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service.go
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service.go
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/*
Copyright 2014 The Kubernetes Authors All rights reserved.
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 (
"fmt"
"io/ioutil"
"math/rand"
"net"
"net/http"
"sort"
"strconv"
"strings"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
client "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/types"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/util/intstr"
"k8s.io/kubernetes/pkg/util/sets"
"k8s.io/kubernetes/pkg/util/wait"
)
// This should match whatever the default/configured range is
var ServiceNodePortRange = util.PortRange{Base: 30000, Size: 2768}
var _ = Describe("Services", func() {
f := NewFramework("services")
var c *client.Client
var extraNamespaces []string
BeforeEach(func() {
var err error
c, err = loadClient()
Expect(err).NotTo(HaveOccurred())
})
AfterEach(func() {
if testContext.DeleteNamespace {
for _, ns := range extraNamespaces {
By(fmt.Sprintf("Destroying namespace %v", ns))
if err := deleteNS(c, ns, 5*time.Minute /* namespace deletion timeout */); err != nil {
Failf("Couldn't delete namespace %s: %s", ns, err)
}
}
extraNamespaces = nil
} else {
Logf("Found DeleteNamespace=false, skipping namespace deletion!")
}
})
// TODO: We get coverage of TCP/UDP and multi-port services through the DNS test. We should have a simpler test for multi-port TCP here.
It("should provide secure master service [Conformance]", func() {
_, err := c.Services(api.NamespaceDefault).Get("kubernetes")
Expect(err).NotTo(HaveOccurred())
})
It("should serve a basic endpoint from pods [Conformance]", func() {
serviceName := "endpoint-test2"
ns := f.Namespace.Name
labels := map[string]string{
"foo": "bar",
"baz": "blah",
}
By("creating service " + serviceName + " in namespace " + ns)
defer func() {
err := c.Services(ns).Delete(serviceName)
Expect(err).NotTo(HaveOccurred())
}()
service := &api.Service{
ObjectMeta: api.ObjectMeta{
Name: serviceName,
},
Spec: api.ServiceSpec{
Selector: labels,
Ports: []api.ServicePort{{
Port: 80,
TargetPort: intstr.FromInt(80),
}},
},
}
_, err := c.Services(ns).Create(service)
Expect(err).NotTo(HaveOccurred())
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{})
names := map[string]bool{}
defer func() {
for name := range names {
err := c.Pods(ns).Delete(name, nil)
Expect(err).NotTo(HaveOccurred())
}
}()
name1 := "pod1"
name2 := "pod2"
createPodOrFail(c, ns, name1, labels, []api.ContainerPort{{ContainerPort: 80}})
names[name1] = true
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{name1: {80}})
createPodOrFail(c, ns, name2, labels, []api.ContainerPort{{ContainerPort: 80}})
names[name2] = true
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{name1: {80}, name2: {80}})
deletePodOrFail(c, ns, name1)
delete(names, name1)
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{name2: {80}})
deletePodOrFail(c, ns, name2)
delete(names, name2)
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{})
})
It("should serve multiport endpoints from pods [Conformance]", func() {
// repacking functionality is intentionally not tested here - it's better to test it in an integration test.
