Red Hat Bugzilla – Bug 202011
acpi=off required for RHCS nodes, not mentioned in official documentation
Last modified: 2015-04-19 20:47:09 EDT
Description of problem:
According to some posts on email@example.com, by Lon Hohberger, acpi
should be disabled when using integrated fencing (ILO, DRAC, IPMI, etc)
The official documentation does not mention anything in this regard. Can you
please update the documentation to reflect this, if it is a firm requirement
by Red Hat, and explicitly for which modules.
(personally I would include/mention acpi=ht or some less extreme variant of
Postings where acpi=off is mentioned:
HTML-version of where this should probably be added, chapter/section 2.4
Will add to currently published book.
Note that in most cases:
chkconfig --del acpid
... and rebooting should be sufficient to disable ACPI soft-off. Because some
machines do not behave well with "acpi=off" in the kernel command line, it is
probably best left as a last resort rather than an initial fix.
* Some machines have toggles in the BIOS setup which allows you to set the power
button to "soft-off", "4-second off", or "instant-off" - you'll always want
* If acpid is not running (and not enabled during system boot) and the fence
agent still fails to power off the machine immediately, then try adding
"acpi=off" to the kernel boot command line.
Historically, we've told people to do this as well as stop/disable acpid.
Moving this bug to the 4.6 release since 4.5 has already been released.
Created attachment 179601 [details]
Excerpt of section, "Configuring ACPI For Use with Integrated Fence Devices" for new chapter, "Before Configuring a Red Hat Cluster" in Cluster Administration Guide
New content created (see attachment from Comment #10) and reviewed for technical
accuracy. New content will be published with RHEL 4.5 and RHEL 4.6.
Also will be published with currently supported RHEL 5 documentation.
Removing automation notification
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