Installation guide

Note

This is the preferred method of disabling ACPI Soft-Off.

Disable ACPI Soft-Off with chkconfig management at each cluster node as follows:

1. Run either of the following commands:

chkconfig --del acpid — T his command removes acpid from chkconfig

management.

— OR —

chkconfig --level 2345 acpid off — T his command turns off acpid.

2. Reboot the node.

3. When the cluster is configured and running, verify that the node turns off immediately when

fenced.

Note

You can fence the node with the fence_node command or Conga.

2.3.2. Disabling ACPI Soft-Off with the BIOS

The preferred method of disabling ACPI Soft-Off is with chkconfig management (Section 2.3.1,

“Disabling ACPI Soft-Off with chkconfig Management”). However, if the preferred method is not

effective for your cluster, follow the procedure in this section.

Note

Disabling ACPI Soft-Off with the BIOS may not be possible with some computers.

You can disable ACPI Soft-Off by configuring the BIOS of each cluster node as follows:

1. Reboot the node and start the BIOS CMOS Setup Utility program.

2. Navigate to the Power menu (or equivalent power management menu).

3. At the Power menu, set the Soft -Off by PWR-BT TN function (or equivalent) to Instant-Off (or

the equivalent setting that turns off the node via the power button without delay). Example 2.11,

“BIOS CMOS Setup Utility: Soft-Off by PWR-BTTN set to Instant-Off” shows a Power menu

with ACPI Function set to Enabled and Soft-Off by PWR-BT T N set to Instant-Off.

Note

The equivalents to ACPI Function, Soft -Off by PWR-BT T N, and Instant-Off may vary

among computers. However, the objective of this procedure is to configure the BIOS so that

the computer is turned off via the power button without delay.

4. Exit the BIOS CMOS Setup Utility program, saving the BIOS configuration.

5. When the cluster is configured and running, verify that the node turns off immediately when

fenced.

Red Hat Enterprise Linux 4 Cluster Administration