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



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 redhat com
[mailto:linux-cluster-bounces redhat com] On Behalf Of
brad 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 bradandkim net wrote:
>
>>>brad 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 bradandkim net
http://www.bradandkim.net

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