[Linux-cluster] probe a special port and fence according to the result

[Peter]

Hi Lon!

"nc -z -w3 <IP> <Port>" hit the spot!

Thanks!


Am 29.02.2008 um 15:20 schrieb Lon Hohberger:

> On Fri, Feb 29, 2008 at 03:05:23PM +0100, Peter wrote:
>> Hi!
>>
>> I am planning to test a service for availability and if the service  
>> is not
>> available anymore, fence the node and start the service on another  
>> node.
>> Therefore, i need a clue how to probe a port with system tools.
>> Sure, with telnet there is a possibility to check. But i have no  
>> idea to
>> avoid the interactivity. So it is too difficult for me to implement  
>> and
>> usually not allowed in this environment.
>>
>> On Solaris, there is the "ping -p" command to test the availability  
>> of a
>> application waiting on a port. But for Redhat, i have no clue.
>>
>> Could you please help?
>
> Net Cat? (man nc ) ?
>
> -- 
> Lon Hohberger - Software Engineer - Red Hat, Inc.
>
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