[Linux-cluster] Things that i don't understand about cluster suite

carlopmart carlopmart at gmail.com
Thu Sep 21 11:12:53 UTC 2006

Lon Hohberger wrote:
> On Wed, 2006-09-20 at 10:23 +0200, carlopmart wrote:
>> Hi all,
>>   Sorry for this toppic, but i have serious doubts about using cluster 
>> suite under some deployments. My questions:
>>   a) How can I configure status check on a service script? for exmaple: 
>> I have two nodes with CS U4 with postfix service running on two nodes 
>> and using DLM as a lock manager. If I stop postfix from the script and I 
>> wait status check, nothing happens and rgmanager returns an ok for the 
>> service, but this service is stopped !!!.
> The status check in the postfix script must return nonzero if the
> service is stopped.

Lon, I use original's postfix script and returns this if postfix is up: 
"master (pid 957) is running..." when postfix isn't up, script returns: 
"master is stopped". Do I need to change this message to "0" for status 
check works ok??
>>   b) is it posible to startup only one node on a two-node cluster? i 
>> have tested this feature, but this node doesn't startup ( i am using iLO 
>> as a fencing method, but I have tested gnbd too and the result is the same).
> Yes, but the other node must be fenced first.

Then, I can't startup only one node, when both are stopped, right??

>>   c) why relocate service doesn't works?? I have attached my config. For 
>> example, if I reboot one node, all services go to the second. This is 
>> ok, but when this primary node is up, services continue getting up in 
>> the previous node and they don't migrate towards the other node.
> Kill the 'exclusive' attribute.  It doesn't do what you think it does
> (and is probably the source of your problem).
Thanks, now works ok.

> -- Lon
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CL Martinez
carlopmart {at} gmail {d0t} com

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