[Pacemaker] iLO2 stonith device

[Aaron Bush]

Here are some comments from Dejan back on November 5th, 2008 when I had a similar question about ILO.  It may help shed some light on this.  You can look in the archives for around the same time and maybe get some good info.

-ab

> Note that handling of clones is done on a different level, i.e.
> by the CRM which decides where to run resources. The idea of
> cloned stonith resources was to have "more" assurance that one of
> the nodes which run the stonith resource may shoot the offending
> node. Obviously, this may make sense only for clusters with more
> than two nodes. On the other hand, if your stonith devices are
> reliable and regularly monitored, I don't see any need for
> shooting a node from more than one node. So, with the lights-out
> devices which are capable of managing only its host (iLO, IBM
> RSA, DRAC) I'd suggest having a normal (non-cloned) stonith
> resource with a -INF constraint to prevent it from running on the
> node it can shoot. This kind of power management setup seems to
> be very popular and probably prevails today.
> 
> On larger clusters with stonith devices which may shoot a set of
> nodes, a single cloned resource should suffice.
> 
> Does this help? A bit at least? 

> -----Original Message-----
> From: Adrian Chapela [mailto:achapela.rexistros at gmail.com] 
> Sent: Thursday, March 12, 2009 12:14 PM
> To: pacemaker at oss.clusterlabs.org
> Subject: Re: [Pacemaker] iLO2 stonith device
> 
> Dejan Muhamedagic escribió:
> > Hi,
> >
> > On Thu, Mar 12, 2009 at 02:32:59PM +0100, Andrew Beekhof wrote:
> >   
> >> On Wed, Mar 11, 2009 at 17:13, Adrian Chapela
> >> <achapela.rexistros at gmail.com> wrote:
> >>     
> >>> One more time.
> >>>
> >>> I have decided to use external/riloe as my stonith device 
> but I have some
> >>> doubts. My system will be a cluster of two nodes.
> >>>
> >>> First, Do I need to config riloe stonith as a clone ?
> >>>       
> >> not required, but its an option that may (or may not) simplify the
> >> configuration
> >>     
> >
> > Not much in a two-node configuration. Instead of a clone, there
> > is a primitive and a location constraint.
> >   
> Ok, if I understood well I need to have two primitives (or 
> clones if I 
> want) one for each device. Of course I need to run the 
> stonith device of 
> nodeA in nodeB, is this true ?
> 
> And, I am not sure about this kind of stonith because: we 
> need a normal 
> interface (better if is redunded as  a bonding for example) 
> to access to 
> iLO server interfaces but in each server there is only one 
> iLO device. 
> If you have two switchs to achieve high availability, you 
> will need two 
> devices... Other option could be two switchs, one for each 
> ethernet card 
> on each server (two cards by server) and then one iLO device to one 
> switch and one to another switch. What do you think about 
> this solution 
> ? Could be reliable ?
> >   
> >>> Second, this stonith device have some parameters of 
> configuration: hostlist,
> >>> ilo_hostname, ilo_user, ilo_password, ilo_can_reset, ilo_protocol,
> >>> ilo_powerdown_method. All of examples I have seen have in 
> hostlist one node
> >>> Is this a list or is a hostname ?. Is ilo_hostname a 
> hostname to access to
> >>> ilo device ? Could have only one stonith clone for two nodes ?
> >>>       
> >> You'd have to look at the code.
> >> I dont know it personally, but one would hope that with a name like
> >> hostlist it should support a list.
> >>     
> >
> > ilo_hostname is the ip address of the ilo device.
> >   
> 
> >   
> >>> The last question is about the license of the iLO2 card. 
> Do I need a license
> >>> to use this card as a poweroff device ? I think not 
> because riloe is
> >>> accessing iLO2 by https but I have downloaded a 60 trial 
> license and now I
> >>> can't try that. Has someone the answer ?
> >>>       
> >> -ENOIDEA
> >>     
> >
> > Didn't know one needed a license for an ilo device.
> >   
> I have tested today with another server without iLO Advanced 
> license and 
> I can shutdown the server. The license only is needed to have 
> a remote 
> console that is like a remote kvm. It is very good but it 
> isn't needed 
> in Linux HA.
> > Thanks,
> >
> > Dejan
> >
> > _______________________________________________
> > Pacemaker mailing list
> > Pacemaker at oss.clusterlabs.org
> > http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> >
> >   
> 
> 
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