[Pacemaker] understanding scores

[Andrew Beekhof]

On Mon, Nov 15, 2010 at 3:18 PM, Pavlos Parissis
<pavlos.parissis at gmail.com> wrote:
> On 15 November 2010 08:07, Andrew Beekhof <andrew at beekhof.net> wrote:
>> On Fri, Nov 12, 2010 at 7:54 PM, Pavlos Parissis
>> <pavlos.parissis at gmail.com> wrote:
>>> Hi,
>>>
>>> I am trying to understand how the scores are calculated based on the
>>> output of ptest -sL and I have few questions
>>> Below is my scores with a  line number column and the bottom you will
>>> find my configuration
>>>
>>> So, let's start
>>>
>>> 1 group_color: pbx_service_01 allocation score on node-01: 200
>>>  2 group_color: pbx_service_01 allocation score on node-03: 10
>>>  3 group_color: ip_01 allocation score on node-01: 1200
>>>  4 group_color: ip_01 allocation score on node-03: 10
>>> so for so good, ip_01 has 1000 due to resource-stickiness="1000" plus
>>> 200 from the group location constraint
>>>
>>>  5 group_color: fs_01 allocation score on node-01: 1000
>>>  6 group_color: fs_01 allocation score on node-03: 0
>>>  7 group_color: pbx_01 allocation score on node-01: 1000
>>>  8 group_color: pbx_01 allocation score on node-03: 0
>>>  9 group_color: sshd_01 allocation score on node-01: 1000
>>>  10 group_color: sshd_01 allocation score on node-03: 0
>>>  11 group_color: mailAlert-01 allocation score on node-01: 1000
>>>  12 group_color: mailAlert-01 allocation score on node-03: 0
>>> hold on now, why all the above resources have 1000 on node-01 and not
>>> 1200 as fs_01
>>
>> its only applied to ip_01, the rest inherit it from there
>>
>>>
>>>  13 native_color: ip_01 allocation score on node-01: 5200
>>> 5 resources x 1000 from resource-stickiness="1000" plus, right? what
>>> is the difference between in native and group?
>>
>> Many things, can you be specific?
> In principles what are the difference? if my question sounds stupid
> then it is because I don't understand the terminology.

well, groups are an ordered collection of natives.

>
>>
>>>
>>>  14 native_color: ip_01 allocation score on node-03: 10
>>>  15 clone_color: ms-drbd_01 allocation score on node-01: 4100
>>> why 4100?
>>
>> probably the promotion score
> I have "order pbx_service_01-after-drbd_01 inf: ms-drbd_01:promote
> pbx_service_01:start"
> does promotion score you mention come out the above contstraint?

only from colocation constraints

>
> I think my issue here is how I look at the numbers, I assume that
> every time I see score for a resource, that score also includes any
> scores mentioned before. Is my assumption correct?

often, it depends on what colocation constraints you have set up