536 lines
15 KiB
Go
536 lines
15 KiB
Go
// +build integration,!no-etcd
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/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package master
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"os"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/ghodss/yaml"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/testapi"
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"k8s.io/kubernetes/pkg/api/v1"
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clienttypedv1 "k8s.io/kubernetes/pkg/client/clientset_generated/clientset/typed/core/v1"
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/test/integration"
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"k8s.io/kubernetes/test/integration/framework"
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)
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func testPrefix(t *testing.T, prefix string) {
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_, s := framework.RunAMaster(nil)
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defer s.Close()
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resp, err := http.Get(s.URL + prefix)
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if err != nil {
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t.Fatalf("unexpected error getting %s prefix: %v", prefix, err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("got status %v instead of 200 OK", resp.StatusCode)
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}
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}
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func TestAutoscalingPrefix(t *testing.T) {
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testPrefix(t, "/apis/autoscaling/")
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}
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func TestBatchPrefix(t *testing.T) {
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testPrefix(t, "/apis/batch/")
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}
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func TestAppsPrefix(t *testing.T) {
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testPrefix(t, "/apis/apps/")
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}
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func TestExtensionsPrefix(t *testing.T) {
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testPrefix(t, "/apis/extensions/")
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}
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func TestEmptyList(t *testing.T) {
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_, s := framework.RunAMaster(nil)
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defer s.Close()
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u := s.URL + "/api/v1/namespaces/default/pods"
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resp, err := http.Get(u)
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if err != nil {
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t.Fatalf("unexpected error getting %s: %v", u, err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("got status %v instead of 200 OK", resp.StatusCode)
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}
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defer resp.Body.Close()
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data, _ := ioutil.ReadAll(resp.Body)
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decodedData := map[string]interface{}{}
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if err := json.Unmarshal(data, &decodedData); err != nil {
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t.Logf("body: %s", string(data))
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t.Fatalf("got error decoding data: %v", err)
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}
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if items, ok := decodedData["items"]; !ok {
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t.Logf("body: %s", string(data))
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t.Fatalf("missing items field in empty list (all lists should return an items field)")
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} else if items == nil {
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t.Logf("body: %s", string(data))
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t.Fatalf("nil items field from empty list (all lists should return non-nil empty items lists)")
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}
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}
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func TestWatchSucceedsWithoutArgs(t *testing.T) {
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_, s := framework.RunAMaster(nil)
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defer s.Close()
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resp, err := http.Get(s.URL + "/api/v1/namespaces?watch=1")
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if err != nil {
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t.Fatalf("unexpected error getting experimental prefix: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("got status %v instead of 200 OK", resp.StatusCode)
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}
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resp.Body.Close()
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}
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var hpaV1 string = `
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{
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"apiVersion": "autoscaling/v1",
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"kind": "HorizontalPodAutoscaler",
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"metadata": {
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"name": "test-hpa",
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"namespace": "default"
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},
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"spec": {
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"scaleTargetRef": {
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"kind": "ReplicationController",
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"name": "test-hpa",
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"namespace": "default"
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},
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"minReplicas": 1,
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"maxReplicas": 10,
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"targetCPUUtilizationPercentage": 50
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}
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}
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`
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func autoscalingPath(resource, namespace, name string) string {
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return testapi.Autoscaling.ResourcePath(resource, namespace, name)
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}
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func batchPath(resource, namespace, name string) string {
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return testapi.Batch.ResourcePath(resource, namespace, name)
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}
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func extensionsPath(resource, namespace, name string) string {
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return testapi.Extensions.ResourcePath(resource, namespace, name)
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}
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func TestAutoscalingGroupBackwardCompatibility(t *testing.T) {
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_, s := framework.RunAMaster(nil)
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defer s.Close()
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transport := http.DefaultTransport
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requests := []struct {
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verb string
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URL string
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body string
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expectedStatusCodes map[int]bool
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expectedVersion string
