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Merge pull request #99312 from aojea/localtraffic

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e2e framework TestJig used for Service testing wasn't verifying UDP works
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Kubernetes Prow Robot 2021-02-23 15:23:28 -08:00 committed by GitHub
commit d25df9c6f6
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3 changed files with 20 additions and 38 deletions
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1
test/e2e/framework/service/BUILD
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@ -38,6 +38,7 @@ go_library(
"//test/utils:go_default_library",
"//test/utils/image:go_default_library",
"//vendor/github.com/onsi/ginkgo:go_default_library",
"//vendor/k8s.io/utils/net:go_default_library",
],
)

55
test/e2e/framework/service/jig.go
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@ -21,7 +21,6 @@ import (
"errors"
"fmt"
"net"
"regexp"
"strconv"
"strings"
"time"
@ -44,12 +43,12 @@ import (
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"k8s.io/kubernetes/test/e2e/framework"
e2enetwork "k8s.io/kubernetes/test/e2e/framework/network"
e2enode "k8s.io/kubernetes/test/e2e/framework/node"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
e2erc "k8s.io/kubernetes/test/e2e/framework/rc"
testutils "k8s.io/kubernetes/test/utils"
imageutils "k8s.io/kubernetes/test/utils/image"
utilsnet "k8s.io/utils/net"
)
// NodePortRange should match whatever the default/configured range is
@ -819,14 +818,10 @@ func testReachabilityOverServiceName(serviceName string, sp v1.ServicePort, exec
func testReachabilityOverClusterIP(clusterIP string, sp v1.ServicePort, execPod *v1.Pod) error {
// If .spec.clusterIP is set to "" or "None" for service, ClusterIP is not created, so reachability can not be tested over clusterIP:servicePort
isClusterIPV46, err := regexp.MatchString(e2enetwork.RegexIPv4+"||"+e2enetwork.RegexIPv6, clusterIP)
if err != nil {
if net.ParseIP(clusterIP) == nil {
return fmt.Errorf("unable to parse ClusterIP: %s", clusterIP)
}
if isClusterIPV46 {
return testEndpointReachability(clusterIP, sp.Port, sp.Protocol, execPod)
}
return nil
return testEndpointReachability(clusterIP, sp.Port, sp.Protocol, execPod)
}
func testReachabilityOverExternalIP(externalIP string, sp v1.ServicePort, execPod *v1.Pod) error {
@ -836,7 +831,7 @@ func testReachabilityOverExternalIP(externalIP string, sp v1.ServicePort, execPo
func testReachabilityOverNodePorts(nodes *v1.NodeList, sp v1.ServicePort, pod *v1.Pod, clusterIP string) error {
internalAddrs := e2enode.CollectAddresses(nodes, v1.NodeInternalIP)
externalAddrs := e2enode.CollectAddresses(nodes, v1.NodeExternalIP)
isClusterIPV4 := net.ParseIP(clusterIP).To4() != nil
isClusterIPV4 := utilsnet.IsIPv4String(clusterIP)
for _, internalAddr := range internalAddrs {
// If the node's internal address points to localhost, then we are not
@ -845,10 +840,8 @@ func testReachabilityOverNodePorts(nodes *v1.NodeList, sp v1.ServicePort, pod *v
framework.Logf("skipping testEndpointReachability() for internal adddress %s", internalAddr)
continue
}
isNodeInternalIPV4 := net.ParseIP(internalAddr).To4() != nil
// Check service reachability on the node internalIP which is same family
// as clusterIP
if isClusterIPV4 != isNodeInternalIPV4 {
// Check service reachability on the node internalIP which is same family as clusterIP
if isClusterIPV4 != utilsnet.IsIPv4String(internalAddr) {
framework.Logf("skipping testEndpointReachability() for internal adddress %s as it does not match clusterIP (%s) family", internalAddr, clusterIP)
continue
}
@ -859,8 +852,7 @@ func testReachabilityOverNodePorts(nodes *v1.NodeList, sp v1.ServicePort, pod *v
}
}
for _, externalAddr := range externalAddrs {
isNodeExternalIPV4 := net.ParseIP(externalAddr).To4() != nil
if isClusterIPV4 != isNodeExternalIPV4 {
if isClusterIPV4 != utilsnet.IsIPv4String(externalAddr) {
framework.Logf("skipping testEndpointReachability() for external adddress %s as it does not match clusterIP (%s) family", externalAddr, clusterIP)
continue
}
@ -890,19 +882,24 @@ func testEndpointReachability(endpoint string, port int32, protocol v1.Protocol,
cmd := ""
switch protocol {
case v1.ProtocolTCP:
cmd = fmt.Sprintf("nc -zv -t -w 2 %s %v", endpoint, port)
cmd = fmt.Sprintf("echo hostName | nc -v -t -w 2 %s %v", endpoint, port)
case v1.ProtocolUDP:
cmd = fmt.Sprintf("nc -zv -u -w 2 %s %v", endpoint, port)
cmd = fmt.Sprintf("echo hostName | nc -v -u -w 2 %s %v", endpoint, port)
default:
return fmt.Errorf("service reachablity check is not supported for %v", protocol)
return fmt.Errorf("service reachability check is not supported for %v", protocol)
}
err := wait.PollImmediate(1*time.Second, ServiceReachabilityShortPollTimeout, func() (bool, error) {
if _, err := framework.RunHostCmd(execPod.Namespace, execPod.Name, cmd); err != nil {
stdout, err := framework.RunHostCmd(execPod.Namespace, execPod.Name, cmd)
if err != nil {
framework.Logf("Service reachability failing with error: %v\nRetrying...", err)
return false, nil
}
return true, nil
trimmed := strings.TrimSpace(stdout)
if trimmed != "" {
return true, nil
}
return false, nil
})
if err != nil {
return fmt.Errorf("service is not reachable within %v timeout on endpoint %s over %s protocol", ServiceReachabilityShortPollTimeout, ep, protocol)
@ -1021,24 +1018,8 @@ func (j *TestJig) CheckServiceReachability(svc *v1.Service, pod *v1.Pod) error {
}
}
// CreateServicePods creates a replication controller with the label same as service. Service listens to HTTP.
// CreateServicePods creates a replication controller with the label same as service. Service listens to TCP and UDP.
func (j *TestJig) CreateServicePods(replica int) error {
config := testutils.RCConfig{
Client: j.Client,
Name: j.Name,
Image: framework.ServeHostnameImage,
Command: []string{"/agnhost", "serve-hostname"},
Namespace: j.Namespace,
Labels: j.Labels,
PollInterval: 3 * time.Second,
Timeout: framework.PodReadyBeforeTimeout,
Replicas: replica,
}
return e2erc.RunRC(config)
}
// CreateTCPUDPServicePods creates a replication controller with the label same as service. Service listens to TCP and UDP.
func (j *TestJig) CreateTCPUDPServicePods(replica int) error {
config := testutils.RCConfig{
Client: j.Client,
Name: j.Name,

2
test/e2e/network/service.go
View File

@ -1228,7 +1228,7 @@ var _ = SIGDescribe("Services", func() {
})
framework.ExpectNoError(err)
err = jig.CreateTCPUDPServicePods(2)
err = jig.CreateServicePods(2)
framework.ExpectNoError(err)
execPod := e2epod.CreateExecPodOrFail(cs, ns, "execpod", nil)
err = jig.CheckServiceReachability(nodePortService, execPod)