mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-24 22:10:23 +00:00
312 lines
9.9 KiB
Go
312 lines
9.9 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
This soak tests places a specified number of pods on each node and then
|
|
repeatedly sends queries to a service running on these pods via
|
|
a service.
|
|
*/
|
|
|
|
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/golang/glog"
|
|
"k8s.io/apimachinery/pkg/api/errors"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/util/intstr"
|
|
restclient "k8s.io/client-go/rest"
|
|
api "k8s.io/kubernetes/pkg/apis/core"
|
|
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
|
|
"k8s.io/kubernetes/test/e2e/framework"
|
|
)
|
|
|
|
var (
|
|
queriesAverage = flag.Int("queries", 100, "Number of hostname queries to make in each iteration per pod on average")
|
|
podsPerNode = flag.Int("pods_per_node", 1, "Number of serve_hostname pods per node")
|
|
upTo = flag.Int("up_to", 1, "Number of iterations or -1 for no limit")
|
|
maxPar = flag.Int("max_in_flight", 100, "Maximum number of queries in flight")
|
|
)
|
|
|
|
const (
|
|
deleteTimeout = 2 * time.Minute
|
|
endpointTimeout = 5 * time.Minute
|
|
nodeListTimeout = 2 * time.Minute
|
|
podCreateTimeout = 2 * time.Minute
|
|
podStartTimeout = 30 * time.Minute
|
|
serviceCreateTimeout = 2 * time.Minute
|
|
namespaceDeleteTimeout = 5 * time.Minute
|
|
)
|
|
|
|
func main() {
|
|
flag.Parse()
|
|
|
|
glog.Infof("Starting cauldron soak test with queries=%d podsPerNode=%d upTo=%d maxPar=%d",
|
|
*queriesAverage, *podsPerNode, *upTo, *maxPar)
|
|
|
|
cc, err := restclient.InClusterConfig()
|
|
if err != nil {
|
|
glog.Fatalf("Failed to make client: %v", err)
|
|
}
|
|
|
|
client, err := clientset.NewForConfig(cc)
|
|
if err != nil {
|
|
glog.Fatalf("Failed to make client: %v", err)
|
|
}
|
|
|
|
var nodes *api.NodeList
|
|
for start := time.Now(); time.Since(start) < nodeListTimeout; time.Sleep(2 * time.Second) {
|
|
nodes, err = client.Core().Nodes().List(metav1.ListOptions{})
|
|
if err == nil {
|
|
break
|
|
}
|
|
glog.Warningf("Failed to list nodes: %v", err)
|
|
}
|
|
if err != nil {
|
|
glog.Fatalf("Giving up trying to list nodes: %v", err)
|
|
}
|
|
|
|
if len(nodes.Items) == 0 {
|
|
glog.Fatalf("Failed to find any nodes.")
|
|
}
|
|
|
|
glog.Infof("Found %d nodes on this cluster:", len(nodes.Items))
|
|
for i, node := range nodes.Items {
|
|
glog.Infof("%d: %s", i, node.Name)
|
|
}
|
|
|
|
queries := *queriesAverage * len(nodes.Items) * *podsPerNode
|
|
|
|
// Create a uniquely named namespace.
|
|
got, err := client.Core().Namespaces().Create(&api.Namespace{ObjectMeta: metav1.ObjectMeta{GenerateName: "serve-hostnames-"}})
|
|
if err != nil {
|
|
glog.Fatalf("Failed to create namespace: %v", err)
|
|
}
|
|
ns := got.Name
|
|
defer func(ns string) {
|
|
if err := client.Core().Namespaces().Delete(ns, nil); err != nil {
|
|
glog.Warningf("Failed to delete namespace ns: %e", ns, err)
|
|
} else {
|
|
// wait until the namespace disappears
|
|
for i := 0; i < int(namespaceDeleteTimeout/time.Second); i++ {
|
|
if _, err := client.Core().Namespaces().Get(ns, metav1.GetOptions{}); err != nil {
|
|
if errors.IsNotFound(err) {
|
|
return
|
|
}
|
|
}
|
|
time.Sleep(time.Second)
|
|
}
|
|
}
|
|
}(ns)
|
|
glog.Infof("Created namespace %s", ns)
|
|
|
|
// Create a service for these pods.