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}{
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{"POST", autoscalingPath("horizontalpodautoscalers", api.NamespaceDefault, ""), hpaV1, integration.Code201, ""},
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{"GET", autoscalingPath("horizontalpodautoscalers", api.NamespaceDefault, ""), "", integration.Code200, testapi.Autoscaling.GroupVersion().String()},
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{"GET", extensionsPath("horizontalpodautoscalers", api.NamespaceDefault, ""), "", integration.Code200, testapi.Extensions.GroupVersion().String()},
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}
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for _, r := range requests {
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bodyBytes := bytes.NewReader([]byte(r.body))
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req, err := http.NewRequest(r.verb, s.URL+r.URL, bodyBytes)
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if err != nil {
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t.Logf("case %v", r)
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t.Fatalf("unexpected error: %v", err)
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}
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func() {
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resp, err := transport.RoundTrip(req)
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defer resp.Body.Close()
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if err != nil {
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t.Logf("case %v", r)
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t.Fatalf("unexpected error: %v", err)
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}
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b, _ := ioutil.ReadAll(resp.Body)
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body := string(b)
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if _, ok := r.expectedStatusCodes[resp.StatusCode]; !ok {
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t.Logf("case %v", r)
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t.Errorf("Expected status one of %v, but got %v", r.expectedStatusCodes, resp.StatusCode)
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t.Errorf("Body: %v", body)
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}
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if !strings.Contains(body, "\"apiVersion\":\""+r.expectedVersion) {
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t.Logf("case %v", r)
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t.Errorf("Expected version %v, got body %v", r.expectedVersion, body)
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}
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}()
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}
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}
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func TestAccept(t *testing.T) {
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_, s := framework.RunAMaster(nil)
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defer s.Close()
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resp, err := http.Get(s.URL + "/api/")
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if err != nil {
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t.Fatalf("unexpected error getting api: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("got status %v instead of 200 OK", resp.StatusCode)
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}
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body, _ := ioutil.ReadAll(resp.Body)
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if resp.Header.Get("Content-Type") != "application/json" {
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t.Errorf("unexpected content: %s", body)
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}
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if err := json.Unmarshal(body, &map[string]interface{}{}); err != nil {
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t.Fatal(err)
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}
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req, err := http.NewRequest("GET", s.URL+"/api/", nil)
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if err != nil {
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t.Fatal(err)
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}
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req.Header.Set("Accept", "application/yaml")
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resp, err = http.DefaultClient.Do(req)
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if err != nil {
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t.Fatal(err)
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}
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body, _ = ioutil.ReadAll(resp.Body)
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if resp.Header.Get("Content-Type") != "application/yaml" {
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t.Errorf("unexpected content: %s", body)
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}
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t.Logf("body: %s", body)
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if err := yaml.Unmarshal(body, &map[string]interface{}{}); err != nil {
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t.Fatal(err)
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}
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req, err = http.NewRequest("GET", s.URL+"/api/", nil)
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if err != nil {
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t.Fatal(err)
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}
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req.Header.Set("Accept", "application/json, application/yaml")
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resp, err = http.DefaultClient.Do(req)
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if err != nil {
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t.Fatal(err)
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}
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body, _ = ioutil.ReadAll(resp.Body)
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if resp.Header.Get("Content-Type") != "application/json" {
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t.Errorf("unexpected content: %s", body)
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}
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t.Logf("body: %s", body)
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if err := yaml.Unmarshal(body, &map[string]interface{}{}); err != nil {
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t.Fatal(err)
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}
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req, err = http.NewRequest("GET", s.URL+"/api/", nil)
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if err != nil {
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t.Fatal(err)
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}
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req.Header.Set("Accept", "application") // not a valid media type
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resp, err = http.DefaultClient.Do(req)
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if err != nil {
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t.Fatal(err)
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}
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if resp.StatusCode != http.StatusNotAcceptable {
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t.Errorf("unexpected error from the server")
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}
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}
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func countEndpoints(eps *api.Endpoints) int {
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count := 0
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for i := range eps.Subsets {
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count += len(eps.Subsets[i].Addresses) * len(eps.Subsets[i].Ports)
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}
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return count
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}
