Log Service:Collect metric data from hosts

Limits

• Windows servers are not supported.
• Metric data about GPUs and hardware status cannot be collected.
• Only Linux Logtail V0.16.40 and later can collect host metric data. If you have installed an earlier version of Logtail on your server, you must update Logtail to a supported version. For more information, see Update Logtail online.

Procedure

1. Log on to the Log Service console.
2. In the Import Data section, click the Monitoring Data tab. Then, click Host Monitoring Data.
3. Select the project and Metricstore and click Next.
4. Create a machine group.
   • If a machine group is available, click Use Existing Machine Groups.
   • If no machine groups are available, perform the following steps to create a machine group. In this example, an Elastic Compute Service (ECS) instance is used.
     1. On the ECS Instances tab, select Manually Select Instances. Then, select the ECS instance that you want to use and click Create.

        For more information, see Install Logtail on ECS instances.

        Important If you want to collect logs from an ECS instance that belongs to a different Alibaba Cloud account, a server in an on-premises data center, or a server of a third-party cloud service provider, you must manually install Logtail. For more information, see Install Logtail on a Linux server. After you manually install Logtail, you must configure a user identifier for the server. For more information, see Configure a user identifier.
     2. After Logtail is installed, click Complete Installation.
     3. In the Create Machine Group step, configure the Name parameter and click Next.

        Log Service allows you to create IP address-based machine groups and custom identifier-based machine groups. For more information, see Create an IP address-based machine group and Create a custom identifier-based machine group.

5. Select the new machine group from Source Server Groups and move the machine group to Applied Server Groups. Then, click Next.
   Important If you apply a machine group immediately after you create the machine group, the heartbeat status of the machine group may be FAIL. This issue occurs because the machine group is not connected to Log Service. To resolve this issue, you can click Automatic Retry. If the issue persists, see What do I do if no heartbeat connections are detected on Logtail?
6. In the Specify Data Source step, configure Config Name and Plug-in Config. Then, click Next.
   inputs is required and is used to configure the data collection settings for the Logtail configuration.

   Note You can configure only one type of data source in inputs.

   {
       "inputs": [
           {
               "detail": {
                   "IntervalMs": 30000
               },
               "type": "metric_system_v2"
           }
       ]
   }

   Parameter	Type	Required	Description
   type	string	Yes	The type of the data source. Set the value to metric_system_v2.
   IntervalMs	int	Yes	The interval between two consecutive requests. Unit: milliseconds. The value must be greater than or equal to 5000. We recommend that you set the value to 30000.

Metrics