serviceName := "multi-endpoint-test"
ns := f.Namespace.Name
defer func() {
err := c.Services(ns).Delete(serviceName)
Expect(err).NotTo(HaveOccurred())
}()
labels := map[string]string{"foo": "bar"}
svc1port := "svc1"
svc2port := "svc2"
By("creating service " + serviceName + " in namespace " + ns)
service := &api.Service{
ObjectMeta: api.ObjectMeta{
Name: serviceName,
},
Spec: api.ServiceSpec{
Selector: labels,
Ports: []api.ServicePort{
{
Name: "portname1",
Port: 80,
TargetPort: intstr.FromString(svc1port),
},
{
Name: "portname2",
Port: 81,
TargetPort: intstr.FromString(svc2port),
},
},
},
}
_, err := c.Services(ns).Create(service)
Expect(err).NotTo(HaveOccurred())
port1 := 100
port2 := 101
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{})
names := map[string]bool{}
defer func() {
for name := range names {
err := c.Pods(ns).Delete(name, nil)
Expect(err).NotTo(HaveOccurred())
}
}()
containerPorts1 := []api.ContainerPort{
{
Name: svc1port,
ContainerPort: port1,
},
}
containerPorts2 := []api.ContainerPort{
{
Name: svc2port,
ContainerPort: port2,
},
}
podname1 := "pod1"
podname2 := "pod2"
createPodOrFail(c, ns, podname1, labels, containerPorts1)
names[podname1] = true
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{podname1: {port1}})
createPodOrFail(c, ns, podname2, labels, containerPorts2)
names[podname2] = true
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{podname1: {port1}, podname2: {port2}})
deletePodOrFail(c, ns, podname1)
delete(names, podname1)
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{podname2: {port2}})
deletePodOrFail(c, ns, podname2)
delete(names, podname2)
validateEndpointsOrFail(c, ns, serviceName, PortsByPodName{})
})
It("should be able to up and down services", func() {
// this test uses NodeSSHHosts that does not work if a Node only reports LegacyHostIP
SkipUnlessProviderIs(providersWithSSH...)
ns := f.Namespace.Name
numPods, servicePort := 3, 80
podNames1, svc1IP, err := startServeHostnameService(c, ns, "service1", servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
podNames2, svc2IP, err := startServeHostnameService(c, ns, "service2", servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
hosts, err := NodeSSHHosts(c)
Expect(err).NotTo(HaveOccurred())
if len(hosts) == 0 {
Failf("No ssh-able nodes")
}
host := hosts[0]
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
// Stop service 1 and make sure it is gone.
expectNoError(stopServeHostnameService(c, ns, "service1"))
expectNoError(verifyServeHostnameServiceDown(c, host, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
// Start another service and verify both are up.
podNames3, svc3IP, err := startServeHostnameService(c, ns, "service3", servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
if svc2IP == svc3IP {
Failf("VIPs conflict: %v", svc2IP)
}
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames3, svc3IP, servicePort))
expectNoError(stopServeHostnameService(c, ns, "service2"))
expectNoError(stopServeHostnameService(c, ns, "service3"))
})
It("should work after restarting kube-proxy [Disruptive]", func() {
SkipUnlessProviderIs("gce", "gke")
ns := f.Namespace.Name
numPods, servicePort := 3, 80
svc1 := "service1"
svc2 := "service2"
defer func() { expectNoError(stopServeHostnameService(c, ns, svc1)) }()
podNames1, svc1IP, err := startServeHostnameService(c, ns, svc1, servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
defer func() { expectNoError(stopServeHostnameService(c, ns, svc2)) }()
podNames2, svc2IP, err := startServeHostnameService(c, ns, svc2, servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
if svc1IP == svc2IP {
Failf("VIPs conflict: %v", svc1IP)
}
hosts, err := NodeSSHHosts(c)
Expect(err).NotTo(HaveOccurred())
if len(hosts) == 0 {
Failf("No ssh-able nodes")
}
host := hosts[0]
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
By("Restarting kube-proxy")
if err := restartKubeProxy(host); err != nil {
Failf("error restarting kube-proxy: %v", err)
}
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
By("Removing iptable rules")
result, err := SSH(`
sudo iptables -t nat -F KUBE-SERVICES || true;
sudo iptables -t nat -F KUBE-PORTALS-HOST || true;
sudo iptables -t nat -F KUBE-PORTALS-CONTAINER || true`, host, testContext.Provider)
if err != nil || result.Code != 0 {
LogSSHResult(result)
Failf("couldn't remove iptable rules: %v", err)
}
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
})
It("should work after restarting apiserver [Disruptive]", func() {
// TODO: restartApiserver doesn't work in GKE - fix it and reenable this test.
