[Pacemaker] how to configure IPMI resource

[Bernd Schubert]

Hello lepace,

On Wednesday 11 November 2009, lepace wrote:
> Hi,everyone
> I am a newbie,and I am confused when I want to configure ipmi resource
>  using pacemaker commandline. 1.The difference between
>  stonith:external/ipmi and stonith:ipmilan.which rule should  I base on to
>  choose between them
> 
> 
> 2.In external/ipmi, I want to know the relation between hostname param and
>  ipmi IPaddr param,  in the same primitive, the hostname must be the
>  computer's hostname where the IPMI/BMC hosted ?can hostname=
>  host1,host2,host3 or more? I have 8 nodes HA cluster, can one IPMI manage
>  other 7 machine?
> 

be careful with the default external/ipmi script, it uses the reset method and 
according to IPMI specs, a successful return status may come back, although 
the action failed. In real life I have also seen several system not properly 
reset by this, even with successful return status. So I have rewritten the 
script to use power-off, power-status, power-on and since this checks the real 
power status it is also reliable.
Unfortunately, I presently don't have a test system to also add back the reset 
method as an option in order to update the official script.

Here is an example with the additional option, the default script will just 
ignoret these:

# very long on_time due to shared onboard NIC / IPMI
primitive st-ipmi-1 stonith:external/ipmi       	\
params hostname=server1 ipaddr=ipmi-ip_of_server_1        \
userid=root passwd=password interface=lanplus     	\
min_off_time=60 off_time=60 on_time=120         	\
op monitor interval=600 timeout=240


It will reset "server1" using the IPMI-IP "ipmi-ip_of_server_1".

-- 
Bernd Schubert
DataDirect Networks