Amazon EC2 - 如何通过 AWS API 获得可用的 ram 和 cpu 使用率? [英] Amazon EC2 - how to get available ram and cpu usage via AWS API?

问题描述

如何通过 AWS API 获取可用的 ram 和 cpu 使用率?

解决方案

您将需要 AmazonCloudWatch 用于收集此统计信息的 API.不幸的是，它不提供 ram 使用信息.一种解决方案是创建您自己的RAMUsage"指标并实施 ram 使用情况监控服务，该服务将在所有 EC2 实例上运行并将此信息添加到 CloudWatch.

以下是使用 AWS API 在过去 5 分钟内接收CPUUtilization"指标的示例.

<前><代码>var client = AWSClientFactory.CreateAmazonCloudWatchClient(<AWSAccessKey>,<AWSSecretKey>);var 维度 = 新维度{Name = "InstanceId",值 = <InstanceId>,};var request = new GetMetricStatisticsRequest();request.Dimensions.Add(dimension);var currentTime = DateTime.UtcNow;var startTime = currentTime.AddMinutes(-5);request.StartTime = startTime.ToString(AWSSDKUtils.ISO8601DateFormat,CultureInfo.InvariantCulture.DateTimeFormat);request.EndTime = currentTime.ToString(AWSSDKUtils.ISO8601DateFormat,CultureInfo.InvariantCulture.DateTimeFormat);request.Namespace = "AWS/EC2";request.Statistics.Add("最大值");request.Statistics.Add("平均值");request.MeasureName = "CPUUtilization";request.Period = 300;var response = client.GetMetricStatistics(request);if (response.IsSetGetMetricStatisticsResult() &&response.GetMetricStatisticsResult.Datapoints.Count >0){var dataPoint = response.GetMetricStatisticsResult.Datapoints[0];Console.WriteLine("实例:{0} CPU 平均负载:{1} CPU 最大负载:{2}",实例ID，数据点.平均，数据点.最大值)；}

how to get available ram and cpu usage via AWS API?

解决方案

You will need AmazonCloudWatch API for gathering this statistics. Unfortunately, it does not provide ram usage information. One of solutions could be creating your own "RAMUsage" metric and implementing ram usage monitoring service, which will run on all EC2 instances and add this information to CloudWatch.

Here is a sample of receiving "CPUUtilization" metric for last 5 minutes using AWS API.

var client = AWSClientFactory.CreateAmazonCloudWatchClient(
    <AWSAccessKey>,
    <AWSSecretKey>);

var dimension = new Dimension
{
    Name = "InstanceId",
    Value = <InstanceId>,
};

var request = new GetMetricStatisticsRequest();
request.Dimensions.Add(dimension);

var currentTime = DateTime.UtcNow;
var startTime = currentTime.AddMinutes(-5);
request.StartTime = startTime.ToString(
    AWSSDKUtils.ISO8601DateFormat,
    CultureInfo.InvariantCulture.DateTimeFormat);
request.EndTime = currentTime.ToString(
    AWSSDKUtils.ISO8601DateFormat,
    CultureInfo.InvariantCulture.DateTimeFormat);

request.Namespace = "AWS/EC2";
request.Statistics.Add("Maximum");
request.Statistics.Add("Average");
request.MeasureName = "CPUUtilization";
request.Period = 300;

var response = client.GetMetricStatistics(request);

if (response.IsSetGetMetricStatisticsResult() &&
    response.GetMetricStatisticsResult.Datapoints.Count > 0)
{
    var dataPoint = response.GetMetricStatisticsResult.Datapoints[0];
    Console.WriteLine(
        "Instance: {0} CPU Average load: {1} CPU Max load: {2}",
        instanceID,
        dataPoint.Average,
        dataPoint.Maximum);
}

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