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

[Brian Kroth]

Peter <p.elmers at gmx.de> 2008-02-29 15:05:
> 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?

nmap -p will test that the port is responding, but not that the
application on the other end is actually doing what it's supposed to be.

Brian
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 2192 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/linux-cluster/attachments/20080229/627ab91f/attachment.bin>