[Pacemaker] CoroSync's UDPu transport for public IP addresses?

[Dmitry Koterov]

Sure, in logs I see "adding new UDPU member {IP_ADDRESS}" (so DNS names
are definitely resolved), but in practice the cluster does not work, as I
said above. So validations of ringX_addr in corosync.conf would be very
helpful in corosync.

On Fri, Jan 2, 2015 at 2:49 PM, Jan Friesse <jfriesse at redhat.com> wrote:

> Dmitry,
>
>
>  No, I meant that if you pass a domain name in ring0_addr, there are no
>> errors in logs, corosync even seems to find nodes (based on its logs), And
>> crm_node -l shows them, but in practice nothing really works. A verbose
>> error message would be very helpful in such case.
>>
>
> This sounds weird. Are you sure that DNS names really maps to correct IP
> address? In logs there should be something like "adding new UDPU member
> {IP_ADDRESS}".
>
> Regards,
>   Honza
>
>
>> On Tuesday, December 30, 2014, Daniel Dehennin <
>> daniel.dehennin at baby-gnu.org>
>> wrote:
>>
>>  Dmitry Koterov <dmitry.koterov at gmail.com <javascript:;>> writes:
>>>
>>>  Oh, seems I've found the solution! At least two mistakes was in my
>>>> corosync.conf (BTW logs did not say about any errors, so my conclusion
>>>> is
>>>> based on my experiments only).
>>>>
>>>> 1. nodelist.node MUST contain only IP addresses. No hostnames! They
>>>>
>>> simply
>>>
>>>> do not work, "crm status" shows no nodes. And no warnings are in logs
>>>> regarding this.
>>>>
>>>
>>> You can add name like this:
>>>
>>>      nodelist {
>>>        node {
>>>          ring0_addr: <public-ip-address-of-the-first-machine>
>>>          name: node1
>>>        }
>>>        node {
>>>          ring0_addr: <public-ip-address-of-the-second-machine>
>>>          name: node2
>>>        }
>>>      }
>>>
>>> I used it on Ubuntu Trusty with udpu.
>>>
>>> Regards.
>>>
>>> --
>>> Daniel Dehennin
>>> Récupérer ma clef GPG: gpg --recv-keys 0xCC1E9E5B7A6FE2DF
>>> Fingerprint: 3E69 014E 5C23 50E8 9ED6  2AAD CC1E 9E5B 7A6F E2DF
>>>
>>>
>>
>>
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