EC2 describeInstances

main.go

package main

import (
	"context"
	"fmt"
	"log"
	
	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/ec2"
)

func main() {
	// Load the AWS configuration
	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("us-west-2"))
	if err != nil {
		log.Fatalf("Failed to load configuration, %v", err)
	}

	// Create an EC2 client
	client := ec2.NewFromConfig(cfg)

	// Call DescribeInstances to list all EC2 instances
	output, err := client.DescribeInstances(context.TODO(), &ec2.DescribeInstancesInput{})
	if err != nil {
		log.Fatalf("Failed to describe instances, %v", err)
	}

	if len(output.Reservations) == 0 {
		fmt.Println("No instances found")
	}

	// Iterate through the reservations and instances
	for _, reservation := range output.Reservations {
		for _, instance := range reservation.Instances {
			instanceID := instance.InstanceId
			instanceState := instance.State.Name
			fmt.Printf("Instance ID: %v, State: %s\n", instanceID, instanceState)
		}
	}
}