Datadog Agent Agent not collecting PostgreSQL metrics

What is Datadog Agent Agent not collecting PostgreSQL metrics

Understanding Datadog Agent

Datadog Agent is a powerful tool designed to collect metrics, logs, and traces from your infrastructure and applications. It provides real-time visibility into your systems, helping you monitor performance and troubleshoot issues effectively. One of its capabilities includes collecting metrics from various databases, including PostgreSQL.

Identifying the Symptom

When the Datadog Agent is not collecting PostgreSQL metrics, you might notice missing data in your Datadog dashboards or alerts related to PostgreSQL performance. This can hinder your ability to monitor database health and performance effectively.

Exploring the Issue

The primary reason for the Datadog Agent not collecting PostgreSQL metrics is that the metrics collection is not enabled, or the agent lacks the necessary permissions to access the PostgreSQL database. Without proper configuration, the agent cannot gather the required data.

Common Error Messages

"PostgreSQL metrics not available" "Permission denied for user"

Steps to Fix the Issue

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

Step 1: Enable PostgreSQL Metrics Collection

Ensure that PostgreSQL metrics collection is enabled in your Datadog Agent configuration. Edit the postgres.yaml file located in the /etc/datadog-agent/conf.d/ directory. Set the enabled parameter to true:

init_config:instances: - host: localhost port: 5432 username: datadog password: <YOUR_PASSWORD> dbname: <YOUR_DB_NAME> sslmode: disable collect_function_metrics: true

Step 2: Verify Database Access

Ensure that the Datadog Agent has the necessary permissions to access the PostgreSQL database. The user specified in the postgres.yaml file should have the appropriate roles and privileges. You can create a dedicated user for Datadog with the following SQL commands:

CREATE USER datadog WITH PASSWORD '<YOUR_PASSWORD>';GRANT SELECT ON ALL TABLES IN SCHEMA public TO datadog;ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO datadog;

Step 3: Restart the Datadog Agent

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

sudo systemctl restart datadog-agent

Step 4: Verify Metrics Collection

Check the Datadog dashboard to ensure that PostgreSQL metrics are now being collected. You can also use the Datadog Agent status command to verify that the integration is active:

datadog-agent status

Additional Resources

For more information on configuring the Datadog Agent for PostgreSQL, refer to the official Datadog PostgreSQL Integration Documentation. If you encounter further issues, the Datadog Community is a great place to seek help and share experiences.