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cluster-loader.go
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cluster-loader.go
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// Package remote implements remote cluster loader.
// ref. https://github.com/kubernetes/perf-tests/tree/master/clusterloader2
// ref. https://github.com/kubernetes/perf-tests/tree/master/clusterloader2/testing/overrides
package remote
import (
"context"
"errors"
"fmt"
"io"
"io/ioutil"
"reflect"
"strings"
"time"
cluster_loader "github.com/aws/aws-k8s-tester/eks/cluster-loader"
eks_tester "github.com/aws/aws-k8s-tester/eks/tester"
"github.com/aws/aws-k8s-tester/eksconfig"
"github.com/aws/aws-k8s-tester/pkg/aws/cw"
aws_ecr "github.com/aws/aws-k8s-tester/pkg/aws/ecr"
aws_s3 "github.com/aws/aws-k8s-tester/pkg/aws/s3"
k8s_client "github.com/aws/aws-k8s-tester/pkg/k8s-client"
"github.com/aws/aws-k8s-tester/pkg/timeutil"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/cloudwatch"
"github.com/aws/aws-sdk-go/service/cloudwatch/cloudwatchiface"
"github.com/aws/aws-sdk-go/service/ecr/ecriface"
"github.com/aws/aws-sdk-go/service/s3/s3iface"
"github.com/dustin/go-humanize"
"go.uber.org/zap"
batchv1 "k8s.io/api/batch/v1"
v1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
apierrs "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/yaml"
)
// Config defines cluster loader configuration.
type Config struct {
Logger *zap.Logger
LogWriter io.Writer
Stopc chan struct{}
EKSConfig *eksconfig.Config
K8SClient k8s_client.EKS
S3API s3iface.S3API
CWAPI cloudwatchiface.CloudWatchAPI
ECRAPI ecriface.ECRAPI
}
var pkgName = reflect.TypeOf(tester{}).PkgPath()
func (ts *tester) Name() string { return pkgName }
func New(cfg Config) eks_tester.Tester {
cfg.Logger.Info("creating tester", zap.String("tester", pkgName))
return &tester{cfg: cfg}
}
type tester struct {
cfg Config
ecrImage string
}
func (ts *tester) Create() (err error) {
if !ts.cfg.EKSConfig.IsEnabledAddOnClusterLoaderRemote() {
ts.cfg.Logger.Info("skipping tester.Create", zap.String("tester", pkgName))
return nil
}
if ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Created {
ts.cfg.Logger.Info("skipping tester.Create", zap.String("tester", pkgName))
return nil
}
ts.cfg.Logger.Info("starting tester.Create", zap.String("tester", pkgName))
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Created = true
ts.cfg.EKSConfig.Sync()
createStart := time.Now()
defer func() {
createEnd := time.Now()
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.TimeFrameCreate = timeutil.NewTimeFrame(createStart, createEnd)
ts.cfg.EKSConfig.Sync()
}()
if ts.ecrImage, _, err = aws_ecr.Check(
ts.cfg.Logger,
ts.cfg.ECRAPI,
ts.cfg.EKSConfig.Partition,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.RepositoryAccountID,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.RepositoryRegion,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.RepositoryName,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.RepositoryImageTag,
); err != nil {
return err
}
if err = k8s_client.CreateNamespace(
ts.cfg.Logger,
ts.cfg.K8SClient.KubernetesClientSet(),
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
); err != nil {
return err
}
if err = ts.createServiceAccount(); err != nil {
return err
}
if err = ts.createRBACClusterRole(); err != nil {
return err
}
if err = ts.createRBACClusterRoleBinding(); err != nil {
return err
}
if err = ts.createConfigMap(); err != nil {
return err
}
if err = ts.createJob(); err != nil {
return err
}
timeout := 5*time.Minute + 5*time.Minute*time.Duration(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Runs)
ctx, cancel := context.WithTimeout(context.Background(), timeout)
var pods []v1.Pod
_, pods, err = k8s_client.WaitForJobCompletes(
ctx,
ts.cfg.Logger,
ts.cfg.LogWriter,
ts.cfg.Stopc,
ts.cfg.K8SClient,
time.Minute,
10*time.Second,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