SkipUnlessProviderIs("gce")
ns := f.Namespace.Name
numPods, servicePort := 3, 80
defer func() { expectNoError(stopServeHostnameService(c, ns, "service1")) }()
podNames1, svc1IP, err := startServeHostnameService(c, ns, "service1", servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
hosts, err := NodeSSHHosts(c)
Expect(err).NotTo(HaveOccurred())
if len(hosts) == 0 {
Failf("No ssh-able nodes")
}
host := hosts[0]
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
// Restart apiserver
if err := restartApiserver(); err != nil {
Failf("error restarting apiserver: %v", err)
}
if err := waitForApiserverUp(c); err != nil {
Failf("error while waiting for apiserver up: %v", err)
}
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
// Create a new service and check if it's not reusing IP.
defer func() { expectNoError(stopServeHostnameService(c, ns, "service2")) }()
podNames2, svc2IP, err := startServeHostnameService(c, ns, "service2", servicePort, numPods)
Expect(err).NotTo(HaveOccurred())
if svc1IP == svc2IP {
Failf("VIPs conflict: %v", svc1IP)
}
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames1, svc1IP, servicePort))
expectNoError(verifyServeHostnameServiceUp(c, ns, host, podNames2, svc2IP, servicePort))
})
It("should be able to create a functioning NodePort service", func() {
serviceName := "nodeportservice-test"
ns := f.Namespace.Name
t := NewServerTest(c, ns, serviceName)
defer func() {
defer GinkgoRecover()
errs := t.Cleanup()
if len(errs) != 0 {
Failf("errors in cleanup: %v", errs)
}
}()
service := t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
By("creating service " + serviceName + " with type=NodePort in namespace " + ns)
result, err := c.Services(ns).Create(service)
Expect(err).NotTo(HaveOccurred())
defer func(ns, serviceName string) { // clean up when we're done
By("deleting service " + serviceName + " in namespace " + ns)
err := c.Services(ns).Delete(serviceName)
Expect(err).NotTo(HaveOccurred())
}(ns, serviceName)
if len(result.Spec.Ports) != 1 {
Failf("got unexpected number (%d) of Ports for NodePort service: %v", len(result.Spec.Ports), result)
}
nodePort := result.Spec.Ports[0].NodePort
if nodePort == 0 {
Failf("got unexpected nodePort (%d) on Ports[0] for NodePort service: %v", nodePort, result)
}
if !ServiceNodePortRange.Contains(nodePort) {
Failf("got unexpected (out-of-range) port for NodePort service: %v", result)
}
By("creating pod to be part of service " + serviceName)
t.CreateWebserverRC(1)
By("hitting the pod through the service's NodePort")
ip := pickNodeIP(c)
testReachable(ip, nodePort)
By("verifying the node port is locked")
hostExec := LaunchHostExecPod(f.Client, f.Namespace.Name, "hostexec")
// Loop a bit because we see transient flakes.
cmd := fmt.Sprintf(`for i in $(seq 1 10); do if ss -ant46 'sport = :%d' | grep ^LISTEN; then exit 0; fi; sleep 0.1; done; exit 1`, nodePort)
stdout, err := RunHostCmd(hostExec.Namespace, hostExec.Name, cmd)
if err != nil {
Failf("expected node port (%d) to be in use, stdout: %v", nodePort, stdout)
}
})
It("should be able to change the type and nodeport settings of a service", func() {
// requires cloud load-balancer support
SkipUnlessProviderIs("gce", "gke", "aws")
serviceName := "mutability-service-test"
t := NewServerTest(f.Client, f.Namespace.Name, serviceName)
defer func() {
defer GinkgoRecover()
errs := t.Cleanup()
if len(errs) != 0 {
Failf("errors in cleanup: %v", errs)
}
}()
service := t.BuildServiceSpec()
By("creating service " + serviceName + " with type unspecified in namespace " + t.Namespace)
service, err := t.CreateService(service)
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeClusterIP {
Failf("got unexpected Spec.Type for default service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for default service: %v", service)
}
port := service.Spec.Ports[0]
if port.NodePort != 0 {
Failf("got unexpected Spec.Ports[0].nodePort for default service: %v", service)
}
if len(service.Status.LoadBalancer.Ingress) != 0 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for default service: %v", service)
}
By("creating pod to be part of service " + t.ServiceName)
t.CreateWebserverRC(1)
By("changing service " + serviceName + " to type=NodePort")
service, err = updateService(f.Client, f.Namespace.Name, serviceName, func(s *api.Service) {
s.Spec.Type = api.ServiceTypeNodePort
})
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeNodePort {
Failf("got unexpected Spec.Type for NodePort service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for NodePort service: %v", service)
}
port = service.Spec.Ports[0]
if port.NodePort == 0 {
Failf("got unexpected Spec.Ports[0].nodePort for NodePort service: %v", service)
}
if !ServiceNodePortRange.Contains(port.NodePort) {
Failf("got unexpected (out-of-range) port for NodePort service: %v", service)
}
if len(service.Status.LoadBalancer.Ingress) != 0 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for NodePort service: %v", service)
}
By("hitting the pod through the service's NodePort")
ip := pickNodeIP(f.Client)
nodePort1 := port.NodePort // Save for later!
