Datadog Agent Agent not collecting disk metrics

What is Datadog Agent Agent not collecting disk metrics

Understanding Datadog Agent

Datadog Agent is a powerful tool designed to collect metrics, logs, and traces from your infrastructure and applications. It acts as a bridge between your systems and Datadog's cloud-based monitoring platform, enabling real-time visibility into your environment. The agent supports a wide range of integrations, allowing you to monitor various aspects of your infrastructure, including CPU, memory, network, and disk usage.

Symptom: Disk Metrics Not Collected

One common issue users encounter is the Datadog Agent not collecting disk metrics. This symptom is observed when expected disk-related data, such as disk usage or I/O statistics, is missing from the Datadog dashboard. This can hinder your ability to monitor disk performance and identify potential bottlenecks or failures.

Identifying the Root Cause

Possible Causes

The primary reasons for this issue include:

Disk metrics collection is not enabled in the Datadog Agent configuration. The agent lacks the necessary permissions to access disk data on the host system.

Checking Configuration

First, verify that disk metrics collection is enabled in the Datadog Agent configuration file. The configuration file is typically located at /etc/datadog-agent/datadog.yaml on Linux systems.

Steps to Resolve the Issue

Enable Disk Metrics Collection

To enable disk metrics collection, follow these steps:

Open the Datadog Agent configuration file:

sudo nano /etc/datadog-agent/datadog.yaml

Ensure the following configuration is present and uncommented:

collect_disk: true

Save the file and exit the editor.

Verify Permissions

Ensure the Datadog Agent has the necessary permissions to access disk data:

Check the user under which the Datadog Agent is running:

ps aux | grep datadog

Ensure this user has read access to the disk devices. You may need to adjust permissions or add the user to relevant groups.

Restart the Agent

After making configuration changes, restart the Datadog Agent to apply them:

sudo systemctl restart datadog-agent

Further Resources

For more detailed information on configuring the Datadog Agent, refer to the official Datadog documentation. Additionally, you can explore the Disk Integration Guide for specific disk monitoring configurations.