[Linux-cluster] is there a master rgmanager ?

[Jakov Sosic]

On 05/08/2010 04:53 AM, Celso K. Webber wrote:
> Hi, I have a similar question to the master qdiskd daemon: how can I say
> which node has the qdisk master role?
> 
> Today I go to the logs of each node and find out which one has the mos
> recent message "assuming master role" message.
> 
> Thank you.
> 
> ------------------------------------------------------------------------
> *From:* Martin Waite <Martin.Waite at datacash.com>
> *To:* linux clustering <linux-cluster at redhat.com>
> *Sent:* Fri, May 7, 2010 6:38:47 AM
> *Subject:* [Linux-cluster] is there a master rgmanager ?
> 
> Hi,
> 
>  
> 
> Is there a master rgmanager instance that makes decisions for the whole
> cluster, or does each rgmanager arrive at exactly the same decision as
> all the other instances based on the totally-ordered sequence of cluster
> events that update their state machines ?
> 
>  
> 
> If there is a master rgmanager instance, is it possible to identify
> which node it is running on ? 

Just add a "status_file" to your <quorumd> section:

# cat /etc/cluster/cluster.conf | egrep "var.run.cluster"
	<quorumd interval="2" tko="10" votes="2" label="c00-qdisk"
status_file="/var/run/cluster/qdisk" stop_cman="1"/>


# cat /var/run/cluster/qdisk
Time Stamp: Sat May  8 11:17:00 2010
Node ID: 1
Score: 1/1 (Minimum required = 1)
Current state: Master
Initializing Set: { }
Visible Set: { 1 2 3 }
Master Node ID: 1
Quorate Set: { 1 2 3 }



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|    Jakov Sosic    |    ICQ: 28410271    |   PGP: 0x965CAE2D   |
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