdClient.SecurityV1alpha1().Tiers().Update(context.TODO(), tier, metav1.UpdateOptions{})
return updatedTier, err
}
// DeleteLegacyTier is a convenience function for deleting a legacy Antrea Policy Tier with specific name.
func (k *KubernetesUtils) DeleteLegacyTier(name string) error {
_, err := k.legacyCrdClient.SecurityV1alpha1().Tiers().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
return errors.Wrapf(err, "unable to get legacy tier %s", name)
}
log.Infof("Deleting legacy tier %s", name)
if err = k.legacyCrdClient.SecurityV1alpha1().Tiers().Delete(context.TODO(), name, metav1.DeleteOptions{}); err != nil {
return errors.Wrapf(err, "unable to delete legacy tier %s", name)
}
return nil
}
// CreateLegacyCG is a convenience function for creating a legacy Antrea ClusterGroup by name and selector.
func (k *KubernetesUtils) CreateLegacyCG(name string, pSelector, nSelector *metav1.LabelSelector, ipBlock *crdv1alpha1.IPBlock) (*legacycorev1a2.ClusterGroup, error) {
log.Infof("Creating legacy clustergroup %s", name)
_, err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Get(context.TODO(), name, metav1.GetOptions{})
if err != nil {
cg := &legacycorev1a2.ClusterGroup{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
}
if pSelector != nil {
cg.Spec.PodSelector = pSelector
}
if nSelector != nil {
cg.Spec.NamespaceSelector = nSelector
}
if ipBlock != nil {
cg.Spec.IPBlock = ipBlock
}
cg, err = k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Create(context.TODO(), cg, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create legacy ClusterGroup %s: %s", name, err)
}
return cg, err
}
return nil, fmt.Errorf("legacy ClusterGroup with name %s already exists", name)
}
// CreateOrUpdateLegacyCG is a convenience function for idempotent setup of legacy ClusterGroups
func (k *KubernetesUtils) CreateOrUpdateLegacyCG(cg *legacycorev1a2.ClusterGroup) (*legacycorev1a2.ClusterGroup, error) {
log.Infof("Creating/updating legacy ClusterGroup %s", cg.Name)
cgReturned, err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Get(context.TODO(), cg.Name, metav1.GetOptions{})
if err != nil {
cgr, err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Create(context.TODO(), cg, metav1.CreateOptions{})
if err != nil {
log.Infof("Unable to create legacy ClusterGroup %s: %v", cg.Name, err)
return nil, err
}
return cgr, nil
} else if cgReturned.Name != "" {
log.Debugf("Legacy ClusterGroup with name %s already exists, updating", cg.Name)
cgReturned.Spec = cg.Spec
cgr, err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Update(context.TODO(), cgReturned, metav1.UpdateOptions{})
return cgr, err
}
return nil, fmt.Errorf("error occurred in creating/updating legacy ClusterGroup %s", cg.Name)
}
// DeleteLegacyCG is a convenience function for deleting legacy ClusterGroup by name.
func (k *KubernetesUtils) DeleteLegacyCG(name string) error {
log.Infof("Deleting ClusterGroup %s", name)
err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete legacy ClusterGroup %s", name)
}
return nil
}
// CleanCGs is a convenience function for deleting all ClusterGroups in the cluster.
func (k *KubernetesUtils) CleanLegacyCGs() error {
l, err := k.legacyCrdClient.CoreV1alpha2().ClusterGroups().List(context.TODO(), metav1.ListOptions{})
if err != nil {
return errors.Wrapf(err, "unable to list legacy ClusterGroups")
}
for _, cg := range l.Items {
if err := k.DeleteLegacyCG(cg.Name); err != nil {
return err
}
}
return nil
}
// CreateOrUpdateLegacyACNP is a convenience function for updating/creating AntreaClusterNetworkPolicies.
func (k *KubernetesUtils) CreateOrUpdateLegacyACNP(cnp *legacysecv1alpha1.ClusterNetworkPolicy) (*legacysecv1alpha1.ClusterNetworkPolicy, error) {
log.Infof("Creating/updating legacy ClusterNetworkPolicy %s", cnp.Name)
cnpReturned, err := k.legacyCrdClient.SecurityV1alpha1().ClusterNetworkPolicies().Get(context.TODO(), cnp.Name, metav1.GetOptions{})
if err != nil {
log.Debugf("Creating legacy ClusterNetworkPolicy %s", cnp.Name)
cnp, err = k.legacyCrdClient.SecurityV1alpha1().ClusterNetworkPolicies().Create(context.TODO(), cnp, metav1.CreateOptions{})
if err != nil {
log.Debugf("Unable to create legacy ClusterNetworkPolicy: %s", err)
}
return cnp, err
} else if cnpReturned.Name != "" {
log.Debugf("Legacy ClusterNetworkPolicy with name %s already exists, updating", cnp.Name)
cnpReturned.Spec = cnp.Spec
cnp, err = k.legacyCrdClient.SecurityV1alpha1().ClusterNetworkPolicies().Update(context.TODO(), cnpReturned, metav1.UpdateOptions{})
return cnp, err
}
return nil, fmt.Errorf("error occurred in creating/updating legacy ClusterNetworkPolicy %s", cnp.Name)
}
// DeleteLegacyACNP is a convenience function for deleting ACNP by name.
func (k *KubernetesUtils) DeleteLegacyACNP(name string) error {
log.Infof("Deleting AntreaClusterNetworkPolicies %s", name)
err := k.legacyCrdClient.SecurityV1alpha1().ClusterNetworkPolicies().Delete(context.TODO(), name, metav1.DeleteOptions{})
if err != nil {
return errors.Wrapf(err, "unable to delete legacy ClusterNetworkPolicy %s", name)
}
return nil
}
// CleanLegacyACNPs is a convenience function for deleting all Antrea ClusterNetworkPolicies in the cluster.
func (k *KubernetesUtils) CleanLegacyACNPs() error {