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func TestMasterService(t *testing.T) {
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_, s := framework.RunAMaster(framework.NewIntegrationTestMasterConfig())
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defer s.Close()
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(api.GroupName).GroupVersion}})
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err := wait.Poll(time.Second, time.Minute, func() (bool, error) {
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svcList, err := client.Core().Services(api.NamespaceDefault).List(api.ListOptions{})
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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return false, nil
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}
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found := false
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for i := range svcList.Items {
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if svcList.Items[i].Name == "kubernetes" {
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found = true
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break
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}
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}
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if found {
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ep, err := client.Core().Endpoints(api.NamespaceDefault).Get("kubernetes", metav1.GetOptions{})
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if err != nil {
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return false, nil
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}
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if countEndpoints(ep) == 0 {
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return false, fmt.Errorf("no endpoints for kubernetes service: %v", ep)
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}
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return true, nil
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}
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return false, nil
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})
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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}
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func TestServiceAlloc(t *testing.T) {
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cfg := framework.NewIntegrationTestMasterConfig()
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_, cidr, err := net.ParseCIDR("192.168.0.0/29")
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if err != nil {
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t.Fatalf("bad cidr: %v", err)
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}
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cfg.ServiceIPRange = *cidr
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_, s := framework.RunAMaster(cfg)
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defer s.Close()
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client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(api.GroupName).GroupVersion}})
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svc := func(i int) *api.Service {
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return &api.Service{
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ObjectMeta: api.ObjectMeta{
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Name: fmt.Sprintf("svc-%v", i),
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},
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Spec: api.ServiceSpec{
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Type: api.ServiceTypeClusterIP,
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Ports: []api.ServicePort{
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{Port: 80},
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},
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},
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}
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}
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// Wait until the default "kubernetes" service is created.
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if err = wait.Poll(250*time.Millisecond, time.Minute, func() (bool, error) {
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_, err := client.Core().Services(api.NamespaceDefault).Get("kubernetes", metav1.GetOptions{})
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if err != nil && !errors.IsNotFound(err) {
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return false, err
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}
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return !errors.IsNotFound(err), nil
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}); err != nil {
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t.Fatalf("creating kubernetes service timed out")
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}
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// make 5 more services to take up all IPs
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for i := 0; i < 5; i++ {
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if _, err := client.Core().Services(api.NamespaceDefault).Create(svc(i)); err != nil {
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t.Error(err)
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}
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}
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// Make another service. It will fail because we're out of cluster IPs
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if _, err := client.Core().Services(api.NamespaceDefault).Create(svc(8)); err != nil {
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if !strings.Contains(err.Error(), "range is full") {
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t.Errorf("unexpected error text: %v", err)
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}
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} else {
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svcs, err := client.Core().Services(api.NamespaceAll).List(api.ListOptions{})
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if err != nil {
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t.Fatalf("unexpected success, and error getting the services: %v", err)
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}
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allIPs := []string{}
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for _, s := range svcs.Items {
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allIPs = append(allIPs, s.Spec.ClusterIP)
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}
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t.Fatalf("unexpected creation success. The following IPs exist: %#v. It should only be possible to allocate 2 IP addresses in this cluster.\n\n%#v", allIPs, svcs)
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}
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// Delete the first service.
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if err := client.Core().Services(api.NamespaceDefault).Delete(svc(1).ObjectMeta.Name, nil); err != nil {
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t.Fatalf("got unexpected error: %v", err)
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}
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// This time creating the second service should work.
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if _, err := client.Core().Services(api.NamespaceDefault).Create(svc(8)); err != nil {
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t.Fatalf("got unexpected error: %v", err)
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}
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}
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// TestUpdateNodeObjects represents a simple version of the behavior of node checkins at steady
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// state. This test allows for easy profiling of a realistic master scenario for baseline CPU
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// in very large clusters. It is disabled by default - start a kube-apiserver and pass
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// UPDATE_NODE_APISERVER as the host value.
