[Pacemaker] uname eq node-name

[Andrew Beekhof]

On 13/06/2013, at 7:50 AM, "Andreas Mock" <andreas.mock at web.de> wrote:

> Hi Andrew,
> 
> can you tell me what the attribute  #uname is holding?
> Is it the node-name or the 'uname -n' of the node?

The value for uname in <node id=... uname=..../> which contains the name of the node (either "uname -n" or something you chose).
Changing that field to the more generic 'name' name would have been problematic.

> (I justt read
> http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html-single/Pacemaker_
> Explained/index.html#_which_resource_instance_is_promoted)
> 
> Is there an attribute like '#node'or '#nodename'?
> 
> Best regards
> Andreas Mock
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Andrew Beekhof [mailto:andrew at beekhof.net] 
> Gesendet: Mittwoch, 12. Juni 2013 06:45
> An: The Pacemaker cluster resource manager
> Betreff: Re: [Pacemaker] uname eq node-name
> 
> 
> On 12/06/2013, at 2:40 PM, "Andreas Mock" <andreas.mock at web.de> wrote:
> 
>> Hi Andrew,
>> 
>> thank you for that information. You know, often one answer is followed 
>> by many other questions. The same here:
>> 
>> Is there a tool, where a script is able to determine the node name 
>> based on the uname?
>> For a script it is easy to find the nodename (uname -n) it is running 
>> on. But what has to be done when the script needs to know the 
>> node-name it is running on?
> 
> crm_node -n is a good place to start, but requires a running cluster.
> 
>> 
>> Best regards
>> Andreas Mock
>> 
>> 
>> -----Ursprüngliche Nachricht-----
>> Von: Andrew Beekhof [mailto:andrew at beekhof.net]
>> Gesendet: Mittwoch, 12. Juni 2013 00:27
>> An: The Pacemaker cluster resource manager
>> Betreff: Re: [Pacemaker] uname eq node-name
>> 
>> 
>> On 11/06/2013, at 2:33 AM, Andreas Mock <Andreas.Mock at web.de> wrote:
>> 
>>> Hi all,
>>> 
>>> I couldn't find a definitive source stating that a 
>>> corosync/pacemaker/cman cluster must follow the
>>> rule: uname -n == node-name (== DNS-name of communication-IP)
>> 
>> In older versions this is true (an artefact of our heartbeat heritage).
>> However we have been chipping away at that in 1.1.9 and I am currently 
>> running corosync 2.x with pacemaker 1.1.10-rc4 and node-name != uname 
>> -n
>> 
>>> 
>>> Can someone give a hint for related documentation?
>>> 
>>> The question arises when you want to configure a cman based cluster
>>> (cluster.conf) having a uname -n equal to the DNS-name of the 
>>> external ip address but whant to route the cluster communication over 
>>> the internal IP-adresse (cluster interconnect).
>>> I couldn't find a solution that doesn't use the DNS-names of the 
>>> internal ip-addresses as node-names.
>>> 
>>> Hints and rules welcome!
>>> 
>>> Best regards
>>> Andreas Mock
>>> 
>>> 
>>> 
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>>> 
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>>> Bugs: http://bugs.clusterlabs.org
>> 
>> 
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>> 
>> 
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>> 
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>> http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
>> Bugs: http://bugs.clusterlabs.org
> 
> 
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> 
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> 
> 
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> 
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