add logs about the vpc values fetched by the controller

Author: jeswinkoshyninan

docs/deploy/installation.md

@@ -37,7 +37,7 @@ You can set the IMDSv2 as follows:
 aws ec2 modify-instance-metadata-options --http-put-response-hop-limit 2 --http-tokens required --region <region> --instance-id <instance-id>
 ```
 
-Instead of depending on IMDSv2, you can specify the AWS Region via the controller flag `--aws-region`, and the AWS VPC via controller flag `--aws-vpc-id` or by specifying vpc tags via the flag `--aws-vpc-tags` and an optional flag `--aws-vpc-tag-key` if you have a different key for the tag other than "Name". 
+Instead of depending on IMDSv2, you can specify the AWS Region via the controller flag `--aws-region`, and the AWS VPC via controller flag `--aws-vpc-id` or by specifying vpc tags via the flag `--aws-vpc-tags` and an optional flag `--aws-vpc-tag-key` if you have a different key for the tag other than "Name". Note that if you specify flags `--aws-vpc-id` and `--aws-vpc-tags`, then value given `--aws-vpc-id` will be taken by controller.
 
 ## Configure IAM
 

pkg/aws/cloud.go

@@ -11,6 +11,7 @@ import (
 	"github.com/aws/aws-sdk-go/aws/endpoints"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/ec2"
+	"github.com/go-logr/logr"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	amerrors "k8s.io/apimachinery/pkg/util/errors"
@@ -131,7 +132,10 @@ func NewCloud(cfg CloudConfig, metricsRegisterer prometheus.Registerer) (Cloud,
 }
 
 func getVpcID(cfg CloudConfig, ec2Service services.EC2, metadata services.EC2Metadata) (string, error) {
+
+	logger := logr.Logger{}
 	if cfg.VpcID != "" {
+		logger.V(1).Info("vpcid is specified using flag --aws-vpc-id, controller will use the value %s", cfg.VpcID)
 		return cfg.VpcID, nil
 	}