To address:
As per my understanding, IP address is IP address of management module
of IBM blade center, login/password represent credentials to access
the same.
>> Correct.
However did not get the parameter 'Blade'. How does it play role in
fencing?
>> If I recall correctly the blade= is the identifier used to identify the blade in the AMM. I can't remember if it is a number of a slot or a user defined name. It corresponds to
# fence_bladecenter -h
-n, --plug=<id> Physical plug number on device or
name of virtual machine
If the fencing code:
"port" : {
"getopt" : "n:",
"longopt" : "plug",
"help" : "-n, --plug=<id> Physical plug number on device or\n" +
" name of virtual machine",
"required" : "1",
"shortdesc" : "Physical plug number or name of virtual machine",
"order" : 1 },
To test this try running:
/sbin/fence_bladecenter -a <ip or hostname of bladecenter> -l <login> -p <passwd> -n <blade number of the blade you want to fence> -o status -v
An example cluster.conf looks like:
<clusternode name="node1" votes="1">
<fence>
<method name="1">
<device blade="2" name="chassis_fence"/>
</method>
</fence>
</clusternode>
<clusternode name="node2" votes="1">
<fence>
<method name="1">
<device blade="3" name="chassis_fence"/>
</method>
</fence>
<fencedevices>
<fencedevice agent="fence_bladecenter" ipaddr="XXX.XXX.1.143" login="rchs_fence" name="chassis_fence"
passwd="XXXXXXX"/>
</fencedevices>
-Ben
----- Original Message -----
> Hi all,
>
> >From RHCS documentation, I could see that bladecenter is one of the
> fence devices -
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Cluster_Administration/ap-fence-device-param-CA.html
>
> Table B.9. IBM Blade Center
> Field Description
> Name A name for the IBM BladeCenter device connected to the cluster.
> IP Address The IP address assigned to the device.
> Login The login name used to access the device.
> Password The password used to authenticate the connection to the
> device.
> Password Script (optional) The script that supplies a password for
> access to the fence device. Using this supersedes the Password
> parameter.
> Blade The blade of the device.
> Use SSH (Rhel 5.4 and later) Indicates that system will use SSH to
> access the device.
>
> As per my understanding, IP address is IP address of management module
> of IBM blade center, login/password represent credentials to access
> the same.
>
> However did not get the parameter 'Blade'. How does it play role in
> fencing?
>
> In a situation where there are two blades - Blade-1 and Blade-2 and
> if Blade-1 goes down(hardware node failure), Blade-2 should fence out
> Blade-1, in that situation fenced on Blade-2 should power off(?)
> blade-2 using fence_bladecenter, so how should below sniplet of
> cluster.conf file should look like? -
>
>
> <clusternodes>
> <clusternode name="blade1" nodeid="1" votes="1">
> <fence>
> <method name="1">
> <device blade="?????"
> name="BLADECENTER"/>
> </method>
> </fence>
> </clusternode>
> <clusternode name="blade2" nodeid="2" votes="1">
> <fence>
> <method name="1">
> <device blade="????"
> name="BLADECENTER"/>
> </method>
> </fence>
> </clusternode>
> </clusternodes>
>
> In which situation fence_bladecenter would be used to power on the
> blade?
>
> Your gratefully
>
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