clusterLoaderJobName,
1,
)
cancel()
if err != nil {
return err
}
fmt.Fprintf(ts.cfg.LogWriter, "\n")
for _, item := range pods {
fmt.Fprintf(ts.cfg.LogWriter, "Job Pod %q: %q\n", item.Name, item.Status.Phase)
}
fmt.Fprintf(ts.cfg.LogWriter, "\n")
if err = ts.checkResults(); err == nil {
return err
}
if err = ts.publishResults(); err != nil {
return err
}
ts.cfg.EKSConfig.Sync()
return nil
}
func (ts *tester) Delete() (err error) {
if !ts.cfg.EKSConfig.IsEnabledAddOnClusterLoaderRemote() {
ts.cfg.Logger.Info("skipping tester.Delete", zap.String("tester", pkgName))
return nil
}
if !ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Created {
ts.cfg.Logger.Info("skipping tester.Delete", zap.String("tester", pkgName))
return nil
}
ts.cfg.Logger.Info("starting tester.Delete", zap.String("tester", pkgName))
deleteStart := time.Now()
defer func() {
deleteEnd := time.Now()
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.TimeFrameDelete = timeutil.NewTimeFrame(deleteStart, deleteEnd)
ts.cfg.EKSConfig.Sync()
}()
var errs []string
if err := ts.deleteJob(); err != nil {
errs = append(errs, err.Error())
}
time.Sleep(2 * time.Minute)
if err := ts.deleteConfigMap(); err != nil {
errs = append(errs, err.Error())
}
if err := ts.deleteRBACClusterRoleBinding(); err != nil {
errs = append(errs, err.Error())
}
if err := ts.deleteRBACClusterRole(); err != nil {
errs = append(errs, err.Error())
}
if err := ts.deleteServiceAccount(); err != nil {
errs = append(errs, err.Error())
}
if err := k8s_client.DeleteNamespaceAndWait(
ts.cfg.Logger,
ts.cfg.K8SClient.KubernetesClientSet(),
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
k8s_client.DefaultNamespaceDeletionInterval,
k8s_client.DefaultNamespaceDeletionTimeout,
k8s_client.WithForceDelete(true),
); err != nil {
errs = append(errs, fmt.Sprintf("failed to delete cluster loader namespace (%v)", err))
}
if len(errs) > 0 {
return errors.New(strings.Join(errs, ", "))
}
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Created = false
ts.cfg.EKSConfig.Sync()
return nil
}
const (
clusterLoaderServiceAccountName = "cluster-loader-remote-service-account"
clusterLoaderRBACRoleName = "cluster-loader-remote-rbac-role"
clusterLoaderRBACClusterRoleBindingName = "cluster-loader-remote-rbac-role-binding"
clusterLoaderKubeConfigConfigMapName = "cluster-loader-remote-kubeconfig-configmap"
clusterLoaderKubeConfigConfigMapFileName = "cluster-loader-remote-kubeconfig-configmap.yaml"
clusterLoaderAppName = "cluster-loader-remote-app"
clusterLoaderJobName = "cluster-loader-remote-job"
)
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) createServiceAccount() error {
ts.cfg.Logger.Info("creating cluster loader ServiceAccount")
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
_, err := ts.cfg.K8SClient.KubernetesClientSet().
CoreV1().
ServiceAccounts(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Create(
ctx,
&v1.ServiceAccount{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ServiceAccount",
},
ObjectMeta: metav1.ObjectMeta{
Name: clusterLoaderServiceAccountName,
Namespace: ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
Labels: map[string]string{
"app.kubernetes.io/name": clusterLoaderAppName,
},
},
},
metav1.CreateOptions{},
)
cancel()
if err != nil && !apierrs.IsNotFound(err) && !strings.Contains(err.Error(), "not found") {
ts.cfg.Logger.Warn("failed to delete", zap.Error(err))
return fmt.Errorf("failed to create cluster loader ServiceAccount (%v)", err)
}
ts.cfg.Logger.Info("created cluster loader ServiceAccount")
ts.cfg.EKSConfig.Sync()
return nil
}
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) deleteServiceAccount() error {
ts.cfg.Logger.Info("deleting cluster loader ServiceAccount")
foreground := metav1.DeletePropagationForeground
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
err := ts.cfg.K8SClient.KubernetesClientSet().
CoreV1().
