service

package
v1.17.1 Latest Latest
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 Go to latest Published: Jan 11, 2020 License: Apache-2.0 Imports: 37 Imported by: 35

Documentation

Index

Constants

View Source 
const (
	// RespondingTimeout is how long to wait for a service to be responding.
	RespondingTimeout = 2 * time.Minute

	// MaxNodesForEndpointsTests is the max number for testing endpoints.
	// Don't test with more than 3 nodes.
	// Many tests create an endpoint per node, in large clusters, this is
	// resource and time intensive.
	MaxNodesForEndpointsTests = 3
)
View Source 
const (
	// KubeProxyLagTimeout is the maximum time a kube-proxy daemon on a node is allowed
	// to not notice a Service update, such as type=NodePort.
	// TODO: This timeout should be O(10s), observed values are O(1m), 5m is very
	// liberal. Fix tracked in #20567.
	KubeProxyLagTimeout = 5 * time.Minute

	// KubeProxyEndpointLagTimeout is the maximum time a kube-proxy daemon on a node is allowed
	// to not notice an Endpoint update.
	KubeProxyEndpointLagTimeout = 30 * time.Second

	// LoadBalancerLagTimeoutDefault is the maximum time a load balancer is allowed to
	// not respond after creation.
	LoadBalancerLagTimeoutDefault = 2 * time.Minute

	// LoadBalancerLagTimeoutAWS is the delay between ELB creation and serving traffic
	// on AWS. A few minutes is typical, so use 10m.
	LoadBalancerLagTimeoutAWS = 10 * time.Minute

	// LoadBalancerCreateTimeoutDefault is the default time to wait for a load balancer to be created/modified.
	// TODO: once support ticket 21807001 is resolved, reduce this timeout back to something reasonable
	LoadBalancerCreateTimeoutDefault = 20 * time.Minute
	// LoadBalancerCreateTimeoutLarge is the maximum time to wait for a load balancer to be created/modified.
	LoadBalancerCreateTimeoutLarge = 2 * time.Hour

	// LoadBalancerPropagationTimeoutDefault is the default time to wait for pods to
	// be targeted by load balancers.
	LoadBalancerPropagationTimeoutDefault = 10 * time.Minute

	// LoadBalancerCleanupTimeout is the time required by the loadbalancer to cleanup, proportional to numApps/Ing.
	// Bring the cleanup timeout back down to 5m once b/33588344 is resolved.
	LoadBalancerCleanupTimeout = 15 * time.Minute

	// LoadBalancerPollTimeout is the time required by the loadbalancer to poll.
	// On average it takes ~6 minutes for a single backend to come online in GCE.
	LoadBalancerPollTimeout = 15 * time.Minute
	// LoadBalancerPollInterval is the interval value in which the loadbalancer polls.
	LoadBalancerPollInterval = 30 * time.Second

	// LargeClusterMinNodesNumber is the number of nodes which a large cluster consists of.
	LargeClusterMinNodesNumber = 100

	// TestTimeout is used for most polling/waiting activities
	TestTimeout = 60 * time.Second

	// AffinityTimeout is the maximum time that CheckAffinity is allowed to take; this
	// needs to be more than long enough for AffinityConfirmCount HTTP requests to
	// complete in a busy CI cluster, but shouldn't be too long since we will end up
	// waiting the entire time in the tests where affinity is not expected.
	AffinityTimeout = 2 * time.Minute

	// AffinityConfirmCount is the number of needed continuous requests to confirm that
	// affinity is enabled.
	AffinityConfirmCount = 15

	// ServiceEndpointsTimeout is the maximum time in which endpoints for the service should be created.
	ServiceEndpointsTimeout = 2 * time.Minute

	// ServiceReachabilityShortPollTimeout is the maximum time in which service must be reachable during polling.
	ServiceReachabilityShortPollTimeout = 2 * time.Minute
)

Variables

View Source 
var NodePortRange = utilnet.PortRange{Base: 30000, Size: 2768}

NodePortRange should match whatever the default/configured range is

Functions

func CheckAffinity added in v1.17.0 

func CheckAffinity(execPod *v1.Pod, serviceIP string, servicePort int, shouldHold bool) bool

CheckAffinity function tests whether the service affinity works as expected. If affinity is expected, the test will return true once affinityConfirmCount number of same response observed in a row. If affinity is not expected, the test will keep observe until different responses observed. The function will return false only in case of unexpected errors.

func CleanupServiceResources 

func CleanupServiceResources(c clientset.Interface, loadBalancerName, region, zone string)

CleanupServiceResources cleans up service Type=LoadBalancer resources.

func CreateServiceSpec 

func CreateServiceSpec(serviceName, externalName string, isHeadless bool, selector map[string]string) *v1.Service

CreateServiceSpec returns a Service object for testing.

