[Pacemaker] Unnecessary shuffling of master/slave resources and maybe a split brain
Adrian Chapela
achapela.rexistros at gmail.com
Wed Dec 3 17:51:58 UTC 2008
Adrian Chapela escribió:
> Andrew Beekhof escribió:
>> You created bug 2003 for this right? Or is this another case?
>>
>
> Yes, I created this bug. I will test this afternoon if it is possible.
I tested today and I reopened the bug because the bug is still present
for the case of unplugging an ethernet cable.
>
> Thank you!
>> On Thu, Nov 20, 2008 at 19:49, Adrian Chapela
>> <achapela.rexistros at gmail.com> wrote:
>>
>>> Dominik Klein escribió:
>>>
>>>> Adrian Chapela wrote:
>>>>
>>>>> Dominik Klein escribió:
>>>>>
>>>>>>> What are you saying me ? I should have another communication
>>>>>>> channel as
>>>>>>> a COM port... I could test this with a null modem cable.
>>>>>>>
>>>>>> You need at least 2 connections between the nodes. It never was
>>>>>> different.
>>>>>>
>>>>>> It once was true that a null modem oder serial cable as the second
>>>>>> connection was enough - from my _personal_ experience, having 2
>>>>>> ethernet
>>>>>> connections is better (because faster and able to cope with the
>>>>>> rather high
>>>>>> traffic of v2 (pacemaker)).
>>>>>>
>>>>> I tested two options. I think the best option is a second ethernet
>>>>> card.
>>>>> I have configured this option but I saw that my cluster didn't do a
>>>>> failover.
>>>>> The two connections are in different networks (One in 192.168.18.X
>>>>> and
>>>>> other in 172.16.1.0) but I don't know why pingd isn't going down
>>>>> all of
>>>>> resources.
>>>>>
>>>>> I have this connectivity constraint:
>>>>> <rsc_location id="mail-connectivity" rsc="Mail-drbd">
>>>>> <rule id="mail-pingd-prefer-rule" score="-INFINITY"
>>>>> role="Master">
>>>>> <expression id="mail-pingd-prefer"
>>>>> attribute="pingd" operation="lt" value="1000"/>
>>>>> </rule>
>>>>> </rsc_location>
>>>>>
>>>>>
>>>>>
>>>>> <rsc_location id="samba-connectivity" rsc="Samba-drbd">
>>>>> <rule id="samba-pingd-exclude-rule" score="-INFINITY" >
>>>>> <expression id="samba-pingd-exclude"
>>>>> attribute="pingd" operation="lt" value="1000"/>
>>>>> </rule>
>>>>> </rsc_location>
>>>>>
>>>>> And this colocation:
>>>>> <rsc_colocation id="mail_drbrd_rule" rsc="Mail" with-rsc="Mail-drbd"
>>>>> with-rsc-role="Master" score="INFINITY"/>
>>>>> <rsc_colocation id="samba_drbrd_rule" rsc="Samba"
>>>>> with-rsc="Samba-drbd"
>>>>> with-rsc-role="Master" score="INFINITY"/>
>>>>>
>>>>> The node lost connectivity with 192.168.18.0 (I defined all host
>>>>> in this
>>>>> network for pingd) and pingd value should be less than 1000.
>>>>>
>>>> Should be or is?
>>>>
>>> It could be a problem with pingd again, I couldn't see pingd
>>> updating the
>>> value.
>>> I have attached hb_report.
>>>
>>>> Could you post your xml including the status section in this
>>>> situation?
>>>> Regards
>>>> Dominik
>>>>
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>>
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