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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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