AMPS Monitoring Guide

This guide is a quick reference to the information monitored by the AMPS administrative interface. It includes information on the RESTful AMPS interface as well as the information recorded in the AMPS statistics database.

For use with the AMPS administrative interface, the guide is intended to be a guide to help you understand the information presented in the interface. Likewise, when working with the statistics database, the guide is intended to provide a quick reference to the metrics in the database.

The guide is organized in the same way that the administrative interface is:

• Administrative Actions - This section describes the administrator resource in the administrative console. That resource provides the ability to change the state of the AMPS instance, and also generate diagnostic information to be written to the logs. There is no corresponding information in the statistics database.

• Host Statistics - This section describes the host resource in the administrative console and the host tables in the statistics database (the tables prefixed with H). These metrics collect information about the host system.

• AMPS Instance Statistics - This section describes the instance resource in the administrative console and the instance tables in the statistics database (the tables prefixed with I). These metrics collect information about the AMPS instance that is collecting the statistics.

Resource Mapping

The guide is designed to make it easy to locate a particular resource.

RESTful Administrative Interface

To find the correct URI for a particular resource, you can start with the guide to find the path to the area, then use a browser to find the path to the specific resource you are looking for. For example, to find information about a specific drive, you might use the following steps:

• Drive information is managed by the host, rather than a specific instance, so the information will be located in the host interface.

• Within the host section of the guide, the information for drives is listed under the disks heading.

Therefore, to start exploring information about drives attached to the host, you would use the /amps/host/disks path in a browser to locate a specific device and the information about this device.

Statistics Database

To find the correct table for a particular resource, you can start with the guide to find the path to the area, then use sqlite3 or amps-sqlite to query the information for that resource. For example, to find information about a specific drive, you might use the following steps:

• Drive information is managed by the host, rather than a specific instance, so the table that holds the information will have an H prefix.

• Within the host section of the guide, the information for drives is listed under the disks heading.

Therefore, to find information about drives, you would start with the HDISKS view (in amps-sqlite) or the HDISKS_* family of tables (in sqlite3).