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func TestUpdateNodeObjects(t *testing.T) {
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server := os.Getenv("UPDATE_NODE_APISERVER")
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if len(server) == 0 {
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t.Skip("UPDATE_NODE_APISERVER is not set")
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}
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c := clienttypedv1.NewForConfigOrDie(&restclient.Config{
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QPS: 10000,
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Host: server,
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ContentConfig: restclient.ContentConfig{
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AcceptContentTypes: "application/vnd.kubernetes.protobuf",
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ContentType: "application/vnd.kubernetes.protobuf",
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},
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})
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nodes := 400
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listers := 5
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watchers := 50
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iterations := 10000
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for i := 0; i < nodes*6; i++ {
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c.Nodes().Delete(fmt.Sprintf("node-%d", i), nil)
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_, err := c.Nodes().Create(&v1.Node{
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ObjectMeta: v1.ObjectMeta{
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Name: fmt.Sprintf("node-%d", i),
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},
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})
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if err != nil {
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t.Fatal(err)
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}
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}
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for k := 0; k < listers; k++ {
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go func(lister int) {
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for i := 0; i < iterations; i++ {
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_, err := c.Nodes().List(v1.ListOptions{})
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if err != nil {
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fmt.Printf("[list:%d] error after %d: %v\n", lister, i, err)
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break
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}
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time.Sleep(time.Duration(lister)*10*time.Millisecond + 1500*time.Millisecond)
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}
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}(k)
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}
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for k := 0; k < watchers; k++ {
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go func(lister int) {
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w, err := c.Nodes().Watch(v1.ListOptions{})
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if err != nil {
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fmt.Printf("[watch:%d] error: %v", k, err)
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return
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}
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i := 0
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for r := range w.ResultChan() {
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i++
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if _, ok := r.Object.(*v1.Node); !ok {
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fmt.Printf("[watch:%d] unexpected object after %d: %#v\n", lister, i, r)
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}
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if i%100 == 0 {
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fmt.Printf("[watch:%d] iteration %d ...\n", lister, i)
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}
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}
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fmt.Printf("[watch:%d] done\n", lister)
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}(k)
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}
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var wg sync.WaitGroup
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wg.Add(nodes - listers)
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for j := 0; j < nodes; j++ {
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go func(node int) {
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var lastCount int
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for i := 0; i < iterations; i++ {
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if i%100 == 0 {
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fmt.Printf("[%d] iteration %d ...\n", node, i)
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}
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if i%20 == 0 {
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_, err := c.Nodes().List(v1.ListOptions{})
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if err != nil {
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fmt.Printf("[%d] error after %d: %v\n", node, i, err)
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break
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}
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}
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r, err := c.Nodes().List(v1.ListOptions{
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FieldSelector: fmt.Sprintf("metadata.name=node-%d", node),
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ResourceVersion: "0",
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})
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if err != nil {
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fmt.Printf("[%d] error after %d: %v\n", node, i, err)
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break
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}
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if len(r.Items) != 1 {
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fmt.Printf("[%d] error after %d: unexpected list count\n", node, i)
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break
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}
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n, err := c.Nodes().Get(fmt.Sprintf("node-%d", node), metav1.GetOptions{})
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if err != nil {
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fmt.Printf("[%d] error after %d: %v\n", node, i, err)
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break
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}
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if len(n.Status.Conditions) != lastCount {
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fmt.Printf("[%d] worker set %d, read %d conditions\n", node, lastCount, len(n.Status.Conditions))
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break
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}
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previousCount := lastCount
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switch {
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case i%4 == 0:
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lastCount = 1
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n.Status.Conditions = []v1.NodeCondition{
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{
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|
Type: v1.NodeReady,
|
|
Status: v1.ConditionTrue,
|
|
Reason: "foo",
|
|
},
|
|
}
|
|
case i%4 == 1:
|
|
lastCount = 2
|
|
n.Status.Conditions = []v1.NodeCondition{
|
|
{
|
|
Type: v1.NodeReady,
|
|
Status: v1.ConditionFalse,
|
|
Reason: "foo",
|
|
},
|
|
{
|
|
Type: v1.NodeDiskPressure,
|
|
Status: v1.ConditionTrue,
|
|
Reason: "bar",
|
|
},
|
|
}
|
|
case i%4 == 1:
|
|
lastCount = 0
|
|
n.Status.Conditions = nil
|
|
}
|
|
if _, err := c.Nodes().UpdateStatus(n); err != nil {
|
|
if !errors.IsConflict(err) {
|
|
fmt.Printf("[%d] error after %d: %v\n", node, i, err)
|
|
break
|
|
}
|
|
lastCount = previousCount
|
|
}
|
|
}
|
|
wg.Done()
|
|
fmt.Printf("[%d] done\n", node)
|
|
}(j)
|
|
}
|
|
wg.Wait()
|
|
}
|