func DescribeSvc 

func DescribeSvc(ns string)

DescribeSvc logs the output of kubectl describe svc for the given namespace

func EnableAndDisableInternalLB 

func EnableAndDisableInternalLB() (enable func(svc *v1.Service), disable func(svc *v1.Service))

EnableAndDisableInternalLB returns two functions for enabling and disabling the internal load balancer setting for the supported cloud providers (currently GCE/GKE and Azure) and empty functions for others.

func GetHTTPContent added in v1.17.0 

func GetHTTPContent(host string, port int, timeout time.Duration, url string) bytes.Buffer

GetHTTPContent returns the content of the given url by HTTP.

func GetIngressPoint 

func GetIngressPoint(ing *v1.LoadBalancerIngress) string

GetIngressPoint returns a host on which ingress serves.

func GetServiceLoadBalancerCreationTimeout 

func GetServiceLoadBalancerCreationTimeout(cs clientset.Interface) time.Duration

GetServiceLoadBalancerCreationTimeout returns a timeout value for creating a load balancer of a service.

func GetServicesProxyRequest 

func GetServicesProxyRequest(c clientset.Interface, request *restclient.Request) (*restclient.Request, error)

GetServicesProxyRequest returns a request for a service proxy.

func StartServeHostnameService 

func StartServeHostnameService(c clientset.Interface, svc *v1.Service, ns string, replicas int) ([]string, string, error)

StartServeHostnameService creates a replication controller that serves its hostname and a service on top of it.

func StopServeHostnameService 

func StopServeHostnameService(clientset clientset.Interface, ns, name string) error

StopServeHostnameService stops the given service.

func TestHTTPHealthCheckNodePort added in v1.17.0 

func TestHTTPHealthCheckNodePort(host string, port int, request string, timeout time.Duration, expectSucceed bool, threshold int) error

TestHTTPHealthCheckNodePort tests a HTTP connection by the given request to the given host and port.

func TestNotReachableHTTP added in v1.17.0 

func TestNotReachableHTTP(host string, port int, timeout time.Duration)

TestNotReachableHTTP tests that a HTTP request doesn't connect to the given host and port.

func TestNotReachableUDP added in v1.17.0 

func TestNotReachableUDP(host string, port int, timeout time.Duration)

TestNotReachableUDP tests that the given host doesn't serve UDP on the given port.

func TestReachableHTTP added in v1.17.0 

func TestReachableHTTP(host string, port int, timeout time.Duration)

TestReachableHTTP tests that the given host serves HTTP on the given port.

func TestReachableHTTPWithRetriableErrorCodes added in v1.17.0 

func TestReachableHTTPWithRetriableErrorCodes(host string, port int, retriableErrCodes []int, timeout time.Duration)

TestReachableHTTPWithRetriableErrorCodes tests that the given host serves HTTP on the given port with the given retriableErrCodes.

func TestReachableUDP added in v1.17.0 

func TestReachableUDP(host string, port int, timeout time.Duration)

TestReachableUDP tests that the given host serves UDP on the given port.

func TestRejectedHTTP added in v1.17.0 

func TestRejectedHTTP(host string, port int, timeout time.Duration)

TestRejectedHTTP tests that the given host rejects a HTTP request on the given port.

func TestRejectedUDP added in v1.17.0 

func TestRejectedUDP(host string, port int, timeout time.Duration)

TestRejectedUDP tests that the given host rejects a UDP request on the given port.

func UpdateService 

func UpdateService(c clientset.Interface, namespace, serviceName string, update func(*v1.Service)) (*v1.Service, error)

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 VerifyServeHostnameServiceDown 

func VerifyServeHostnameServiceDown(c clientset.Interface, host string, serviceIP string, servicePort int) error

VerifyServeHostnameServiceDown verifies that the given service isn't served.

func VerifyServeHostnameServiceUp 

func VerifyServeHostnameServiceUp(c clientset.Interface, ns, host string, expectedPods []string, serviceIP string, servicePort int) error

VerifyServeHostnameServiceUp wgets the given serviceIP:servicePort from the given host and from within a pod. The host is expected to be an SSH-able node in the cluster. Each pod in the service is expected to echo its name. These names are compared with the given expectedPods list after a sort | uniq.

func WaitForServiceDeletedWithFinalizer 

func WaitForServiceDeletedWithFinalizer(cs clientset.Interface, namespace, name string)

WaitForServiceDeletedWithFinalizer waits for the service with finalizer to be deleted.

func WaitForServiceResponding 

func WaitForServiceResponding(c clientset.Interface, ns, name string) error

WaitForServiceResponding waits for the service to be responding.

func WaitForServiceUpdatedWithFinalizer 

func WaitForServiceUpdatedWithFinalizer(cs clientset.Interface, namespace, name string, hasFinalizer bool)

WaitForServiceUpdatedWithFinalizer waits for the service to be updated to have or don't have a finalizer.