testReachable(ip, nodePort1)
By("changing service " + serviceName + " to type=LoadBalancer")
service, err = updateService(f.Client, f.Namespace.Name, serviceName, func(s *api.Service) {
s.Spec.Type = api.ServiceTypeLoadBalancer
})
Expect(err).NotTo(HaveOccurred())
// Wait for the load balancer to be created asynchronously
service, err = waitForLoadBalancerIngress(f.Client, serviceName, f.Namespace.Name)
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeLoadBalancer {
Failf("got unexpected Spec.Type for LoadBalancer service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for LoadBalancer service: %v", service)
}
port = service.Spec.Ports[0]
if port.NodePort != nodePort1 {
Failf("got unexpected Spec.Ports[0].nodePort for LoadBalancer service: %v", service)
}
if len(service.Status.LoadBalancer.Ingress) != 1 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for LoadBalancer service: %v", service)
}
ingress1 := service.Status.LoadBalancer.Ingress[0]
if ingress1.IP == "" && ingress1.Hostname == "" {
Failf("got unexpected Status.LoadBalancer.Ingress[0] for LoadBalancer service: %v", service)
}
By("hitting the pod through the service's NodePort")
ip = pickNodeIP(f.Client)
testReachable(ip, nodePort1)
By("hitting the pod through the service's LoadBalancer")
testLoadBalancerReachable(ingress1, 80)
By("changing service " + serviceName + ": update NodePort")
nodePort2 := 0
for i := 1; i < ServiceNodePortRange.Size; i++ {
offs1 := nodePort1 - ServiceNodePortRange.Base
offs2 := (offs1 + i) % ServiceNodePortRange.Size
nodePort2 = ServiceNodePortRange.Base + offs2
service, err = updateService(f.Client, f.Namespace.Name, serviceName, func(s *api.Service) {
s.Spec.Ports[0].NodePort = nodePort2
})
if err != nil && strings.Contains(err.Error(), "provided port is already allocated") {
Logf("nodePort %d is busy, will retry", nodePort2)
continue
}
// Otherwise err was nil or err was a real error
break
}
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeLoadBalancer {
Failf("got unexpected Spec.Type for updated-LoadBalancer service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for updated-LoadBalancer service: %v", service)
}
port = service.Spec.Ports[0]
if port.NodePort != nodePort2 {
Failf("got unexpected Spec.Ports[0].nodePort for LoadBalancer service: %v", service)
}
if len(service.Status.LoadBalancer.Ingress) != 1 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for LoadBalancer service: %v", service)
}
By("hitting the pod through the service's updated NodePort")
testReachable(ip, nodePort2)
By("checking the old NodePort is closed")
testNotReachable(ip, nodePort1)
By("hitting the pod through the service's LoadBalancer")
i := 1
for start := time.Now(); time.Since(start) < podStartTimeout; time.Sleep(3 * time.Second) {
service, err = waitForLoadBalancerIngress(f.Client, serviceName, f.Namespace.Name)
Expect(err).NotTo(HaveOccurred())
ingress2 := service.Status.LoadBalancer.Ingress[0]
if testLoadBalancerReachable(ingress2, 80) {
break
}
if i%5 == 0 {
Logf("Waiting for load-balancer changes (%v elapsed, will retry)", time.Since(start))
}
i++
}
By("updating service's port " + serviceName + " and reaching it at the same IP")
service, err = updateService(f.Client, f.Namespace.Name, serviceName, func(s *api.Service) {
s.Spec.Ports[0].Port = 19482 // chosen arbitrarily to not conflict with port 80
})
Expect(err).NotTo(HaveOccurred())
port = service.Spec.Ports[0]
if !testLoadBalancerReachable(service.Status.LoadBalancer.Ingress[0], port.Port) {
