[Pacemaker] uname eq node-name

[Andreas Mock]

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?

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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