ServiceAccounts(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Delete(
ctx,
clusterLoaderServiceAccountName,
metav1.DeleteOptions{
GracePeriodSeconds: aws.Int64(0),
PropagationPolicy: &foreground,
},
)
cancel()
if err != nil && !apierrs.IsNotFound(err) && !strings.Contains(err.Error(), "not found") {
ts.cfg.Logger.Warn("failed to delete", zap.Error(err))
return fmt.Errorf("failed to delete cluster loader ServiceAccount (%v)", err)
}
ts.cfg.Logger.Info("deleted cluster loader ServiceAccount", zap.Error(err))
ts.cfg.EKSConfig.Sync()
return nil
}
// need RBAC, otherwise
// kubelet_node_status.go:92] Unable to register node "fake-node-000000-8pkvl" with API server: nodes "fake-node-000000-8pkvl" is forbidden: node "ip-192-168-83-61.us-west-2.compute.internal" is not allowed to modify node "fake-node-000000-8pkvl"
// ref. https://github.com/kubernetes/kubernetes/issues/47695
// ref. https://kubernetes.io/docs/reference/access-authn-authz/node
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) createRBACClusterRole() error {
ts.cfg.Logger.Info("creating cluster loader RBAC ClusterRole")
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
_, err := ts.cfg.K8SClient.KubernetesClientSet().
RbacV1().
ClusterRoles().
Create(
ctx,
&rbacv1.ClusterRole{
TypeMeta: metav1.TypeMeta{
APIVersion: "rbac.authorization.k8s.io/v1",
Kind: "ClusterRole",
},
ObjectMeta: metav1.ObjectMeta{
Name: clusterLoaderRBACRoleName,
Namespace: "default",
Labels: map[string]string{
"app.kubernetes.io/name": clusterLoaderAppName,
},
},
Rules: []rbacv1.PolicyRule{
{ // TODO: make it more restrictive
APIGroups: []string{
"*",
},
Resources: []string{
"*"},
Verbs: []string{
"*",
},
},
},
},
metav1.CreateOptions{},
)
cancel()
if err != nil {
return fmt.Errorf("failed to create cluster loader RBAC ClusterRole (%v)", err)
}
ts.cfg.Logger.Info("created cluster loader RBAC ClusterRole")
ts.cfg.EKSConfig.Sync()
return nil
}
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) deleteRBACClusterRole() error {
ts.cfg.Logger.Info("deleting cluster loader RBAC ClusterRole")
foreground := metav1.DeletePropagationForeground
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
err := ts.cfg.K8SClient.KubernetesClientSet().
RbacV1().
ClusterRoles().
Delete(
ctx,
clusterLoaderRBACRoleName,
metav1.DeleteOptions{
GracePeriodSeconds: aws.Int64(0),
PropagationPolicy: &foreground,
},
)
cancel()
if err != nil && !apierrs.IsNotFound(err) && !strings.Contains(err.Error(), "not found") {
ts.cfg.Logger.Warn("failed to delete", zap.Error(err))
return fmt.Errorf("failed to delete cluster loader RBAC ClusterRole (%v)", err)
}
ts.cfg.Logger.Info("deleted cluster loader RBAC ClusterRole", zap.Error(err))
ts.cfg.EKSConfig.Sync()
return nil
}
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) createRBACClusterRoleBinding() error {
ts.cfg.Logger.Info("creating cluster loader RBAC ClusterRoleBinding")
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
_, err := ts.cfg.K8SClient.KubernetesClientSet().
RbacV1().
ClusterRoleBindings().
