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

[brad at bradandkim.net]

>
> Dear list members,
>
> If I understand well, here are the steps I have to follow to configure a
> fence device that will use SUN ILOM interface :
>
> 1. Ensure that OpenIPMI and OpenIPMI-tools packages are installed on the
> cluster nodes.
> 2. With system-config-cluster tool, add a new fence device of type "IPMI
> Lan". Fill the form with the ILOM IP address, the name of the
> administrator user and his password. Then associate the fence device with
> the cluster node.
> 3. Repeat the step above for the SUN ILOM interface of each node.
> 4. Send the new configuration to the cluster
> 5. That's all and everything will be handle correctly by the cluster.
>
> Am I ok?
>
> Best regards
> __________________
>
> Stephanie Lanthier
>
> Analyste de l'informatique
> Universite du Quebec a Montreal
> Service de l'informatique et des telecommunications
> lanthier.stephanie at uqam.ca
> Téléphone : 514-987-3000 poste 6106
> Bureau : PK-M535
>
>
>
>
>
>
> ------------------------------
>
> Message: 13
> Date: Fri, 10 Aug 2007 14:21:31 -0500 (CDT)
> From: brad at bradandkim.net
> Subject: Re: [Linux-cluster] Add a fence device of type SUN ILOM
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
> 	<56032.129.237.174.144.1186773691.squirrel at webmail.bradandkim.net>
> Content-Type: text/plain;charset=iso-8859-1
>
>
>> 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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>

I believe that will do it.  I just tested shutting down the network
interfaces on one node and fenced successfully used the ipmilan fencing
agent to reboot the node.

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