Types

type TestFixture 

type TestFixture struct {
	ServiceName string
	Namespace   string
	Client      clientset.Interface

	TestID string
	Labels map[string]string

	Name  string
	Image string
	// contains filtered or unexported fields
}

TestFixture is a simple helper class to avoid too much boilerplate in tests

func NewServerTest 

func NewServerTest(client clientset.Interface, namespace string, serviceName string) *TestFixture

NewServerTest creates a new TestFixture for the tests.

func (*TestFixture) BuildServiceSpec 

func (t *TestFixture) BuildServiceSpec() *v1.Service

BuildServiceSpec builds default config for a service (which can then be changed)

func (*TestFixture) Cleanup 

func (t *TestFixture) Cleanup() []error

Cleanup cleans all ReplicationControllers and Services which this object holds.

func (*TestFixture) CreateRC 

func (t *TestFixture) CreateRC(rc *v1.ReplicationController) (*v1.ReplicationController, error)

CreateRC creates a replication controller and records it for cleanup.

func (*TestFixture) CreateService 

func (t *TestFixture) CreateService(service *v1.Service) (*v1.Service, error)

CreateService creates a service, and record it for cleanup

func (*TestFixture) DeleteService 

func (t *TestFixture) DeleteService(serviceName string) error

DeleteService deletes a service, and remove it from the cleanup list

type TestJig 

type TestJig struct {
	Client    clientset.Interface
	Namespace string
	Name      string
	ID        string
	Labels    map[string]string
}

TestJig is a test jig to help service testing.

func NewTestJig 

func NewTestJig(client clientset.Interface, namespace, name string) *TestJig

NewTestJig allocates and inits a new TestJig.

func (*TestJig) AddRCAntiAffinity 

func (j *TestJig) AddRCAntiAffinity(rc *v1.ReplicationController)

AddRCAntiAffinity adds AntiAffinity to the given ReplicationController.

func (*TestJig) ChangeServiceNodePort added in v1.17.0 

func (j *TestJig) ChangeServiceNodePort(initial int) (*v1.Service, error)

ChangeServiceNodePort changes node ports of the given service.

func (*TestJig) ChangeServiceType 

func (j *TestJig) ChangeServiceType(newType v1.ServiceType, timeout time.Duration) error

ChangeServiceType updates the given service's ServiceType to the given newType.

func (*TestJig) CheckServiceReachability 

func (j *TestJig) CheckServiceReachability(svc *v1.Service, pod *v1.Pod) error

CheckServiceReachability ensures that request are served by the services. Only supports Services with type ClusterIP, NodePort and ExternalName.

func (*TestJig) CreateExternalNameService added in v1.17.0 

func (j *TestJig) CreateExternalNameService(tweak func(svc *v1.Service)) (*v1.Service, error)

CreateExternalNameService creates a new ExternalName type Service based on the j's defaults. Callers can provide a function to tweak the Service object before it is created.

func (*TestJig) CreateLoadBalancerService 

func (j *TestJig) CreateLoadBalancerService(timeout time.Duration, tweak func(svc *v1.Service)) (*v1.Service, error)

CreateLoadBalancerService creates a loadbalancer service and waits for it to acquire an ingress IP.

func (*TestJig) CreateOnlyLocalLoadBalancerService 

func (j *TestJig) CreateOnlyLocalLoadBalancerService(timeout time.Duration, createPod bool,
	tweak func(svc *v1.Service)) (*v1.Service, error)

CreateOnlyLocalLoadBalancerService creates a loadbalancer service with ExternalTrafficPolicy set to Local and waits for it to acquire an ingress IP. If createPod is true, it also creates an RC with 1 replica of the standard netexec container used everywhere in this test.

func (*TestJig) CreateOnlyLocalNodePortService 

func (j *TestJig) CreateOnlyLocalNodePortService(createPod bool) (*v1.Service, error)

CreateOnlyLocalNodePortService creates a NodePort service with ExternalTrafficPolicy set to Local and sanity checks its nodePort. If createPod is true, it also creates an RC with 1 replica of the standard netexec container used everywhere in this test.

func (*TestJig) CreatePDB added in v1.17.0 

func (j *TestJig) CreatePDB(rc *v1.ReplicationController) (*policyv1beta1.PodDisruptionBudget, error)

CreatePDB returns a PodDisruptionBudget for the given ReplicationController, or returns an error if a PodDisruptionBudget isn't ready

func (*TestJig) CreateServicePods 

func (j *TestJig) CreateServicePods(replica int) error

CreateServicePods creates a replication controller with the label same as service. Service listens to HTTP.

