Lenovo Flex SystemChassis Management Module 2 command-line interface: introduction

The Lenovo Flex SystemChassis Management Module 2 (CMM) command-line interface (CLI) provides direct access to Flex System management functions as an alternative to using the web-based user interface.

The Lenovo Chassis Management Module 2 supports multiple Flex System chassis types. The CMM automatically detects the chassis type where it is installed. The CMM firmware adjusts the features and command options it supports based on its operating environment.

Using the CLI, you can issue commands to control the power and configuration of the CMM and other components that are in a Flex System chassis. The command-line interface also provides access to the text-console command prompt on each compute node through a Serial over LAN (SOL) connection.

Note:

Unless otherwise noted, the term "CMM" in this document refers to all CMM types.
The CMM 2 is also called the CMM II.

You access the CMM CLI through a direct serial or Ethernet connection to the CMM, through a Telnet connection to the IP address of the CMM, or through a Secure Shell (SSH) connection to the CMM. You can initiate connections from the client system by using standard remote communication software; no special programs are required. You must authenticate with the CMM before you issue commands. You enter commands one at a time; however, you can use command scripting to enter multiple commands. The CLI does not support keyboard shortcuts, except for the special key sequence, Esc (, that terminates an SOL session.

Important: When interfacing with the CMM through an external script-based interface, observe the following restrictions to improve CMM reliability:

Allow ample time for component discovery after the CMM starts, CMM failover, or addition of new hardware to a Flex System chassis.
Do not poll the CMM for specific data more than once every 15 minutes.
Do not run concurrent scripting sessions with the CMM.

The most recent versions of all Lenovo Flex System documentation are available at Lenovo Flex Information Center website.

IBM Redbooks publications are developed and published by the IBM International Technical Support Organization (ITSO). The ITSO develops and delivers skills, technical know-how, and materials to technical professionals, Business Partners, clients, and the marketplace in general. For IBM Redbooks publications for your Lenovo Flex System product, go to "IBM redbooks" website.

Introduction