# Amazon Elastic Compute Cloud（EC2）实例
<a name="component-configuration-examples-ec2"></a>

以下示例演示适用于 Amazon EC2 实例的 JSON 格式组件配置。

**重要**  
当 Amazon EC2 实例进入 `stopped` 状态时，表示已将它从监控中移除。当它恢复为 `running` 状态时，会将它添加到 CloudWatch Application Insights 控制台 **Application details**（应用程序详细信息）页面上的 **Unmonitored components**（未监控组件）列表中。如果为应用程序启用了自动监控新资源，则会将该实例添加到 **Monitored components**（已监控组件）列表中。但会将日志和指标设置为工作负载的默认值。不会保存之前的日志和指标配置。

```
{
    "alarmMetrics" : [
      {
        "alarmMetricName" : "CPUUtilization",
        "monitor" : true
      }, {
        "alarmMetricName" : "StatusCheckFailed"
      }
    ],
    "logs" : [
      {
        "logGroupName" : "my_log_group",
        "logPath" : "C:\\LogFolder\\*",
        "logType" : "APPLICATION",
        "monitor" : true
      },
      {
        "logGroupName" : "my_log_group_2",
        "logPath" : "C:\\LogFolder2\\*",
        "logType" : "IIS",
        "encoding" : "utf-8"
      }
    ],
    "processes" : [
        {
            "processName" : "my_process",
            "alarmMetrics" : [
                {
                    "alarmMetricName" : "procstat cpu_usage",
                    "monitor" : true
                }, {
                    "alarmMetricName" : "procstat memory_rss",
                    "monitor" : true
                }
            ]
        }
    ],
    "windowsEvents" : [
      {
        "logGroupName" : "my_log_group_3",
        "eventName" : "Application",
        "eventLevels" : [ "ERROR", "WARNING", "CRITICAL" ],
        "monitor" : true
      }, {
        "logGroupName" : "my_log_group_4",
        "eventName" : "System",
        "eventLevels" : [ "ERROR", "WARNING", "CRITICAL" ],
        "monitor" : true
    }],
     "alarms" : [
      {
        "alarmName" : "my_instance_alarm_1",
        "severity" : "HIGH"
      },
      {
        "alarmName" : "my_instance_alarm_2",
        "severity" : "LOW"
      }
    ],
     "subComponents" : [
     {
       "subComponentType" : "AWS::EC2::Volume",
       "alarmMetrics" : [
       {
         "alarmMetricName" : "VolumeQueueLength",
         "monitor" : "true"
       },
       {
         "alarmMetricName" : "VolumeThroughputPercentage",
         "monitor" : "true"
       },
       {
         "alarmMetricName" : "BurstBalance",
         "monitor" : "true"
       }]
    }]
  }
```