[ClusterLabs] Fencing questions.

Jan Pokorný jpokorny at redhat.com
Tue Oct 20 16:37:00 EDT 2015

On 19/10/15 10:51 -0400, Digimer wrote:
> On 19/10/15 06:53 AM, Arjun Pandey wrote:
>> 2. Fencing test cases.
>>  Based on the internet queries i could find , apart from plugging out
>> the dedicated cable. The only other case suggested is killing corosync
>> process on one of the nodes.
>> Are there any other basic cases that i should look at ?
>> What about bring up interface down manually ? I understand that this is
>> an unlikely scenario but i am just looking for more ways to test this out.

Recurring topic, for instance:
(scroll down under second item)

As a corollary, you should make sure this scenario is indeed unlikely
(e.g., because of NetworkManager activity).

>> 4. Fencing agent to be used (fence_ipmilan vs fence_ilo4)
>> Also for ILO fencing i see fence_ilo4 and fence_ipmilan both available.
>> I had been using fence_ilo4 till now. 
> Which ever works is fine. I believe a lot of the fence_X out-of-band
> agents are actually just links to fence_ipmilan, but I might be wrong.

Correct; for instance, see the description above the following

Similar to fence_ilo + fence_ilo2:

Also note that there can be sophistication on top of plain duplication;
some default parameters can be internally adjusted as per how the
agent is invoked:

Jan (Poki)
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