[Pacemaker] Two node KVM cluster

Andrew Beekhof andrew at beekhof.net
Wed May 1 00:12:34 EDT 2013


On 28/04/2013, at 9:19 PM, Oriol Mula-Valls <oriol.mula-valls at ic3.cat> wrote:

> Hi,
> 
> I have modified the previous configuration to use sbd fencing. I have also fixed several other issues with the configuration and now when the node reboots seems not to be able to rejoin the cluster.
> 
> I attach the debug log I have just generated. Node was rebooted around 11:51:41 and came back at 12:52:47.
> 
> The boot order of the services is:
> 1. sbd
> 2. corosync
> 3. pacemaker

It doesn't look like pacemaker was restarted on node1, just corosync.

> 
> Could someone help me, please?
> 
> Thanks,
> Oriol
> 
> On 16/04/13 06:10, Andrew Beekhof wrote:
>> 
>> On 10/04/2013, at 3:20 PM, Oriol Mula-Valls<oriol.mula-valls at ic3.cat>  wrote:
>> 
>>> On 10/04/13 02:10, Andrew Beekhof wrote:
>>>> 
>>>> On 09/04/2013, at 7:31 PM, Oriol Mula-Valls<oriol.mula-valls at ic3.cat>   wrote:
>>>> 
>>>>> Thanks Andrew I've managed to set up the system and currently I have it working but still on testing.
>>>>> 
>>>>> I have configure external/ipmi as fencing device and then I force a reboot doing a echo b>   /proc/sysrq-trigger. The fencing is working properly as the node is shut off and the VM migrated. However, as soon as I turn on the fenced now and the OS has started the surviving is shut down. Is it normal or am I doing something wrong?
>>>> 
>>>> Can you clarify "turn on the fenced"?
>>>> 
>>> 
>>> To restart the fenced node I do either a power on with ipmitool or I power it on using the iRMC web interface.
>> 
>> Oh, "fenced now" was meant to be "fenced node".  That makes more sense now :)
>> 
>> To answer your question, I would not expect the surviving node to be fenced when the previous node returns.
>> The network between the two is still functional?
>> 
> 
> 
> -- 
> Oriol Mula Valls
> Institut Català de Ciències del Clima (IC3)
> Doctor Trueta 203 - 08005 Barcelona
> Tel:+34 93 567 99 77
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