Dejan Muhamedagic wrote:
> On Fri, May 11, 2007 at 10:04:11AM +0200, Th.Paschy, hepasoft oHG wrote:
>> Hi all,
>>
>> I am a new user of heartbeat.
>>
>> I configure an active/passive cluster with too Dell PE1900 based on SuSE
>> linux with heartbeat 2.0.8 (r1-style). After some problems by DRBD resources
>> after a cold reset of the master node (not removed locks), which was fixed
>> by Phillipp Reissner last weekend all works fine.
>>
>> At next I was looking for a stonith module for the Dell Remote Access
>> Controller DRAC 5 but I find only one for the drac3. Inside the drac5 the
>> layout of the embedded Web-Interface have been changed, so the drac3 module
>> won't work.
>>
>> So I've write my own module strongly based on the acpmaster module. The
>> module uses the SM-CLP command line interface of the drac5 via telnet. I'm
>> really not a good C-programmer but it works perfectly.
>>
>> But there would be one problem (and with the drac3 module it would be too),
>> if the server lost power connection. So the Remote Access Card won't be
>> accessible and the fencing process will never been stopped and so no
>> resource take_over take place, unless you manually take corrective action.
>> So a redundant power supply would be strongly recommend.
>>
>> I've seen that other users are looking for a drac5 module too, so I've
>> attached the source of the drac5 module.
>
> Thanks for the contribution! Alan will probably want to the usual
> legal chanting.
I'll send you an email on this.
>> It would be glad, if some one could tell me a way, how I can handle the
>> described problem on never endings fencing, if the access to the drac will
>> loss (cause of power lost or the network connection would fail).
>
> Unfortunately, there's no workaround. If heartbeat cannot stonith
> the node, it will go on trying forever. If stonith is configured,
> we must make sure that the node is rebooted or shutdown. If the
> stonith device is not accessible, well, too bad. The UPS based
> stonith devices are definitely preferable to the lights-out
> embedded kind.
Sometime in the past, I asked Andrew for a feature which would allow the
takeover to proceed after a certain number of failed STONITHs, if things
were configured to allow that. I don't remember whether he did that or not.
For these kind of cases, it seems like a good thing.
--
Alan Robertson <[EMAIL PROTECTED]>
"Openness is the foundation and preservative of friendship... Let me
claim from you at all times your undisguised opinions." - William
Wilberforce
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