Skip the aws internal tags

Author: athiruma

pkg/cloud/converters/tags.go

@@ -18,6 +18,7 @@ package converters
 
 import (
 	"sort"
+	"strings"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/autoscaling"
@@ -31,6 +32,11 @@ import (
 	infrav1 "sigs.k8s.io/cluster-api-provider-aws/v2/api/v1beta2"
 )
 
+const (
+	// AwsInternalTagPrefix is the prefix for AWS internal tags, which are reserved for internal AWS use.
+	AwsInternalTagPrefix = "aws:"
+)
+
 // TagsToMap converts a []*ec2.Tag into a infrav1.Tags.
 func TagsToMap(src []*ec2.Tag) infrav1.Tags {
 	tags := make(infrav1.Tags, len(src))
@@ -58,12 +64,14 @@ func MapToTags(src infrav1.Tags) []*ec2.Tag {
 	tags := make([]*ec2.Tag, 0, len(src))
 
 	for k, v := range src {
-		tag := &ec2.Tag{
-			Key:   aws.String(k),
-			Value: aws.String(v),
-		}
+		if !strings.HasPrefix(k, AwsInternalTagPrefix) {
+			tag := &ec2.Tag{
+				Key:   aws.String(k),
+				Value: aws.String(v),
+			}
 
-		tags = append(tags, tag)
+			tags = append(tags, tag)
+		}
 	}
 
 	// Sort so that unit tests can expect a stable order