Get EC2 instance list filtered by NameTag

descrive_ec2_instances.go

package main

import (
	"fmt"
	"github.com/awslabs/aws-sdk-go/aws"
	"github.com/awslabs/aws-sdk-go/aws/credentials"
	"github.com/awslabs/aws-sdk-go/service/ec2"
)

func main() {
	profile := "default" // your profile name
	name := "*test*"     // search string (NameTag)

	svc := ec2.New(&aws.Config{
		Credentials: credentials.NewSharedCredentials("", profile),
		Region:      "ap-northeast-1",
	})

	params := &ec2.DescribeInstancesInput{
		Filters: []*ec2.Filter{
			&ec2.Filter{
				Name: aws.String("tag:Name"),
				Values: []*string{
					aws.String(name),
				},
			},
		},
	}

	res, _ := svc.DescribeInstances(params)

	for _, i := range res.Reservations[0].Instances {
		var nt string
		for _, t := range i.Tags {
			if *t.Key == "Name" {
				nt = *t.Value
				break
			}
		}
		fmt.Println(nt, *i.InstanceID, *i.State.Name)
	}
}

Well, this just saved me a bunch of time. Thanks!