Failf("Failed to reach load balancer at original ingress after updating its port: %+v", service)
}
By("changing service " + serviceName + " back to type=ClusterIP")
service, err = updateService(f.Client, f.Namespace.Name, serviceName, func(s *api.Service) {
s.Spec.Type = api.ServiceTypeClusterIP
s.Spec.Ports[0].NodePort = 0
})
Expect(err).NotTo(HaveOccurred())
if len(service.Status.LoadBalancer.Ingress) != 0 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for NodePort service: %v", service)
}
if service.Spec.Type != api.ServiceTypeClusterIP {
Failf("got unexpected Spec.Type for back-to-ClusterIP service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for back-to-ClusterIP service: %v", service)
}
port = service.Spec.Ports[0]
if port.NodePort != 0 {
Failf("got unexpected Spec.Ports[0].nodePort for back-to-ClusterIP service: %v", service)
}
// Wait for the load balancer to be destroyed asynchronously
service, err = waitForLoadBalancerDestroy(f.Client, serviceName, f.Namespace.Name)
Expect(err).NotTo(HaveOccurred())
if len(service.Status.LoadBalancer.Ingress) != 0 {
Failf("got unexpected len(Status.LoadBalancer.Ingress) for back-to-ClusterIP service: %v", service)
}
By("checking the NodePort is closed")
ip = pickNodeIP(f.Client)
testNotReachable(ip, nodePort2)
By("checking the LoadBalancer is closed")
testLoadBalancerNotReachable(ingress1, port.Port)
})
It("should prevent NodePort collisions", func() {
baseName := "nodeport-collision-"
serviceName1 := baseName + "1"
serviceName2 := baseName + "2"
ns := f.Namespace.Name
t := NewServerTest(c, ns, serviceName1)
defer func() {
defer GinkgoRecover()
errs := t.Cleanup()
if len(errs) != 0 {
Failf("errors in cleanup: %v", errs)
}
}()
By("creating service " + serviceName1 + " with type NodePort in namespace " + ns)
service := t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
result, err := t.CreateService(service)
Expect(err).NotTo(HaveOccurred())
if result.Spec.Type != api.ServiceTypeNodePort {
Failf("got unexpected Spec.Type for new service: %v", result)
}
if len(result.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for new service: %v", result)
}
port := result.Spec.Ports[0]
if port.NodePort == 0 {
Failf("got unexpected Spec.Ports[0].nodePort for new service: %v", result)
}
By("creating service " + serviceName2 + " with conflicting NodePort")
service2 := t.BuildServiceSpec()
service2.Name = serviceName2
service2.Spec.Type = api.ServiceTypeNodePort
service2.Spec.Ports[0].NodePort = port.NodePort
result2, err := t.CreateService(service2)
if err == nil {
Failf("Created service with conflicting NodePort: %v", result2)
}
expectedErr := fmt.Sprintf("Service \"%s\" is invalid: spec.ports[0].nodePort: Invalid value: %d: provided port is already allocated",
serviceName2, port.NodePort)
Expect(fmt.Sprintf("%v", err)).To(Equal(expectedErr))
By("deleting service " + serviceName1 + " to release NodePort")
err = t.DeleteService(serviceName1)
Expect(err).NotTo(HaveOccurred())
By("creating service " + serviceName2 + " with no-longer-conflicting NodePort")
_, err = t.CreateService(service2)
Expect(err).NotTo(HaveOccurred())
})
It("should check NodePort out-of-range", func() {
serviceName := "nodeport-range-test"
ns := f.Namespace.Name
t := NewServerTest(c, ns, serviceName)
defer func() {
defer GinkgoRecover()
errs := t.Cleanup()
if len(errs) != 0 {
Failf("errors in cleanup: %v", errs)
}
}()
service := t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
By("creating service " + serviceName + " with type NodePort in namespace " + ns)