Create(
ctx,
&rbacv1.ClusterRoleBinding{
TypeMeta: metav1.TypeMeta{
APIVersion: "rbac.authorization.k8s.io/v1",
Kind: "ClusterRoleBinding",
},
ObjectMeta: metav1.ObjectMeta{
Name: clusterLoaderRBACClusterRoleBindingName,
Namespace: "default",
Labels: map[string]string{
"app.kubernetes.io/name": clusterLoaderAppName,
},
},
RoleRef: rbacv1.RoleRef{
APIGroup: "rbac.authorization.k8s.io",
Kind: "ClusterRole",
Name: clusterLoaderRBACRoleName,
},
Subjects: []rbacv1.Subject{
{
APIGroup: "",
Kind: "ServiceAccount",
Name: clusterLoaderServiceAccountName,
Namespace: ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
},
{ // https://kubernetes.io/docs/reference/access-authn-authz/rbac/
APIGroup: "rbac.authorization.k8s.io",
Kind: "User",
Name: "system:node",
},
},
},
metav1.CreateOptions{},
)
cancel()
if err != nil {
return fmt.Errorf("failed to create cluster loader RBAC ClusterRoleBinding (%v)", err)
}
ts.cfg.Logger.Info("created cluster loader RBAC ClusterRoleBinding")
ts.cfg.EKSConfig.Sync()
return nil
}
// ref. https://github.com/kubernetes/client-go/tree/master/examples/in-cluster-client-configuration
// ref. https://kubernetes.io/docs/reference/access-authn-authz/rbac/
func (ts *tester) deleteRBACClusterRoleBinding() error {
ts.cfg.Logger.Info("deleting cluster loader RBAC ClusterRoleBinding")
foreground := metav1.DeletePropagationForeground
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
err := ts.cfg.K8SClient.KubernetesClientSet().
RbacV1().
ClusterRoleBindings().
Delete(
ctx,
clusterLoaderRBACClusterRoleBindingName,
metav1.DeleteOptions{
GracePeriodSeconds: aws.Int64(0),
PropagationPolicy: &foreground,
},
)
cancel()
if err != nil && !apierrs.IsNotFound(err) && !strings.Contains(err.Error(), "not found") {
ts.cfg.Logger.Warn("failed to delete", zap.Error(err))
return fmt.Errorf("failed to delete cluster loader RBAC ClusterRoleBinding (%v)", err)
}
ts.cfg.Logger.Info("deleted cluster loader RBAC ClusterRoleBinding", zap.Error(err))
ts.cfg.EKSConfig.Sync()
return nil
}
func (ts *tester) createConfigMap() error {
ts.cfg.Logger.Info("creating configmap")
b, err := ioutil.ReadFile(ts.cfg.EKSConfig.KubeConfigPath)
if err != nil {
return err
}
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
_, err = ts.cfg.K8SClient.KubernetesClientSet().
CoreV1().
ConfigMaps(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Create(
ctx,
&v1.ConfigMap{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ConfigMap",
},
ObjectMeta: metav1.ObjectMeta{
Name: clusterLoaderKubeConfigConfigMapName,
Namespace: ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
Labels: map[string]string{
"name": clusterLoaderKubeConfigConfigMapName,
},
},
Data: map[string]string{
clusterLoaderKubeConfigConfigMapFileName: string(b),
},
},
metav1.CreateOptions{},
)
cancel()
if err != nil {
return err
}
ts.cfg.Logger.Info("created configmap")
ts.cfg.EKSConfig.Sync()
return nil
}
func (ts *tester) deleteConfigMap() error {
ts.cfg.Logger.Info("deleting configmap")
foreground := metav1.DeletePropagationForeground
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
err := ts.cfg.K8SClient.KubernetesClientSet().
CoreV1().
ConfigMaps(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Delete(
ctx,
clusterLoaderKubeConfigConfigMapName,
metav1.DeleteOptions{
GracePeriodSeconds: aws.Int64(0),
PropagationPolicy: &foreground,
},
)
cancel()
if err != nil && !apierrs.IsNotFound(err) && !strings.Contains(err.Error(), "not found") {
ts.cfg.Logger.Warn("failed to delete", zap.Error(err))
return err
}
ts.cfg.Logger.Info("deleted configmap")
ts.cfg.EKSConfig.Sync()
return nil
}
func (ts *tester) createJob() (err error) {
obj, b, err := ts.createObject()
if err != nil {
return err
}
ts.cfg.Logger.Info("creating Job",
zap.String("name", clusterLoaderJobName),
zap.String("object-size", humanize.Bytes(uint64(len(b)))),
)
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
_, err = ts.cfg.K8SClient.KubernetesClientSet().
BatchV1().
