Datadog Agent Agent not collecting Linux metrics

What is Datadog Agent Agent not collecting Linux metrics

Understanding Datadog Agent

The Datadog Agent is a lightweight software that runs on your hosts. It collects events and metrics from your hosts and sends them to Datadog, where you can analyze and visualize them. The Agent can collect system metrics, custom metrics, and logs, providing a comprehensive view of your infrastructure's performance.

Identifying the Symptom

One common issue users encounter is the Datadog Agent not collecting Linux metrics. This can manifest as missing data in your Datadog dashboards or alerts not triggering as expected. You might notice that metrics such as CPU usage, memory usage, or disk I/O are not being reported.

Common Observations

Missing Linux-specific metrics in Datadog dashboards.Alerts based on Linux metrics not triggering.Gaps in metric data for Linux hosts.

Exploring the Issue

The root cause of this issue is often that Linux metrics collection is not enabled or is misconfigured. The Datadog Agent requires specific configurations to collect and report Linux metrics. If these configurations are not set correctly, the Agent will not be able to gather the necessary data.

Configuration Files

The Agent's configuration files, typically located in /etc/datadog-agent/, need to be correctly set up to enable Linux metrics collection. Key files include datadog.yaml and any integration-specific configuration files.

Steps to Fix the Issue

To resolve the issue of the Datadog Agent not collecting Linux metrics, follow these steps:

Step 1: Verify Configuration

Open the datadog.yaml file located in /etc/datadog-agent/.Ensure that the collect_linux_metrics option is set to true. If this option is missing, add it under the system_probe_config section:

system_probe_config: enabled: true collect_linux_metrics: true

Step 2: Restart the Agent

After updating the configuration, restart the Datadog Agent to apply the changes:

sudo systemctl restart datadog-agent

Step 3: Verify Metrics Collection

Check the Datadog dashboard to ensure that Linux metrics are now being collected. You can also verify the Agent's status by running:

sudo datadog-agent status

This command will provide detailed information about the Agent's current state and any errors encountered.

Additional Resources

For more detailed information on configuring the Datadog Agent for Linux metrics, refer to the official Datadog documentation. If you continue to experience issues, consider reaching out to Datadog Support for further assistance.