service, err := t.CreateService(service)
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeNodePort {
Failf("got unexpected Spec.Type for new service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for new service: %v", service)
}
port := service.Spec.Ports[0]
if port.NodePort == 0 {
Failf("got unexpected Spec.Ports[0].nodePort for new service: %v", service)
}
if !ServiceNodePortRange.Contains(port.NodePort) {
Failf("got unexpected (out-of-range) port for new service: %v", service)
}
outOfRangeNodePort := 0
for {
outOfRangeNodePort = 1 + rand.Intn(65535)
if !ServiceNodePortRange.Contains(outOfRangeNodePort) {
break
}
}
By(fmt.Sprintf("changing service "+serviceName+" to out-of-range NodePort %d", outOfRangeNodePort))
result, err := updateService(c, ns, serviceName, func(s *api.Service) {
s.Spec.Ports[0].NodePort = outOfRangeNodePort
})
if err == nil {
Failf("failed to prevent update of service with out-of-range NodePort: %v", result)
}
expectedErr := fmt.Sprintf("Service \"%s\" is invalid: spec.ports[0].nodePort: Invalid value: %d: provided port is not in the valid range", serviceName, outOfRangeNodePort)
Expect(fmt.Sprintf("%v", err)).To(Equal(expectedErr))
By("deleting original service " + serviceName)
err = t.DeleteService(serviceName)
Expect(err).NotTo(HaveOccurred())
By(fmt.Sprintf("creating service "+serviceName+" with out-of-range NodePort %d", outOfRangeNodePort))
service = t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
service.Spec.Ports[0].NodePort = outOfRangeNodePort
service, err = t.CreateService(service)
if err == nil {
Failf("failed to prevent create of service with out-of-range NodePort (%d): %v", outOfRangeNodePort, service)
}
Expect(fmt.Sprintf("%v", err)).To(Equal(expectedErr))
})
It("should release NodePorts on delete", func() {
serviceName := "nodeport-reuse"
ns := f.Namespace.Name
t := NewServerTest(c, ns, serviceName)
defer func() {
defer GinkgoRecover()
errs := t.Cleanup()
if len(errs) != 0 {
Failf("errors in cleanup: %v", errs)
}
}()
service := t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
By("creating service " + serviceName + " with type NodePort in namespace " + ns)
service, err := t.CreateService(service)
Expect(err).NotTo(HaveOccurred())
if service.Spec.Type != api.ServiceTypeNodePort {
Failf("got unexpected Spec.Type for new service: %v", service)
}
if len(service.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for new service: %v", service)
}
port := service.Spec.Ports[0]
if port.NodePort == 0 {
Failf("got unexpected Spec.Ports[0].nodePort for new service: %v", service)
}
if !ServiceNodePortRange.Contains(port.NodePort) {
Failf("got unexpected (out-of-range) port for new service: %v", service)
}
nodePort := port.NodePort
By("deleting original service " + serviceName)
err = t.DeleteService(serviceName)
Expect(err).NotTo(HaveOccurred())
hostExec := LaunchHostExecPod(f.Client, f.Namespace.Name, "hostexec")
cmd := fmt.Sprintf(`! ss -ant46 'sport = :%d' | tail -n +2 | grep LISTEN`, nodePort)
stdout, err := RunHostCmd(hostExec.Namespace, hostExec.Name, cmd)
if err != nil {
Failf("expected node port (%d) to not be in use, stdout: %v", nodePort, stdout)
}
By(fmt.Sprintf("creating service "+serviceName+" with same NodePort %d", nodePort))
service = t.BuildServiceSpec()
service.Spec.Type = api.ServiceTypeNodePort
service.Spec.Ports[0].NodePort = nodePort
service, err = t.CreateService(service)
Expect(err).NotTo(HaveOccurred())
})
// This test hits several load-balancer cases because LB turnup is slow.
