log useful information about the cluster and the instance

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

pkg/providers/v1/aws.go

@@ -681,6 +681,14 @@ func (c *Cloud) Initialize(clientBuilder cloudprovider.ControllerClientBuilder,
 	c.eventBroadcaster.StartStructuredLogging(0)
 	c.eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: c.kubeClient.CoreV1().Events("")})
 	c.eventRecorder = c.eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "aws-cloud-provider"})
+
+	v, err := c.kubeClient.Discovery().ServerVersion()
+	if err != nil {
+		klog.Errorf("Error looking up cluster version: %q", err)
+	} else {
+		klog.Infof("cluster version: v%s.%s. git version: %s. git tree state: %s. commit: %s. platform: %s",
+			v.Major, v.Minor, v.GitVersion, v.GitTreeState, v.GitCommit, v.Platform)
+	}
 }
 
 // Clusters returns the list of clusters.

pkg/providers/v1/aws_sdk.go

@@ -31,6 +31,7 @@ import (
 	"github.com/aws/aws-sdk-go/service/elbv2"
 	"github.com/aws/aws-sdk-go/service/kms"
 	"k8s.io/client-go/pkg/version"
+	"k8s.io/klog/v2"
 
 	"k8s.io/cloud-provider-aws/pkg/providers/v1/config"
 	"k8s.io/cloud-provider-aws/pkg/providers/v1/iface"
@@ -208,6 +209,20 @@ func (p *awsSDKProvider) Metadata() (config.EC2Metadata, error) {
 	}
 	client := ec2metadata.New(sess)
 	p.addAPILoggingHandlers(&client.Handlers)
+
+	identity, err := client.GetInstanceIdentityDocument()
+	if err != nil {
+		return nil, fmt.Errorf("unable to get instance identity document: %v", err)
+	}
+	klog.Info("instance metadata identity",
+		"region", identity.Region,
+		"availability-zone", identity.AvailabilityZone,
+		"instance-type", identity.InstanceType,
+		"architecture", identity.Architecture,
+		"instance-id", identity.InstanceID,
+		"private-ip", identity.PrivateIP,
+		"account-id", identity.AccountID,
+		"image-id", identity.ImageID)
 	return client, nil
 }