[Linux-cluster] validity error

Christine Caulfield ccaulfie at redhat.com
Fri Dec 11 11:36:53 UTC 2009

On 11/12/09 11:21, Kaloyan Kovachev wrote:
> On Fri, 11 Dec 2009 10:24:49 +0000, Christine Caulfield wrote
>> On 11/12/09 10:21, Kaloyan Kovachev wrote:
>>> On Fri, 11 Dec 2009 09:58:38 +0000, Christine Caulfield wrote
>>>> On 11/12/09 09:48, Kaloyan Kovachev wrote:
>>>>> On Thu, 10 Dec 2009 16:12:33 +0000, Christine Caulfield wrote
>>>>>> On 10/12/09 15:27, Kaloyan Kovachev wrote:
>>>>>>> Hello,
>>>>>>>      after upgrading to 3.0.6 i get:
>>>>>>> Starting cman... Relax-NG validity error : Extra element cman in
> interleave
>>>>>>> but cluster.conf should be correct and was working so far without
> problems.
>>>>>>> The coresponding section in<cluster>     is:
>>>>>>> <cman expected_votes="7">
>>>>>>>        <multicast addr=""
> keyfile="/etc/cluster/cman_authkey"/>
>>>>>>> </cman>
>>>>>>> how should i change it to pass the validity check?
>>>>>> Remove the keyfile="" attribute. cman ignores it anyway :-)
>>>>> I am sure it was working with RHCM v2, so it seems i will need to
> rewrite the
>>>>> config for V3, as i get another error now about specifying multicast
> interface
>>>>> for clusternode and there will be others for sure
>>>> Yes, it would work fine under v2. In fact it's working now - you're just
>>>> getting a warning message (I hope!). We have added a lot more checks to
>>>> the configuration to try and help invalid configurations from being run
>>>> and causing trouble.
>>> when starting the cluster i get just warnings, but updating the config and
>>> using cman_tool version -r cman doesn't reload it, so i am forced to fix my
>>> errors :)
>>>>>> If you need to specify an encrpytion key it should go into the<totem>
>>>>>> part of cluster.conf.
>>>>> looking at cluster.rng keyfile is valid for the cman block. May i just
> move it
>>>>> there or i should create<totem>
>>>> I would just remove it. It's not doing anything, so if you move it to
>>>> <totem>   you will change the encryption key used by the cluster and have
>>>> to reboot all your nodes to get them communicating again.
>>> The cluster is not a production one, so it is OK and am looking for the
>>> correct end result. My question was actually 'Is encription key valid/used
>>> only from<totem>   section or in<cman>   too as described in cluster.rng file'.
>>> Multicast and keyfile are present in both<cman>   and<totem>   ... i guess
>>> <totem>   is the preferred one for future compatibility?
>> Confusingly, multicast must be part of<cman>  and keyfile should be part
>> of<totem>.
>> That's just how it is, sorry ;-)
> Thanks. The validation schema should be updated then, as it allows keyfile in
> cman too (fixed in my copy and could provide a patch).

Hmm. I am totally wrong. Very sorry. keyfile IS allowed in cluster3, it 
overrides the one assigned in totem. In which case I'm not sure why it's 
failing to validate on your system.

The schema is a bit of a work-in-progress at the moment, which is why it 
warns rather than fails if it finds an error. Did it work when you 
removed keyfile ?

> I still can't find how do i specify per node interface. There is interface
> allowed only in<totem>  section while most of the nodes have (and use) bond0,
> for one of them i need to specify different interface for cluster
> communication. Is per node interface attribute missed from the validation
> schema or is removed completely?

cman always binds to the address of the host given as a node name. see



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