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4.12.2. Disabling ACPI Soft-Off with the BIOS
The preferred method of disabling ACPI Soft-Off is with
chkconfig management (Section 4.12.1, “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:
- Reboot the node and start the
BIOS CMOS Setup Utilityprogram. - Navigate to the menu (or equivalent power management menu).
- At the menu, set the function (or equivalent) to (or the equivalent setting that turns off the node by means of the power button without delay). Example 4.1, “
BIOS CMOS Setup Utility: set to ” shows a menu with set to and set to .Note
The equivalents to , , and may vary among computers. However, the objective of this procedure is to configure the BIOS so that the computer is turned off by means of the power button without delay. - Exit the
BIOS CMOS Setup Utilityprogram, saving the BIOS configuration. - When the cluster is configured and running, verify that the node turns off immediately when fenced. For information on testing a fence device, see How to test fence devices and fencing configuration in a RHEL 5, 6, or 7 High Availability cluster?.
Example 4.1. BIOS CMOS Setup Utility: set to
+---------------------------------------------|-------------------+ | ACPI Function [Enabled] | Item Help | | ACPI Suspend Type [S1(POS)] |-------------------| | x Run VGABIOS if S3 Resume Auto | Menu Level * | | Suspend Mode [Disabled] | | | HDD Power Down [Disabled] | | | Soft-Off by PWR-BTTN [Instant-Off | | | CPU THRM-Throttling [50.0%] | | | Wake-Up by PCI card [Enabled] | | | Power On by Ring [Enabled] | | | Wake Up On LAN [Enabled] | | | x USB KB Wake-Up From S3 Disabled | | | Resume by Alarm [Disabled] | | | x Date(of Month) Alarm 0 | | | x Time(hh:mm:ss) Alarm 0 : 0 : | | | POWER ON Function [BUTTON ONLY | | | x KB Power ON Password Enter | | | x Hot Key Power ON Ctrl-F1 | | | | | | | | +---------------------------------------------|-------------------+
This example shows set to , and set to .
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