|
|
glog.Infof("Creating service %s/serve-hostnames", ns)
|
|
// Make several attempts to create a service.
|
|
var svc *api.Service
|
|
for start := time.Now(); time.Since(start) < serviceCreateTimeout; time.Sleep(2 * time.Second) {
|
|
t := time.Now()
|
|
svc, err = client.Core().Services(ns).Create(&api.Service{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: "serve-hostnames",
|
|
Labels: map[string]string{
|
|
"name": "serve-hostname",
|
|
},
|
|
},
|
|
Spec: api.ServiceSpec{
|
|
Ports: []api.ServicePort{{
|
|
Protocol: "TCP",
|
|
Port: 9376,
|
|
TargetPort: intstr.FromInt(9376),
|
|
}},
|
|
Selector: map[string]string{
|
|
"name": "serve-hostname",
|
|
},
|
|
},
|
|
})
|
|
glog.V(4).Infof("Service create %s/server-hostnames took %v", ns, time.Since(t))
|
|
if err == nil {
|
|
break
|
|
}
|
|
glog.Warningf("After %v failed to create service %s/serve-hostnames: %v", time.Since(start), ns, err)
|
|
}
|
|
if err != nil {
|
|
glog.Warningf("Unable to create service %s/%s: %v", ns, svc.Name, err)
|
|
return
|
|
}
|
|
// Clean up service
|
|
defer func() {
|
|
glog.Infof("Cleaning up service %s/serve-hostnames", ns)
|
|
// Make several attempts to delete the service.
|
|
for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
|
|
if err := client.Core().Services(ns).Delete(svc.Name, nil); err == nil {
|
|
return
|
|
}
|
|
glog.Warningf("After %v unable to delete service %s/%s: %v", time.Since(start), ns, svc.Name, err)
|
|
}
|
|
}()
|
|
|
|
// Put serve-hostname pods on each node.
|
|
podNames := []string{}
|
|
for i, node := range nodes.Items {
|
|
for j := 0; j < *podsPerNode; j++ {
|
|
podName := fmt.Sprintf("serve-hostname-%d-%d", i, j)
|
|
podNames = append(podNames, podName)
|
|
// Make several attempts
|
|
for start := time.Now(); time.Since(start) < podCreateTimeout; time.Sleep(2 * time.Second) {
|
|
glog.Infof("Creating pod %s/%s on node %s", ns, podName, node.Name)
|
|
t := time.Now()
|
|
_, err = client.Core().Pods(ns).Create(&api.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{
|
|
"name": "serve-hostname",
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: "serve-hostname",
|
|
Image: framework.ServeHostnameImage,
|
|
Ports: []api.ContainerPort{{ContainerPort: 9376}},
|
|
},
|
|
},
|
|
NodeName: node.Name,
|
|
},
|
|
})
|
|
glog.V(4).Infof("Pod create %s/%s request took %v", ns, podName, time.Since(t))
|
|
if err == nil {
|
|
break
|
|
}
|
|
glog.Warningf("After %s failed to create pod %s/%s: %v", time.Since(start), ns, podName, err)
|
|
}
|
|
if err != nil {
|
|
glog.Warningf("Failed to create pod %s/%s: %v", ns, podName, err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
// Clean up the pods
|
|
defer func() {
|
|
glog.Info("Cleaning up pods")
|
|
// Make several attempts to delete the pods.
