[Linux-cluster] ordering scores and kinds

[Ferenc Wagner]

Andrew Beekhof <andrew at beekhof.net> writes:

> On 22 Sep 2014, at 6:24 pm, Ferenc Wagner <wferi at niif.hu> wrote:
>
>> http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/s-resource-ordering.html
>> says that optional ordering is achieved by setting the "kind" attribute
>> to "Optional".  However, the next section
>> http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/_advisory_ordering.html
>> says that advisory ordering is achieved by setting the "score" attribute
>> to 0.  Is there any difference between an optional and an advisory
>> ordering constraint?
>
> No.  kind=optional is the newer syntax that was intended to be more
> human friendly
>
>> How do nonzero score values influence cluster behaviour, if at all?
>
> score > 0 is equivalent to kind=mandatory
>
>> Or is the kind attribute intended to replace all score settings on
>> ordering constraints?
>
> yes

Great, thanks!  Please consider adding this info to the documentation
(even knowing the history can be comforting, as the old syntax will
never vanish from the internet).  And please also specify what is the
default kind if both of the kind and score attributes are missing.
-- 
Thanks,
Feri.