[Pacemaker] CMAN with multiple networks for HA communication

[Digimer]

Using raw IPs is not recommended. I remember Chrissie explaining the 
reason why a couple of years ago, but I can't remember that reasoning 
right not.

As for multiple altname's, that is not possible. Corosync's RRP 
(redundant ring protocol) supports a primary and backup ring only.

digimer

On 19/06/14 11:24 PM, Teerapatr Kittiratanachai wrote:
> I just already try this. It work !!
> I don't understand that why there is no example in the Internet using
> IP address as node name or altname.
>
> But I cann't add more than one altname, can you give me the xml
> example or the ccs command ?
>
> Thanks
> --Te
>
> On Fri, Jun 20, 2014 at 9:56 AM, Digimer <lists at alteeve.ca> wrote:
>> Strictly speaking, it might be possible, but I haven't tried it myself and I
>> certainly don't recommend it.
>>
>>
>> On 19/06/14 10:29 PM, Teerapatr Kittiratanachai wrote:
>>>
>>> Great, It work.
>>>
>>> Is it possible to use IP address as node name or altname?
>>> But I guess not.
>>>
>>> --Te
>>>
>>> On Thu, Jun 19, 2014 at 9:20 PM, Digimer <lists at alteeve.ca> wrote:
>>>>
>>>> On 19/06/14 08:00 AM, Teerapatr Kittiratanachai wrote:
>>>>>
>>>>>
>>>>> Dear List,
>>>>>
>>>>> According to CMAN identify each node in cluster by hostname.
>>>>> So I configure the IP address in /etc/hosts file as below.
>>>>>
>>>>> ...
>>>>> 172.16.7.1    node00.example.com
>>>>> 172.16.7.2    node01.example.com
>>>>> ...
>>>>>
>>>>> So the corosync member show as below
>>>>>
>>>>> [root at node00 ~]# corosync-objctl | grep member
>>>>> runtime.totem.pg.mrp.srp.members.2.ip=r(0) ip(172.16.7.2)
>>>>> runtime.totem.pg.mrp.srp.members.2.join_count=1
>>>>> runtime.totem.pg.mrp.srp.members.2.status=joined
>>>>> runtime.totem.pg.mrp.srp.members.1.ip=r(0) ip(172.16.7.1)
>>>>> runtime.totem.pg.mrp.srp.members.1.join_count=1
>>>>> runtime.totem.pg.mrp.srp.members.1.status=joined
>>>>>
>>>>> My question is, is it possible to add more than one network for the HA
>>>>> communicate between these nodes?
>>>>> e.g. if 172.16.7.0/30 is down. And another network, which be main
>>>>> access network, still be up. the HA will use UP network to talk
>>>>> instead of the down one.
>>>>>
>>>>> Thank you in advance.
>>>>>
>>>>> Regards,
>>>>> Teerapatr Kittiratanachai (Te)
>>>>
>>>>
>>>>
>>>> You're asking about setting up corosync's redundant ring protocol,
>>>> correct?
>>>> If so, yes. You can use cman's 'altname' element to add a second name for
>>>> the node, and then have that name resolve to the network you want to use
>>>> as
>>>> the backup link.
>>>>
>>>> --
>>>> Digimer
>>>> Papers and Projects: https://alteeve.ca/w/
>>>> What if the cure for cancer is trapped in the mind of a person without
>>>> access to education?
>>>>
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>>>
>>>
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>>>
>>
>>
>> --
>> Digimer
>> Papers and Projects: https://alteeve.ca/w/
>> What if the cure for cancer is trapped in the mind of a person without
>> access to education?
>>
>> _______________________________________________
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>>
>> Project Home: http://www.clusterlabs.org
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>> Bugs: http://bugs.clusterlabs.org
>
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>
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> Bugs: http://bugs.clusterlabs.org
>


-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without 
access to education?