Jobs(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Create(ctx, &obj, metav1.CreateOptions{})
cancel()
if err != nil {
return fmt.Errorf("failed to create Job (%v)", err)
}
ts.cfg.Logger.Info("created Job")
return nil
}
func (ts *tester) createObject() (batchv1.Job, string, error) {
// "/opt/"+clusterLoaderKubeConfigConfigMapFileName,
// do not specify "kubeconfig", and use in-cluster config via "pkg/k8s-client"
// ref. https://github.com/kubernetes/client-go/blob/master/examples/in-cluster-client-configuration/main.go
// ref. https://github.com/kubernetes/perf-tests/pull/1295
testerCmd := fmt.Sprintf("/aws-k8s-tester eks create cluster-loader --partition=%s --region=%s --s3-bucket-name=%s --cluster-loader-path=/clusterloader2 --test-config-path=/clusterloader2-test-config.yaml --report-dir=/var/log/cluster-loader-remote --report-tar-gz-path=/var/log/cluster-loader-remote.tar.gz --report-tar-gz-s3-path=%s --log-path=/var/log/cluster-loader-remote.log --log-s3-path=%s --pod-startup-latency-path=/var/log/cluster-loader-remote.pod-startup-latency-output.json --pod-startup-latency-s3-path=%s --runs=%d --timeout=%v --nodes=%d --nodes-per-namespace=%d --pods-per-node=%d --big-group-size=%d --medium-group-size=%d --small-group-size=%d --small-stateful-sets-per-namespace=%d --medium-stateful-sets-per-namespace=%d --cl2-use-host-network-pods=%v --cl2-load-test-throughput=%d --cl2-enable-pvs=%v --prometheus-scrape-kube-proxy=%v --enable-system-pod-metrics=%v --cl2-scheduler-throughput-threshold=%d",
ts.cfg.EKSConfig.Partition,
ts.cfg.EKSConfig.Region,
ts.cfg.EKSConfig.S3.BucketName,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.ReportTarGzS3Key,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.LogS3Key,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatencyS3Key,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Runs,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Timeout,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Nodes,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.NodesPerNamespace,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodsPerNode,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.BigGroupSize,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.MediumGroupSize,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.SmallGroupSize,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.SmallStatefulSetsPerNamespace,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.MediumStatefulSetsPerNamespace,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.CL2UseHostNetworkPods,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.CL2LoadTestThroughput,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.CL2EnablePVS,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PrometheusScrapeKubeProxy,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.EnableSystemPodMetrics,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.CL2SchedulerThroughputThreshold,
)
dirOrCreate := v1.HostPathDirectoryOrCreate
podSpec := v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"app.kubernetes.io/name": clusterLoaderAppName,
},
},
Spec: v1.PodSpec{
ServiceAccountName: clusterLoaderServiceAccountName,
// spec.template.spec.restartPolicy: Unsupported value: "Always": supported values: "OnFailure", "Never"
RestartPolicy: v1.RestartPolicyOnFailure,
// TODO: set resource limits
Containers: []v1.Container{
{
Name: clusterLoaderAppName,
Image: ts.ecrImage,
ImagePullPolicy: v1.PullAlways,
Command: []string{
"/bin/sh",
"-ec",
testerCmd,
},
// grant access "/dev/kmsg"
SecurityContext: &v1.SecurityContext{
Privileged: aws.Bool(true),
},
// ref. https://kubernetes.io/docs/concepts/cluster-administration/logging/
VolumeMounts: []v1.VolumeMount{
{ // to execute
Name: clusterLoaderKubeConfigConfigMapName,
MountPath: "/opt",
},
{ // to write
Name: "varlog",
MountPath: "/var/log",
ReadOnly: false,
},
},
},
},
// ref. https://kubernetes.io/docs/concepts/cluster-administration/logging/
Volumes: []v1.Volume{
{ // to execute
Name: clusterLoaderKubeConfigConfigMapName,
VolumeSource: v1.VolumeSource{
ConfigMap: &v1.ConfigMapVolumeSource{
LocalObjectReference: v1.LocalObjectReference{
Name: clusterLoaderKubeConfigConfigMapName,
},
DefaultMode: aws.Int32(0777),
},
},
},
{ // to write
Name: "varlog",
VolumeSource: v1.VolumeSource{
HostPath: &v1.HostPathVolumeSource{
Path: "/var/log",
Type: &dirOrCreate,
},
},
},
},
NodeSelector: map[string]string{
// do not deploy in fake nodes, obviously
"NodeType": "regular",
},
},
}
jobObj := batchv1.Job{
TypeMeta: metav1.TypeMeta{
APIVersion: "batch/v1",
Kind: "Job",
},
ObjectMeta: metav1.ObjectMeta{
Name: clusterLoaderJobName,
Namespace: ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace,
},
Spec: batchv1.JobSpec{
Completions: aws.Int32(1),
Parallelism: aws.Int32(1),
Template: podSpec,
// TODO: 'TTLSecondsAfterFinished' is still alpha
// https://kubernetes.io/docs/concepts/workloads/controllers/ttlafterfinished/
},
}
b, err := yaml.Marshal(jobObj)
return jobObj, string(b), err
}
func (ts *tester) deleteJob() (err error) {
foreground := metav1.DeletePropagationForeground
ts.cfg.Logger.Info("deleting Job", zap.String("name", clusterLoaderJobName))
ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
err = ts.cfg.
