/
ng.go
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/
ng.go
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// Package ng implements EKS worker nodes with a custom AMI.
package ng
import (
"errors"
"io"
"reflect"
"strings"
"sync"
"time"
"github.com/aws/aws-k8s-tester/eks/ng/autoscaler"
"github.com/aws/aws-k8s-tester/eks/ng/wait"
"github.com/aws/aws-k8s-tester/eksconfig"
k8s_client "github.com/aws/aws-k8s-tester/pkg/k8s-client"
"github.com/aws/aws-k8s-tester/pkg/timeutil"
aws_asg_v2 "github.com/aws/aws-sdk-go-v2/service/autoscaling"
aws_ec2_v2 "github.com/aws/aws-sdk-go-v2/service/ec2"
aws_iam_v2 "github.com/aws/aws-sdk-go-v2/service/iam"
aws_ssm_v2 "github.com/aws/aws-sdk-go-v2/service/ssm"
"go.uber.org/zap"
)
// Config defines Node Group configuration.
type Config struct {
Logger *zap.Logger
LogWriter io.Writer
Stopc chan struct{}
EKSConfig *eksconfig.Config
K8SClient k8s_client.EKS
IAMAPIV2 *aws_iam_v2.Client
EC2APIV2 *aws_ec2_v2.Client
SSMAPIV2 *aws_ssm_v2.Client
ASGAPIV2 *aws_asg_v2.Client
}
// Tester implements EKS "Node Group" for "kubetest2" Deployer.
// ref. https://github.com/kubernetes/test-infra/blob/master/kubetest2/pkg/types/types.go
// ref. https://docs.aws.amazon.com/eks/latest/userguide/create-managed-node-group.html
// ref. https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-eks-nodegroup.html
type Tester interface {
// Name returns the name of the tester.
Name() string
// Create creates EKS "Node Group", and waits for completion.
Create() error
// Delete deletes all EKS "Node Group" resources.
Delete() error
// FetchLogs fetches logs from all worker nodes.
FetchLogs() error
// DownloadClusterLogs dumps all logs to artifact directory.
// Let default kubetest log dumper handle all artifact uploads.
// See https://github.com/kubernetes/test-infra/pull/9811/files#r225776067.
DownloadClusterLogs(artifactDir string) error
}
var pkgName = reflect.TypeOf(tester{}).PkgPath()
func (ts *tester) Name() string { return pkgName }
// New creates a new Job tester.
func New(cfg Config) Tester {
cfg.Logger.Info("creating tester", zap.String("tester", pkgName))
return &tester{
cfg: cfg,
nodeWaiter: wait.New(wait.Config{
Logger: cfg.Logger,
LogWriter: cfg.LogWriter,
Stopc: cfg.Stopc,
EKSConfig: cfg.EKSConfig,
K8SClient: cfg.K8SClient,
EC2APIV2: cfg.EC2APIV2,
ASGAPIV2: cfg.ASGAPIV2,
}),
logsMu: new(sync.RWMutex),
failedOnce: false,
clusterAutoscaler: autoscaler.New(autoscaler.Config{
Logger: cfg.Logger,
LogWriter: cfg.LogWriter,
Stopc: cfg.Stopc,
EKSConfig: cfg.EKSConfig,
K8SClient: cfg.K8SClient,
}),
}
}
type tester struct {
cfg Config
nodeWaiter wait.NodeWaiter
logsMu *sync.RWMutex
failedOnce bool
clusterAutoscaler autoscaler.ClusterAutoscaler
}
func (ts *tester) Create() (err error) {
if !ts.cfg.EKSConfig.IsEnabledAddOnNodeGroups() {
ts.cfg.Logger.Info("node group is disabled; skipping creation")
return nil
}
if ts.cfg.EKSConfig.AddOnNodeGroups.Created {
ts.cfg.Logger.Info("node group is already created; skipping creation")
return nil
}
if len(ts.cfg.EKSConfig.VPC.PublicSubnetIDs) == 0 {
return errors.New("empty EKSConfig.VPC.PublicSubnetIDs")
}
ts.cfg.Logger.Info("starting tester.Create", zap.String("tester", pkgName))
createStart := time.Now()
defer func() {
createEnd := time.Now()
ts.cfg.EKSConfig.AddOnNodeGroups.TimeFrameCreate = timeutil.NewTimeFrame(createStart, createEnd)
ts.cfg.EKSConfig.Sync()
}()
if err = ts.createSecurityGroups(); err != nil {
return err
}
if err = ts.authorizeSecurityGroup(); err != nil {
return err
}
if err = ts.createRole(); err != nil {
return err
}
if err = ts.createConfigMap(); err != nil {
return err
}
if err = ts.createASGs(); err != nil {
return err
}
if err = ts.createSSM(); err != nil {
return err
}
if err = ts.clusterAutoscaler.Create(); err != nil {
return err
}
ts.cfg.EKSConfig.AddOnNodeGroups.Created = true
ts.cfg.EKSConfig.Sync()
return nil
}
func (ts *tester) Delete() error {
if !ts.cfg.EKSConfig.IsEnabledAddOnNodeGroups() {
return nil
}
if !ts.cfg.EKSConfig.AddOnNodeGroups.Created {
ts.cfg.Logger.Info("ManagedNodeGroup is not created; skipping deletion")
return nil
}
ts.cfg.Logger.Info("starting tester.Delete", zap.String("tester", pkgName))
deleteStart := time.Now()
defer func() {
deleteEnd := time.Now()
ts.cfg.EKSConfig.AddOnNodeGroups.TimeFrameDelete = timeutil.NewTimeFrame(deleteStart, deleteEnd)
ts.cfg.EKSConfig.Sync()
}()
var errs []string
if err := ts.deleteSSM(); err != nil {
ts.cfg.Logger.Warn("failed to delete SSM", zap.Error(err))
errs = append(errs, err.Error())
}
if err := ts.deleteRole(); err != nil {
ts.cfg.Logger.Warn("failed to delete role", zap.Error(err))
errs = append(errs, err.Error())
}
select {
case <-time.After(10 * time.Second):
case <-ts.cfg.Stopc:
return errors.New("stopped")
}
if err := ts.deleteASGs(); err != nil {
ts.cfg.Logger.Warn("failed to delete ASGs", zap.Error(err))
errs = append(errs, err.Error())
}
if ok := ts.deleteENIs(); ok {
time.Sleep(10 * time.Second)
}
select {
case <-time.After(10 * time.Second):
case <-ts.cfg.Stopc:
return errors.New("stopped")
}
if ok := ts.deleteENIs(); ok {
time.Sleep(10 * time.Second)
}
select {
case <-time.After(10 * time.Second):
case <-ts.cfg.Stopc:
return errors.New("stopped")
}
if err := ts.revokeSecurityGroups(); err != nil {
ts.cfg.Logger.Warn("failed to revoke SG", zap.Error(err))
errs = append(errs, err.Error())
}
if err := ts.deleteSecurityGroups(); err != nil {
ts.cfg.Logger.Warn("failed to delete SG", zap.Error(err))
errs = append(errs, err.Error())
}
if ok := ts.deleteENIs(); ok {
time.Sleep(10 * time.Second)
}
if len(errs) > 0 {
return errors.New(strings.Join(errs, ", "))
}
ts.cfg.EKSConfig.AddOnNodeGroups.Created = false
ts.cfg.EKSConfig.Sync()
return nil
}