Use TerminateInstances with an Amazon SDK or CLI

    /// <summary>
    /// Terminate an EC2 instance.
    /// </summary>
    /// <param name="ec2InstanceId">The instance Id of the EC2 instance
    /// to terminate.</param>
    /// <returns>Async task.</returns>
    public async Task<List<InstanceStateChange>> TerminateInstances(string ec2InstanceId)
    {
        var request = new TerminateInstancesRequest
        {
            InstanceIds = new List<string> { ec2InstanceId }
        };

        var response = await _amazonEC2.TerminateInstancesAsync(request);
        return response.TerminatingInstances;
    }

###############################################################################
# function ec2_terminate_instances
#
# This function terminates one or more Amazon Elastic Compute Cloud (Amazon EC2)
# instances using the AWS CLI.
#
# Parameters:
#       -i instance_ids - A space-separated list of instance IDs.
#       -h - Display help.
#
# Returns:
#       0 - If successful.
#       1 - If it fails.
###############################################################################
function ec2_terminate_instances() {
  local instance_ids response
  local option OPTARG # Required to use getopts command in a function.

  # bashsupport disable=BP5008
  function usage() {
    echo "function ec2_terminate_instances"
    echo "Terminates one or more Amazon Elastic Compute Cloud (Amazon EC2) instances."
    echo "  -i instance_ids - A space-separated list of instance IDs."
    echo "  -h - Display help."
    echo ""
  }

  # Retrieve the calling parameters.
  while getopts "i:h" option; do
    case "${option}" in
      i) instance_ids="${OPTARG}" ;;
      h)
        usage
        return 0
        ;;
      \?)
        echo "Invalid parameter"
        usage
        return 1
        ;;
    esac
  done
  export OPTIND=1

  # Check if instance ID is provided
  if [[ -z "${instance_ids}" ]]; then
    echo "Error: Missing required instance IDs parameter."
    usage
    return 1
  fi

  # shellcheck disable=SC2086
  response=$(aws ec2 terminate-instances \
    "--instance-ids" $instance_ids \
    --query 'TerminatingInstances[*].[InstanceId,CurrentState.Name]' \
    --output text) || {
    aws_cli_error_log ${?}
    errecho "ERROR: AWS reports terminate-instances operation failed.$response"
    return 1
  }

  return 0
}

The utility functions used in this example.

###############################################################################
# function errecho
#
# This function outputs everything sent to it to STDERR (standard error output).
###############################################################################
function errecho() {
  printf "%s\n" "$*" 1>&2
}

##############################################################################
# function aws_cli_error_log()
#
# This function is used to log the error messages from the AWS CLI.
#
# The function expects the following argument:
#         $1 - The error code returned by the AWS CLI.
#
#  Returns:
#          0: - Success.
#
##############################################################################
function aws_cli_error_log() {
  local err_code=$1
  errecho "Error code : $err_code"
  if [ "$err_code" == 1 ]; then
    errecho "  One or more S3 transfers failed."
  elif [ "$err_code" == 2 ]; then
    errecho "  Command line failed to parse."
  elif [ "$err_code" == 130 ]; then
    errecho "  Process received SIGINT."
  elif [ "$err_code" == 252 ]; then
    errecho "  Command syntax invalid."
  elif [ "$err_code" == 253 ]; then
    errecho "  The system environment or configuration was invalid."
  elif [ "$err_code" == 254 ]; then
    errecho "  The service returned an error."
  elif [ "$err_code" == 255 ]; then
    errecho "  255 is a catch-all error."
  fi

  return 0
}

    Aws::EC2::EC2Client ec2Client(clientConfiguration);

    Aws::EC2::Model::TerminateInstancesRequest request;
    request.SetInstanceIds({instanceID});

    Aws::EC2::Model::TerminateInstancesOutcome outcome =
            ec2Client.TerminateInstances(request);
    if (outcome.IsSuccess()) {
        std::cout << "Ec2 instance '" << instanceID <<
                  "' was terminated." << std::endl;
    }
    else {
        std::cerr << "Failed to terminate ec2 instance " << instanceID <<
                  ", " <<
                  outcome.GetError().GetMessage() << std::endl;
        return false;
    }

To terminate an Amazon EC2 instance

This example terminates the specified instance.

Command:

aws ec2 terminate-instances --instance-ids i-1234567890abcdef0

Output:

{
    "TerminatingInstances": [
        {
            "InstanceId": "i-1234567890abcdef0",
            "CurrentState": {
                "Code": 32,
                "Name": "shutting-down"
            },
            "PreviousState": {
                "Code": 16,
                "Name": "running"
            }
        }
    ]
}

For more information, see Using Amazon EC2 Instances in the Amazon Command Line Interface User Guide.

    public static void terminateEC2(Ec2Client ec2, String instanceId) {
        try {
            Ec2Waiter ec2Waiter = Ec2Waiter.builder()
                    .overrideConfiguration(b -> b.maxAttempts(100))
                    .client(ec2)
                    .build();

            TerminateInstancesRequest ti = TerminateInstancesRequest.builder()
                    .instanceIds(instanceId)
                    .build();

            System.out.println("Use an Ec2Waiter to wait for the instance to terminate. This will take a few minutes.");
            ec2.terminateInstances(ti);
            DescribeInstancesRequest instanceRequest = DescribeInstancesRequest.builder()
                    .instanceIds(instanceId)
                    .build();

