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systems management

DELL POWER SOLUTIONS | November 2007

Reprinted from

Dell Power Solutions,

3. In the LAN User Configuration options, set the Account Access param-

eter to Enabled and the Account Privilege parameter to Admin, and

enter a password (see Figure 3).

4. Press the Esc key, save changes, and exit the utility.

Installing and using IPMItool

Administrators can download the latest version of IPMItool from

sourceforge.net/projects/ipmitool or linux.dell.com/files/openipmi/

ipmitool. They can then install it using the command rpm -ivh

packagename.

IPMItool provides interfaces for both local and remote server man-

agement. For local management, it uses the Keyboard Controller Style

(KCS) interface, often called the open interface, which requires the

OpenIPMI kernel driver. Administrators can set IPMItool to use this

interface by including the -I open option in their commands:

ipmitool -I open command

For remote management, IPMItool uses either the lan or lanplus inter-

face. These interfaces are used to communicate with BMCs over an

Ethernet LAN connection using User Datagram Protocol (UDP) under IP

version 4 (IPv4). These UDP packets are formatted to contain IPMI request/

response messages with IPMI session headers and Remote Management

and Control Protocol (RMCP) headers, which support management in

environments without an OS. The difference between the lan and lanplus

interfaces is that lanplus uses RMCP+, providing enhanced authentication

and data integration checks.

The format for using commands with these interfaces is as follows:

ipmitool –I interface –H ipaddress -U username

-P password command

In this command, interface is lan or lanplus, ipaddress is

the IP address of the remote BMC, username and password are the

administrative username and password, and command is the command

the administrator wants to run. If the password is set as the

IPMI_PASSWORD environment variable, the command format changes

to the following:

ipmitool –I interface –H ipaddress -U username

-E command

Administrators can get help with a specific command using the fol-

lowing format:

ipmitool –I interface –H ipaddress -U username

-P password command help

For example, if during the Remote Access Configuration Utility setup

the username was defined as “root” and the password was defined as

“calvin” (see Figure 3), administrators could display the system event log

using the following command:

ipmitool –I lanplus –H 172.31.128.11 –U root

–P calvin sel list

By default, the IPMItool open interface works only with root privileges

because the device /dev/ipmi0 is set with root ownership. Administrators

can make IPMItool accessible for ordinary users as follows:

1. Create a user group using the command groupadd groupname

(where groupname is the name of the new group).

2. Change the group for /dev/ipmi0 using the following command:

chgrp groupname /dev/ipmi0

Figure 2. LAN Parameters options in the Remote Access Conﬁguration

Utility

Figure 3. LAN User Conﬁguration options in the Remote Access

Conﬁguration Utility

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