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 metrics from various services, including databases like Cassandra, to provide insights into performance and health.
When the Datadog Agent is not collecting Cassandra metrics, you might notice missing data in your dashboards or alerts that rely on Cassandra metrics. This can lead to a lack of visibility into your Cassandra cluster's performance and health.
The primary issue here is that the Datadog Agent is not configured to collect metrics from Cassandra. This could be due to the metrics collection not being enabled or the Agent not having the necessary permissions to access the Cassandra cluster. Without proper configuration, the Agent cannot gather and send the required data to Datadog.
First, ensure that the Cassandra integration is enabled in your Datadog Agent configuration. You can do this by editing the cassandra.d/conf.yaml file located in the conf.d directory of your Datadog Agent installation.
init_config:
instances:
- host: localhost
port: 7199
user: "your_username"
password: "your_password"
Make sure to replace your_username and your_password with the appropriate credentials.
Ensure that the Datadog Agent has the necessary permissions to access the Cassandra cluster. This might involve configuring network access or updating security groups and firewall rules to allow the Agent to communicate with Cassandra.
After making changes to the configuration, restart the Datadog Agent to apply the new settings. You can do this using the following command:
sudo service datadog-agent restart
For more detailed information on configuring the Datadog Agent for Cassandra, refer to the official Datadog Cassandra Integration Documentation.
If you continue to experience issues, consider reaching out to Datadog Support for further assistance.
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