Use UnmonitorInstances with an Amazon SDK or CLI

//! Disable monitoring for an EC2 instance.
/*!
  \param instanceId: An EC2 instance ID.
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::EC2::disableMonitoring(const Aws::String &instanceId,
                                    const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::EC2::EC2Client ec2Client(clientConfiguration);
    Aws::EC2::Model::UnmonitorInstancesRequest unrequest;
    unrequest.AddInstanceIds(instanceId);
    unrequest.SetDryRun(true);

    Aws::EC2::Model::UnmonitorInstancesOutcome dryRunOutcome = ec2Client.UnmonitorInstances(unrequest);
    if (dryRunOutcome.IsSuccess()) {
        std::cerr
                << "Failed dry run to disable monitoring on instance. A dry run should trigger an error."
                <<
                std::endl;
        return false;
    } else if (dryRunOutcome.GetError().GetErrorType() !=
               Aws::EC2::EC2Errors::DRY_RUN_OPERATION) {
        std::cout << "Failed dry run to disable monitoring on instance " <<
                  instanceId << ": " << dryRunOutcome.GetError().GetMessage() <<
                  std::endl;
        return false;
    }

    unrequest.SetDryRun(false);
    Aws::EC2::Model::UnmonitorInstancesOutcome unmonitorInstancesOutcome = ec2Client.UnmonitorInstances(unrequest);
    if (!unmonitorInstancesOutcome.IsSuccess()) {
        std::cout << "Failed to disable monitoring on instance " << instanceId
                  << ": " << unmonitorInstancesOutcome.GetError().GetMessage() <<
                  std::endl;
    } else {
        std::cout << "Successfully disable monitoring on instance " <<
                  instanceId << std::endl;
    }

    return unmonitorInstancesOutcome.IsSuccess();
}

To disable detailed monitoring for an instance

This example command disables detailed monitoring for the specified instance.

Command:

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

Output:

{
  "InstanceMonitorings": [
      {
          "InstanceId": "i-1234567890abcdef0",
          "Monitoring": {
              "State": "disabling"
          }
      }
  ]
}

import { EC2Client, UnmonitorInstancesCommand } from "@aws-sdk/client-ec2";
import { fileURLToPath } from "node:url";
import { parseArgs } from "node:util";

/**
 * Turn off detailed monitoring for the selected instance.
 * @param {{ instanceIds: string[] }} options
 */
export const main = async ({ instanceIds }) => {
  const client = new EC2Client({});
  const command = new UnmonitorInstancesCommand({
    InstanceIds: instanceIds,
  });

  try {
    const { InstanceMonitorings } = await client.send(command);
    const instanceMonitoringsList = InstanceMonitorings.map(
      (im) =>
        ` • Detailed monitoring state for ${im.InstanceId} is ${im.Monitoring.State}.`,
    );
    console.log("Monitoring status:");
    console.log(instanceMonitoringsList.join("\n"));
  } catch (caught) {
    if (
      caught instanceof Error &&
      caught.name === "InvalidInstanceID.NotFound"
    ) {
      console.warn(`${caught.message}`);
    } else {
      throw caught;
    }
  }
};

Example 1: This example disables detailed monitoring for the specified instance.

Stop-EC2InstanceMonitoring -InstanceId i-12345678

Output:

InstanceId    Monitoring
----------    ----------
i-12345678    Amazon.EC2.Model.Monitoring