// Flaky issue #18952
It("should serve identically named services in different namespaces on different load-balancers [Flaky]", func() {
// requires ExternalLoadBalancer
SkipUnlessProviderIs("gce", "gke", "aws")
ns1 := f.Namespace.Name
By("Building a second namespace api object")
namespacePtr, err := createTestingNS("services", c, nil)
Expect(err).NotTo(HaveOccurred())
ns2 := namespacePtr.Name
extraNamespaces = append(extraNamespaces, ns2)
serviceName := "test-svc"
servicePort := 9376
By("creating service " + serviceName + " with load balancer in namespace " + ns1)
t1 := NewServerTest(c, ns1, serviceName)
svc1 := t1.BuildServiceSpec()
svc1.Spec.Type = api.ServiceTypeLoadBalancer
svc1.Spec.Ports[0].Port = servicePort
svc1.Spec.Ports[0].TargetPort = intstr.FromInt(80)
_, err = t1.CreateService(svc1)
Expect(err).NotTo(HaveOccurred())
By("creating pod to be part of service " + serviceName + " in namespace " + ns1)
t1.CreateWebserverRC(1)
loadBalancerIP := ""
if providerIs("gce", "gke") {
By("creating a static IP")
rand.Seed(time.Now().UTC().UnixNano())
staticIPName := fmt.Sprintf("e2e-external-lb-test-%d", rand.Intn(65535))
loadBalancerIP, err = createGCEStaticIP(staticIPName)
Expect(err).NotTo(HaveOccurred())
defer func() {
// Release GCE static IP - this is not kube-managed and will not be automatically released.
deleteGCEStaticIP(staticIPName)
}()
}
By("creating service " + serviceName + " with UDP load balancer in namespace " + ns2)
t2 := NewNetcatTest(c, ns2, serviceName)
svc2 := t2.BuildServiceSpec()
svc2.Spec.Type = api.ServiceTypeLoadBalancer
svc2.Spec.Ports[0].Port = servicePort
// UDP loadbalancing is tested via test NetcatTest
svc2.Spec.Ports[0].Protocol = api.ProtocolUDP
svc2.Spec.Ports[0].TargetPort = intstr.FromInt(80)
svc2.Spec.LoadBalancerIP = loadBalancerIP
_, err = t2.CreateService(svc2)
Expect(err).NotTo(HaveOccurred())
By("creating pod to be part of service " + serviceName + " in namespace " + ns2)
t2.CreateNetcatRC(2)
ingressPoints := []string{}
svcs := []*api.Service{svc1, svc2}
for _, svc := range svcs {
namespace := svc.Namespace
lbip := svc.Spec.LoadBalancerIP
// Wait for the load balancer to be created asynchronously, which is
// currently indicated by ingress point(s) being added to the status.
result, err := waitForLoadBalancerIngress(c, serviceName, namespace)
Expect(err).NotTo(HaveOccurred())
if len(result.Status.LoadBalancer.Ingress) != 1 {
Failf("got unexpected number (%v) of ingress points for externally load balanced service: %v", result.Status.LoadBalancer.Ingress, result)
}
ingress := result.Status.LoadBalancer.Ingress[0]
if len(result.Spec.Ports) != 1 {
Failf("got unexpected len(Spec.Ports) for LoadBalancer service: %v", result)
}
if lbip != "" {
Expect(ingress.IP).To(Equal(lbip))
}
port := result.Spec.Ports[0]
if port.NodePort == 0 {
Failf("got unexpected Spec.Ports[0].nodePort for LoadBalancer service: %v", result)
}
if !ServiceNodePortRange.Contains(port.NodePort) {
Failf("got unexpected (out-of-range) port for LoadBalancer service: %v", result)
}
ing := result.Status.LoadBalancer.Ingress[0].IP
if ing == "" {
ing = result.Status.LoadBalancer.Ingress[0].Hostname
}
ingressPoints = append(ingressPoints, ing) // Save 'em to check uniqueness
if svc1.Spec.Ports[0].Protocol == api.ProtocolTCP {
By("hitting the pod through the service's NodePort")
testReachable(pickNodeIP(c), port.NodePort)
By("hitting the pod through the service's external load balancer")
testLoadBalancerReachable(ingress, servicePort)
} else {
By("hitting the pod through the service's NodePort")
testNetcatReachable(pickNodeIP(c), port.NodePort)
By("hitting the pod through the service's external load balancer")
testNetcatLoadBalancerReachable(ingress, servicePort)
}
}
validateUniqueOrFail(ingressPoints)
})
})
// updateService fetches a service, calls the update function on it,
// and then attempts to send the updated service. It retries up to 2
// times in the face of timeouts and conflicts.
