[Linux-cluster] Network failure results clusterenvironmentunstable & fragile

Pena, Francisco Javier francisco_javier.pena at roche.com
Tue Feb 28 14:03:17 UTC 2006

> On Mon, 2006-02-27 at 20:28 -0500, Lon Hohberger wrote:
> > On Mon, 2006-02-27 at 09:22 +0100, Pena, Francisco Javier wrote:
> > > Hi Deval,
> > > 
> > > If you are using iLO fencing, you could try the latest 
> fence package 
> > > (1.32.10). I have seen a similar problem, and it is 
> because recent 
> > > iLO firmware versions behave a little different (they try 
> to make a 
> > > soft restart instead of a hard reboot).
> > 
> > Also, if you're using iLO fencing, make sure you boot with acpi=off 
> > (see /etc/grub.conf) and have acpid stopped.  (e.g. 
> chkconfig --level 
> > 2345 acpid off)
> > 
> > ACPI soft-poweroff (which iLO tries to do) is exactly what 
> you do not 
> > want in a cluster.
> Wow, this sounds fairly important, but I do not see this 
> mentioned in the RHCS-4 "Configuring and Managing a Cluster" 
> documentation when I look at the setup for ILO fencing.  
> Where is this documented so others deploying HP Proliants 
> don't fall into a trap?  :)
> /Brian/

Well, as far as I have been able to check, this is not necessary if you
running the latest version of the fence package. Previous versions with
iLO firmware (1.75+) caused this ACPI soft-poweroff issue (they were
a power button press, instead of a "press and hold for a few seconds").

I would just be happy if they added the perl-Crypt-SSLeay package as a 
Dependency to the fence package. If it is not installed, you may have a
surprise when trying to fence off a node using the iLO :).


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