func (*TestJig) CreateTCPService added in v1.17.0 

func (j *TestJig) CreateTCPService(tweak func(svc *v1.Service)) (*v1.Service, error)

CreateTCPService creates a new TCP Service based on the j's defaults. Callers can provide a function to tweak the Service object before it is created.

func (*TestJig) CreateTCPServiceWithPort 

func (j *TestJig) CreateTCPServiceWithPort(tweak func(svc *v1.Service), port int32) (*v1.Service, error)

CreateTCPServiceWithPort creates a new TCP Service with given port based on the j's defaults. Callers can provide a function to tweak the Service object before it is created.

func (*TestJig) CreateTCPUDPServicePods added in v1.17.0 

func (j *TestJig) CreateTCPUDPServicePods(replica int) error

CreateTCPUDPServicePods creates a replication controller with the label same as service. Service listens to TCP and UDP.

func (*TestJig) CreateUDPService added in v1.17.0 

func (j *TestJig) CreateUDPService(tweak func(svc *v1.Service)) (*v1.Service, error)

CreateUDPService creates a new UDP Service based on the j's defaults. Callers can provide a function to tweak the Service object before it is created.

func (*TestJig) GetEndpointNodeNames added in v1.17.0 

func (j *TestJig) GetEndpointNodeNames() (sets.String, error)

GetEndpointNodeNames returns a string set of node names on which the endpoints of the given Service are running.

func (*TestJig) GetEndpointNodes 

func (j *TestJig) GetEndpointNodes() (map[string][]string, error)

GetEndpointNodes returns a map of nodenames:external-ip on which the endpoints of the Service are running.

func (*TestJig) Run added in v1.17.0 

func (j *TestJig) Run(tweak func(rc *v1.ReplicationController)) (*v1.ReplicationController, error)

Run creates a ReplicationController and Pod(s) and waits for the Pod(s) to be running. Callers can provide a function to tweak the RC object before it is created.

func (*TestJig) Scale 

func (j *TestJig) Scale(replicas int) error

Scale scales pods to the given replicas

func (*TestJig) UpdateService 

func (j *TestJig) UpdateService(update func(*v1.Service)) (*v1.Service, error)

UpdateService fetches a service, calls the update function on it, and then attempts to send the updated service. It tries up to 3 times in the face of timeouts and conflicts.

func (*TestJig) WaitForAvailableEndpoint 

func (j *TestJig) WaitForAvailableEndpoint(timeout time.Duration) error

WaitForAvailableEndpoint waits for at least 1 endpoint to be available till timeout

func (*TestJig) WaitForEndpointOnNode 

func (j *TestJig) WaitForEndpointOnNode(nodeName string) error

WaitForEndpointOnNode waits for a service endpoint on the given node.

func (*TestJig) WaitForLoadBalancer added in v1.17.0 

func (j *TestJig) WaitForLoadBalancer(timeout time.Duration) (*v1.Service, error)

WaitForLoadBalancer waits the given service to have a LoadBalancer, or returns an error after the given timeout

func (*TestJig) WaitForLoadBalancerDestroy added in v1.17.0 

func (j *TestJig) WaitForLoadBalancerDestroy(ip string, port int, timeout time.Duration) (*v1.Service, error)

WaitForLoadBalancerDestroy waits the given service to destroy a LoadBalancer, or returns an error after the given timeout

func (*TestJig) WaitForNewIngressIP added in v1.17.0 

func (j *TestJig) WaitForNewIngressIP(existingIP string, timeout time.Duration) (*v1.Service, error)

WaitForNewIngressIP waits for the given service to get a new ingress IP, or returns an error after the given timeout

type UDPPokeParams added in v1.17.0 

type UDPPokeParams struct {
	Timeout  time.Duration
	Response string
}

UDPPokeParams is a struct for UDP poke parameters.

type UDPPokeResult added in v1.17.0 

type UDPPokeResult struct {
	Status   UDPPokeStatus
	Error    error  // if there was any error
	Response []byte // if code != 0
}

UDPPokeResult is a struct for UDP poke result.

type UDPPokeStatus added in v1.17.0 

type UDPPokeStatus string

UDPPokeStatus is string for representing UDP poke status. 

const (
	// UDPSuccess is UDP poke status which is success.
	UDPSuccess UDPPokeStatus = "Success"
	// UDPError is UDP poke status which is error.
	UDPError UDPPokeStatus = "UnknownError"
	// UDPTimeout is UDP poke status which is timeout.
	UDPTimeout UDPPokeStatus = "TimedOut"
	// UDPRefused is UDP poke status which is connection refused.
	UDPRefused UDPPokeStatus = "ConnectionRefused"
	// UDPBadResponse is UDP poke status which is bad response.
	UDPBadResponse UDPPokeStatus = "BadResponse"
)

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