[Linux-cluster] Add a fence device of type SUN ILOM

[Brieseneck, Arne, VF-Group]

Hi Brad,

If it works perfect I'd like to use your configuration for my own SUN
X4100 systems. Can you please send your configuration files?

Thanks a lot 
Arne

-----Original Message-----
From: linux-cluster-bounces at redhat.com
[mailto:linux-cluster-bounces at redhat.com] On Behalf Of
brad at bradandkim.net
Sent: Freitag, 10. August 2007 21:22
To: linux clustering
Subject: Re: [Linux-cluster] Add a fence device of type SUN ILOM


> brad at bradandkim.net wrote:
>
>>>brad at bradandkim.net wrote:
>>>
>>>
>>>>>Quentin Arce wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>>>My machines are SUN Fire X4100. I see that we can define a fence

>>>>>>>>device of type HP ILO. I would like to know if I can use the HP 
>>>>>>>>ILO form in system-config-cluster tool to enter and use a SUN 
>>>>>>>>ILOM as fence device?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>How does ILOM work? telnet or ssh? Is there an snmp interface to 
>>>>>>>ILOM?
>>>>>>>If so, there might be a way...by hacking on another agent.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>So, I'm a lurker on this list as I no longer have a cluster up... 
>>>>>>but I work on ILOM and I would love to see this work.  This isn't

>>>>>>official support, I'm a developer not a customer support person.  
>>>>>>So, it's  more on my time.  If there is anything I can do... 
>>>>>>Please let me know.
>>>>>>Questions on this problem, regarding what ILOM can / can't do, how

>>>>>>to check state of the server via ILOM, etc.
>>>>>>
>>>>>>
>>>>>>
>>>>>Quentin! That is very kind of you. If you help with the ILOM 
>>>>>protocol, I'll help with the agent/script. This thread could form a

>>>>>document on how to write an arbitrary fence agent for use with
rhcs.
>>>>>
>>>>>Where is documentation available? Generally, three things are 
>>>>>needed from a baseboard management device in order to use it for 
>>>>>fencing: 1)  A way to shut the system down, 2) a way to power the 
>>>>>system up, and 3) a way to check if it is up or down.
>>>>>
>>>>>What means can a script use to communicate with the ILOM card? Are 
>>>>>there big delta's in the protocol between different ILOM versions?
>>>>>
>>>>>I look forward to hearing from you.
>>>>>
>>>>>-J
>>>>>
>>>>>
>>>>>
>>>>I am interested in seeing this thread play out as well since I have 
>>>>26 SUN servers I am beginning to cluster.  My question is why use 
>>>>SNMP over IPMI v2.0.  I can do the above three things with:
>>>>
>>>>/usr/bin/ipmitool -U <user> -P <password> -H <ilom IP> chassis power

>>>>off /usr/bin/ipmitool -U <user> -P <password> -H <ilom IP> chassis 
>>>>power on /usr/bin/ipmitool -U <user> -P <password> -H <ilom IP> 
>>>>chassis power status
>>>>
>>>>I don't need any MIB's for this either.  It seems to me this might 
>>>>be  an easier solution than snmp, but I may be missing something.
>>>>
>>>>
>>>>
>>>>
>>>Oh make sure you are using lanplus mode for this.
>>>
>>>
>>>
>>
>>Will do, and thanks.
>>
>>
> That is a nice solution. There is a fence_ipmilan agent in the red hat

> cluster distibution...how are you invoking the above for fencing?  To 
> check if the rh agent works, here is the command line you would use 
> (it installs into /sbin...):
>
> /sbin/fence_ipmilan -a <ilom IP> -l <user> -p <password> -P -o 
> [off,on,reboot,status]
>
> There is a man page for fence_ipmilan that details some extra params.
>
> Well, I guess that solves the issue...if anyone would use an 
> snmp-based ILOM agent, we could talk about how to construct 
> that...otherwise, so much for my idea of this thread being 
> instructions for creating arbitrary agents! ;)
>
> -J
>

I just tested it and it seems to work perfectly.  Sorry for bringing the
thread to a premature end  :)

Brad Crotchett
brad at bradandkim.net
http://www.bradandkim.net

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