[Pacemaker] Howto write a STONITH agent

[Dejan Muhamedagic]

Hi,

On Thu, Jan 13, 2011 at 09:09:38PM +0100, Christoph Herrmann wrote:
> Hi,
> 
> I have some brand new HP Blades with ILO Boards (iLO 2 Standard Blade Edition 1.81 ...)
> But I'm not able to connect with them via the external/riloe agent.
> When i try:
> 
> stonith -t external/riloe -p "hostlist=node1 ilo_hostname=ilo1  ilo_user=ilouser ilo_password=ilopass ilo_can_reset=1 ilo_protocol=2.0 ilo_powerdown_method=power" -S

Try this:

stonith -t external/riloe hostlist=node1 ilo_hostname=ilo1  ilo_user=ilouser ilo_password=ilopass ilo_can_reset=1 ilo_protocol=2.0 ilo_powerdown_method=power -S

Thanks,

Dejan

> 
> I get the following answer:
> 
> external/riloe[14317]: ERROR: unknown power method %s, setting to "power"
> external/riloe[14317]: ERROR: [Errno -2] Name or service not known, while talking to ilo_hostname=ilo1
> 
> ** (process:14315): CRITICAL **: external_run_cmd: Calling '/usr/lib64/stonith/plugins/external/riloe status' returned 1
> 
> ** (process:14315): CRITICAL **: external_status: 'riloe status' failed with rc 1
> stonith: external/riloe device not accessible.
> 
> 
> But I can access ilo1 with http, https and ssh. The easiest way to reset a node is to run:
> 
> ssh -i ilo-sshkey ilouser at ilo1 reset system1 
> 
> I thouhgt it is easier to write a new ssh-ilo agent (I'm almost done :-) than debugging the existing one. But I'm looking for a short howto. I've read some STONITH agents, but they are not completely self-explaining and I have some questions. Is there a short howto write a stonith agent manual which google and I were not able to find?
> Or should I post all questions to the list?
> here we go:
> 
> 1. (and most important): What does the status check do, if you have an agent which runs as cloned resource (my ssh-ilo agent should run as a cloned resource). Does it check all nodes? Is it possible to check the status of a single node?
> 2. What are the expected return codes?
> 
> more to follow ;-)
> 
> 
> 
> 
> regards
> 
> 
>    Christoph &:-)
> -- 
> Vorstand/Board of Management:
> Dr. Bernd Finkbeiner, Dr. Roland Niemeier, 
> Dr. Arno Steitz, Dr. Ingrid Zech
> Vorsitzender des Aufsichtsrats/
> Chairman of the Supervisory Board:
> Michel Lepert
> Sitz/Registered Office: Tuebingen
> Registergericht/Registration Court: Stuttgart
> Registernummer/Commercial Register No.: HRB 382196 
> 
> 
> 
> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker