Configuring Prometheus Storage

Storage Retention

You can configure the storage retention (default: 15d) of Prometheus by setting the package options like the following during package install.

{
  "prometheus": {
    "storage_tsdb_retention": "30d"
  }
}

The above configuration will tell Prometheus to remove old data after 30 days. Refer to this document for more details about storage retention.

DSS Volume

You can configure Prometheus to use a dedicated volume provided by the DC/OS Storage Service (DSS).

At least one volume must be available for Prometheus to use. For more information on creating volumes, see the DC/OS Storage Service documentation.

When configuring Prometheus, select MOUNT for its volume type, choose the minimum size for the volume in MB, and enter the profile for the volume. For more information on volume profiles, see the DC/OS Storage Service documentation.

The following configuration will deploy Prometheus to a volume with a profile of fast that is 25 GB or larger. If there is no such volume available, Prometheus will fail to deploy.

{
  "prometheus": {
    "volume": {
      "type": "MOUNT",
      "size": 25000,
      "profile": "fast"
    }
  }
}