K8SClient.KubernetesClientSet().
BatchV1().
Jobs(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Namespace).
Delete(
ctx,
clusterLoaderJobName,
metav1.DeleteOptions{
GracePeriodSeconds: aws.Int64(0),
PropagationPolicy: &foreground,
},
)
cancel()
if err == nil {
ts.cfg.Logger.Info("deleted Job", zap.String("name", clusterLoaderJobName))
} else {
ts.cfg.Logger.Warn("failed to delete Job", zap.Error(err))
}
return err
}
func (ts *tester) checkResults() (err error) {
ctx, cancel := context.WithTimeout(context.Background(), ts.cfg.EKSConfig.AddOnClusterLoaderRemote.Timeout)
ch := aws_s3.PollUntilExist(
ctx,
ts.cfg.Stopc,
ts.cfg.Logger,
ts.cfg.S3API,
ts.cfg.EKSConfig.S3.BucketName,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatencyS3Key,
2*time.Minute,
15*time.Second,
)
for cur := range ch {
err = cur.Error
}
cancel()
if err != nil {
return err
}
if err = aws_s3.Download(
ts.cfg.Logger,
ts.cfg.S3API,
ts.cfg.EKSConfig.S3.BucketName,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatencyS3Key,
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatencyPath,
); err != nil {
return err
}
ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatency, err = cluster_loader.ParsePodStartupLatency(ts.cfg.EKSConfig.AddOnClusterLoaderRemote.PodStartupLatencyPath)
if err != nil {
return fmt.Errorf("failed to read PodStartupLatency %q (%v)", "", err)
}
ts.cfg.EKSConfig.Sync()
return nil
}
/*
e.g.
pod-startup-latency:
dataItems:
- data:
Perc50: 0
Perc90: 0
Perc99: 250
labels:
Metric: create_to_schedule
unit: ms
- data:
Perc50: 1000
Perc90: 1062.5
Perc99: 2062.5
labels:
Metric: schedule_to_run
unit: ms
- data:
Perc50: 1200.219827375
Perc90: 1741.2740193125
Perc99: 1992.869426375
labels:
Metric: run_to_watch
unit: ms
- data:
Perc50: 2289.84256025
Perc90: 2848.8128514375
Perc99: 3143.05340125
labels:
Metric: schedule_to_watch
unit: ms
- data:
Perc50: 2297.02802625
Perc90: 2861.429472625
Perc99: 3156.2773068125
labels:
Metric: pod_startup
unit: ms
version: "1.0"
*/
func (ts *tester) publishResults() (err error) {
tv := aws.Time(time.Now().UTC())
datums := make([]*cloudwatch.MetricDatum, 0)
for _, item := range ts.cfg.EKSConfig.AddOnClusterLoaderLocal.PodStartupLatency.DataItems {
name := "add-on-cluster-loader-remote-pod-startup-latency"
if mv, ok := item.Labels["Metric"]; ok {
name += "-" + mv
}
for k, fv := range item.Data {
key := name + "-" + k
ts.cfg.Logger.Info("adding", zap.String("key", key), zap.Float64("value", fv))
datums = append(datums, &cloudwatch.MetricDatum{
Timestamp: tv,
MetricName: aws.String(key),
Unit: toUnit(item.Unit),
Value: aws.Float64(fv),
})
}
}
return cw.PutData(ts.cfg.Logger, ts.cfg.CWAPI, ts.cfg.EKSConfig.CWNamespace, 20, datums...)
}
func toUnit(k string) *string {
switch k {
case "ms":
return aws.String(cloudwatch.StandardUnitMilliseconds)
default:
return nil
}
}