[Pacemaker] CMAN with multiple networks for HA communication

[Teerapatr Kittiratanachai]

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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>>
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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?
>
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
>
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org