            WaiterResponse<DescribeInstancesResponse> waiterResponse = ec2Waiter
                    .waitUntilInstanceTerminated(instanceRequest);
            waiterResponse.matched().response().ifPresent(System.out::println);
            System.out.println("Successfully started instance " + instanceId);
            System.out.println(instanceId + " is terminated!");

        } catch (Ec2Exception e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

import { TerminateInstancesCommand } from "@aws-sdk/client-ec2";

import { client } from "../libs/client.js";

export const main = async () => {
  const command = new TerminateInstancesCommand({
    InstanceIds: ["INSTANCE_ID"],
  });

  try {
    const { TerminatingInstances } = await client.send(command);
    const instanceList = TerminatingInstances.map(
      (instance) => ` • ${instance.InstanceId}`,
    );
    console.log("Terminating instances:");
    console.log(instanceList.join("\n"));
  } catch (err) {
    console.error(err);
  }
};

suspend fun terminateEC2(instanceID: String) {
    val request =
        TerminateInstancesRequest {
            instanceIds = listOf(instanceID)
        }

    Ec2Client { region = "us-west-2" }.use { ec2 ->
        val response = ec2.terminateInstances(request)
        response.terminatingInstances?.forEach { instance ->
            println("The ID of the terminated instance is ${instance.instanceId}")
        }
    }
}

Example 1: This example terminates the specified instance (the instance may be running or in 'stopped' state). The cmdlet will prompt for confirmation before proceeding; use the -Force switch to suppress the prompt.

Remove-EC2Instance -InstanceId i-12345678

Output:

CurrentState                      InstanceId    PreviousState
------------                      ----------    -------------
Amazon.EC2.Model.InstanceState    i-12345678    Amazon.EC2.Model.InstanceState

class InstanceWrapper:
    """Encapsulates Amazon Elastic Compute Cloud (Amazon EC2) instance actions."""

    def __init__(self, ec2_resource, instance=None):
        """
        :param ec2_resource: A Boto3 Amazon EC2 resource. This high-level resource
                             is used to create additional high-level objects
                             that wrap low-level Amazon EC2 service actions.
        :param instance: A Boto3 Instance object. This is a high-level object that
                           wraps instance actions.
        """
        self.ec2_resource = ec2_resource
        self.instance = instance

    @classmethod
    def from_resource(cls):
        ec2_resource = boto3.resource("ec2")
        return cls(ec2_resource)


    def terminate(self):
        """
        Terminates an instance and waits for it to be in a terminated state.
        """
        if self.instance is None:
            logger.info("No instance to terminate.")
            return

        instance_id = self.instance.id
        try:
            self.instance.terminate()
            self.instance.wait_until_terminated()
            self.instance = None
        except ClientError as err:
            logging.error(
                "Couldn't terminate instance %s. Here's why: %s: %s",
                instance_id,
                err.response["Error"]["Code"],
                err.response["Error"]["Message"],
            )
            raise

require "aws-sdk-ec2"

# Prerequisites:
#
# - The Amazon EC2 instance.
#
# @param ec2_client [Aws::EC2::Client] An initialized EC2 client.
# @param instance_id [String] The ID of the instance.
# @return [Boolean] true if the instance was terminated; otherwise, false.
# @example
#   exit 1 unless instance_terminated?(
#     Aws::EC2::Client.new(region: 'us-west-2'),
#     'i-123abc'
#   )
def instance_terminated?(ec2_client, instance_id)
  response = ec2_client.describe_instance_status(instance_ids: [instance_id])

  if response.instance_statuses.count.positive? &&
    response.instance_statuses[0].instance_state.name == "terminated"

    puts "The instance is already terminated."
    return true
  end

  ec2_client.terminate_instances(instance_ids: [instance_id])
  ec2_client.wait_until(:instance_terminated, instance_ids: [instance_id])
  puts "Instance terminated."
  return true
rescue StandardError => e
  puts "Error terminating instance: #{e.message}"
  return false
end

# Example usage:
def run_me
  instance_id = ""
  region = ""
  # Print usage information and then stop.
  if ARGV[0] == "--help" || ARGV[0] == "-h"
    puts "Usage:   ruby ec2-ruby-example-terminate-instance-i-123abc.rb " \
      "INSTANCE_ID REGION "
   # Replace us-west-2 with the AWS Region you're using for Amazon EC2.
    puts "Example: ruby ec2-ruby-example-terminate-instance-i-123abc.rb " \
      "i-123abc us-west-2"
    exit 1
  # If no values are specified at the command prompt, use these default values.
  # Replace us-west-2 with the AWS Region you're using for Amazon EC2.
  elsif ARGV.count.zero?
    instance_id = "i-123abc"
    region = "us-west-2"
  # Otherwise, use the values as specified at the command prompt.
  else
    instance_id = ARGV[0]
    region = ARGV[1]
  end

  ec2_client = Aws::EC2::Client.new(region: region)

  puts "Attempting to terminate instance '#{instance_id}' " \
    "(this might take a few minutes)..."
  unless instance_terminated?(ec2_client, instance_id)
    puts "Could not terminate instance."
  end
end

run_me if $PROGRAM_NAME == __FILE__