func updateService(c *client.Client, namespace, serviceName string, update func(*api.Service)) (*api.Service, error) {
var service *api.Service
var err error
for i := 0; i < 3; i++ {
service, err = c.Services(namespace).Get(serviceName)
if err != nil {
return service, err
}
update(service)
service, err = c.Services(namespace).Update(service)
if !errors.IsConflict(err) && !errors.IsServerTimeout(err) {
return service, err
}
}
return service, err
}
func waitForLoadBalancerIngress(c *client.Client, serviceName, namespace string) (*api.Service, error) {
// TODO: once support ticket 21807001 is resolved, reduce this timeout back to something reasonable
const timeout = 20 * time.Minute
var service *api.Service
By(fmt.Sprintf("waiting up to %v for service %s in namespace %s to have a LoadBalancer ingress point", timeout, serviceName, namespace))
i := 1
for start := time.Now(); time.Since(start) < timeout; time.Sleep(3 * time.Second) {
service, err := c.Services(namespace).Get(serviceName)
if err != nil {
Logf("Get service failed, ignoring for 5s: %v", err)
continue
}
if len(service.Status.LoadBalancer.Ingress) > 0 {
return service, nil
}
if i%5 == 0 {
Logf("Waiting for service %s in namespace %s to have a LoadBalancer ingress point (%v)", serviceName, namespace, time.Since(start))
}
i++
}
return service, fmt.Errorf("service %s in namespace %s doesn't have a LoadBalancer ingress point after %.2f seconds", serviceName, namespace, timeout.Seconds())
}
func waitForLoadBalancerDestroy(c *client.Client, serviceName, namespace string) (*api.Service, error) {
// TODO: once support ticket 21807001 is resolved, reduce this timeout back to something reasonable
// TODO: this should actually test that the LB was released at the cloud provider
const timeout = 10 * time.Minute
var service *api.Service
By(fmt.Sprintf("waiting up to %v for service %s in namespace %s to have no LoadBalancer ingress points", timeout, serviceName, namespace))
for start := time.Now(); time.Since(start) < timeout; time.Sleep(5 * time.Second) {
service, err := c.Services(namespace).Get(serviceName)
if err != nil {
Logf("Get service failed, ignoring for 5s: %v", err)
continue
}
if len(service.Status.LoadBalancer.Ingress) == 0 {
return service, nil
}
Logf("Waiting for service %s in namespace %s to have no LoadBalancer ingress points (%v)", serviceName, namespace, time.Since(start))
}
return service, fmt.Errorf("service %s in namespace %s still has LoadBalancer ingress points after %.2f seconds", serviceName, namespace, timeout.Seconds())
}
func validateUniqueOrFail(s []string) {
By(fmt.Sprintf("validating unique: %v", s))
sort.Strings(s)
var prev string
for i, elem := range s {
if i > 0 && elem == prev {
Fail("duplicate found: " + elem)
}
prev = elem
}
}
func getContainerPortsByPodUID(endpoints *api.Endpoints) PortsByPodUID {
m := PortsByPodUID{}
for _, ss := range endpoints.Subsets {
for _, port := range ss.Ports {
for _, addr := range ss.Addresses {
containerPort := port.Port
hostPort := port.Port
// use endpoint annotations to recover the container port in a Mesos setup
// compare contrib/mesos/pkg/service/endpoints_controller.syncService
key := fmt.Sprintf("k8s.mesosphere.io/containerPort_%s_%s_%d", port.Protocol, addr.IP, hostPort)
mesosContainerPortString := endpoints.Annotations[key]
if mesosContainerPortString != "" {
var err error
containerPort, err = strconv.Atoi(mesosContainerPortString)
if err != nil {
continue
}
Logf("Mapped mesos host port %d to container port %d via annotation %s=%s", hostPort, containerPort, key, mesosContainerPortString)
}
// Logf("Found pod %v, host port %d and container port %d", addr.TargetRef.UID, hostPort, containerPort)
if _, ok := m[addr.TargetRef.UID]; !ok {
m[addr.TargetRef.UID] = make([]int, 0)
}
m[addr.TargetRef.UID] = append(m[addr.TargetRef.UID], containerPort)
}
}
}
return m
}
type PortsByPodName map[string][]int
type PortsByPodUID map[types.UID][]int