|
|
for _, podName := range podNames {
|
|
for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
|
|
if err = client.Core().Pods(ns).Delete(podName, nil); err == nil {
|
|
break
|
|
}
|
|
glog.Warningf("After %v failed to delete pod %s/%s: %v", time.Since(start), ns, podName, err)
|
|
}
|
|
}
|
|
}()
|
|
|
|
glog.Info("Waiting for the serve-hostname pods to be ready")
|
|
for _, podName := range podNames {
|
|
var pod *api.Pod
|
|
for start := time.Now(); time.Since(start) < podStartTimeout; time.Sleep(5 * time.Second) {
|
|
pod, err = client.Core().Pods(ns).Get(podName, metav1.GetOptions{})
|
|
if err != nil {
|
|
glog.Warningf("Get pod %s/%s failed, ignoring for %v: %v", ns, podName, err, podStartTimeout)
|
|
continue
|
|
}
|
|
if pod.Status.Phase == api.PodRunning {
|
|
break
|
|
}
|
|
}
|
|
if pod.Status.Phase != api.PodRunning {
|
|
glog.Warningf("Gave up waiting on pod %s/%s to be running (saw %v)", ns, podName, pod.Status.Phase)
|
|
} else {
|
|
glog.Infof("%s/%s is running", ns, podName)
|
|
}
|
|
}
|
|
|
|
// Wait for the endpoints to propagate.
|
|
for start := time.Now(); time.Since(start) < endpointTimeout; time.Sleep(10 * time.Second) {
|
|
_, err = http.Get(fmt.Sprintf("http://serve-hostnames.%s:9376", ns))
|
|
if err == nil {
|
|
break
|
|
}
|
|
glog.Infof("After %v while making a request got error %v", time.Since(start), err)
|
|
}
|
|
if err != nil {
|
|
glog.Errorf("Failed to get a response from service: %v", err)
|
|
}
|
|
|
|
// Repeatedly make requests.
|
|
for iteration := 0; iteration != *upTo; iteration++ {
|
|
responseChan := make(chan string, queries)
|
|
// Use a channel of size *maxPar to throttle the number
|
|
// of in-flight requests to avoid overloading the service.
|
|
inFlight := make(chan struct{}, *maxPar)
|
|
start := time.Now()
|
|
for q := 0; q < queries; q++ {
|
|
go func(i int, query int) {
|
|
inFlight <- struct{}{}
|
|
t := time.Now()
|
|
resp, err := http.Get(fmt.Sprintf("http://serve-hostnames.%s:9376", ns))
|
|
glog.V(4).Infof("Call to serve-hostnames in namespace %s took %v", ns, time.Since(t))
|
|
if err != nil {
|
|
glog.Warningf("Call failed during iteration %d query %d : %v", i, query, err)
|
|
// If the query failed return a string which starts with a character
|
|
// that can't be part of a hostname.
|
|
responseChan <- fmt.Sprintf("!failed in iteration %d to issue query %d: %v", i, query, err)
|
|
} else {
|
|
defer resp.Body.Close()
|
|
hostname, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
responseChan <- fmt.Sprintf("!failed in iteration %d to read body of response: %v", i, err)
|
|
} else {
|
|
responseChan <- string(hostname)
|
|
}
|
|
}
|
|
<-inFlight
|
|
}(iteration, q)
|
|
}
|
|
responses := make(map[string]int, *podsPerNode*len(nodes.Items))
|
|
missing := 0
|
|
for q := 0; q < queries; q++ {
|
|
r := <-responseChan
|
|
glog.V(4).Infof("Got response from %s", r)
|
|
responses[r]++
|
|
// If the returned hostname starts with '!' then it indicates
|
|
// an error response.
|
|
if len(r) > 0 && r[0] == '!' {
|
|
glog.V(3).Infof("Got response %s", r)
|
|
missing++
|
|
}
|
|
}
|
|
if missing > 0 {
|
|
glog.Warningf("Missing %d responses out of %d", missing, queries)
|
|
}
|
|
// Report any nodes that did not respond.
|
|
for n, node := range nodes.Items {
|
|
for i := 0; i < *podsPerNode; i++ {
|
|
name := fmt.Sprintf("serve-hostname-%d-%d", n, i)
|
|
if _, ok := responses[name]; !ok {
|
|
glog.Warningf("No response from pod %s on node %s at iteration %d", name, node.Name, iteration)
|
|
}
|
|
}
|
|
}
|
|
glog.Infof("Iteration %d took %v for %d queries (%.2f QPS) with %d missing",
|
|
iteration, time.Since(start), queries-missing, float64(queries-missing)/time.Since(start).Seconds(), missing)
|
|
}
|
|
}
|