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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| package eksapi | ||
|
|
||
| import ( | ||
| "context" | ||
| _ "embed" | ||
| "errors" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/aws/aws-sdk-go-v2/aws" | ||
| "github.com/aws/aws-sdk-go-v2/service/ssm" | ||
| ssmtypes "github.com/aws/aws-sdk-go-v2/service/ssm/types" | ||
| v1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| type logManager struct { | ||
| clients *awsClients | ||
| resourceID string | ||
| } | ||
|
|
||
| type deployerPhase string | ||
|
|
||
| const ( | ||
| deployerPhaseUp = "up" | ||
| deployerPhaseDown = "down" | ||
| ) | ||
|
|
||
| func NewLogManager(clients *awsClients, resourceID string) *logManager { | ||
| return &logManager{ | ||
| clients: clients, | ||
| resourceID: resourceID, | ||
| } | ||
| } | ||
|
|
||
| func (m *logManager) gatherLogsFromNodes(k8sClient *kubernetes.Clientset, opts *deployerOptions, phase deployerPhase) error { | ||
| if opts.LogBucket == "" { | ||
| klog.Info("--log-bucket is empty, no logs will be gathered!") | ||
| return nil | ||
| } | ||
| switch opts.UserDataFormat { | ||
| case "bootstrap.sh", "nodeadm", "": // if no --user-data-format was passed, we must be using managed nodes, which default to AL-based AMIs | ||
| return m.gatherLogsUsingScript(k8sClient, opts, phase) | ||
| default: | ||
| klog.Warningf("unable to gather logs for userDataFormat: %s\n", opts.UserDataFormat) | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| const logCollectorScriptSsmDocumentContent = `{ | ||
| "schemaVersion": "2.2", | ||
| "description": "Collect logs from an Amazon Linux EKS node", | ||
| "parameters": { | ||
| "s3Destination": { | ||
| "type": "String" | ||
| } | ||
| }, | ||
| "mainSteps": [ | ||
| { | ||
| "action": "aws:runShellScript", | ||
| "name": "collectAndUploadLogs", | ||
| "precondition": { | ||
| "StringEquals": ["platformType", "Linux"] | ||
| }, | ||
| "inputs": { | ||
| "runCommand": [ | ||
| "bash /etc/eks/log-collector-script/eks-log-collector.sh >/dev/null 2>&1", | ||
| "aws s3 cp /var/log/eks_i* {{s3Destination}}" | ||
| ] | ||
| } | ||
| } | ||
| ] | ||
| } | ||
| ` | ||
|
|
||
| const logCollectorSsmDocumentTimeout = 5 * time.Minute | ||
|
|
||
| func (m *logManager) gatherLogsUsingScript(k8sClient *kubernetes.Clientset, opts *deployerOptions, phase deployerPhase) error { | ||
| nodes, err := k8sClient.CoreV1().Nodes().List(context.TODO(), v1.ListOptions{}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| instanceIds, err := getNodeInstanceIDs(nodes.Items) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| doc, err := m.clients.SSM().CreateDocument(context.TODO(), &ssm.CreateDocumentInput{ | ||
| Content: aws.String(logCollectorScriptSsmDocumentContent), | ||
| Name: aws.String(fmt.Sprintf("%s-log-collector", m.resourceID)), | ||
| DocumentType: ssmtypes.DocumentTypeCommand, | ||
| DocumentFormat: ssmtypes.DocumentFormatJson, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| m.clients.SSM().DeleteDocument(context.TODO(), &ssm.DeleteDocumentInput{ | ||
| Name: doc.DocumentDescription.Name, | ||
| }) | ||
| }() | ||
| command, err := m.clients.SSM().SendCommand(context.TODO(), &ssm.SendCommandInput{ | ||
| DocumentName: doc.DocumentDescription.Name, | ||
| InstanceIds: instanceIds, | ||
| Parameters: map[string][]string{ | ||
| "s3Destination": []string{fmt.Sprintf("s3://%s/node-logs/%s/%s/", opts.LogBucket, m.resourceID, phase)}, | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| var errs []error | ||
| for _, instanceId := range instanceIds { | ||
| out, err := ssm.NewCommandExecutedWaiter(m.clients.SSM()).WaitForOutput(context.TODO(), &ssm.GetCommandInvocationInput{ | ||
| CommandId: command.Command.CommandId, | ||
| InstanceId: aws.String(instanceId), | ||
| }, logCollectorSsmDocumentTimeout) | ||
| if err != nil { | ||
| errs = append(errs, err) | ||
| } else { | ||
| klog.Infof("log collection command for %s: %s", instanceId, out.Status) | ||
| } | ||
| } | ||
| return errors.Join(errs...) | ||
| } |
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