[Pacemaker] cli configuration and resource sets

Cristian Mammoli - Apra Sistemi c.mammoli at apra.it
Fri Feb 19 12:06:38 UTC 2010


Dejan Muhamedagic wrote:

> Sorry, didn't read careful enough, was distracted by the actions
> in the description. Yes, you need both the order and the
> collocation.

>> Basically what I want to achieve is the same behaviour of an
>> unordered group of heartbeat 2.1.4.
> 
> Why don't you keep the unordered group?

Uhm, in heartbeat 2.1.4 i could specify "collocated=true/false" and 
"ordered="true/false" for the groups. As I said I nedd an unordered, 
collocated group.

In pacemaker I didn't find a way to specify this options for group 
(through the gui or the cli). According to the docs:

One of the most common elements of a cluster is a set of resources that 
need to be located together, start sequentially and stop in the reverse 
order. To simplify this configuration we support the concept of groups.

So I think all groups are collocated and ordered by design, aren't they?

> I'm a bit confused. You already used an unordered group and
> resource sets. Shouldn't they do?

In 2.1.4 I used an unordered group and I referenced it once in order 
(after filesystem) and colocation (with filesystem).
With pacemaker, since I can't find a way to create a group unordered, I 
have to use many primitives and create an order rule and a colo rule for 
everyone of them.
Indeed I'm trying to use resource sets to replicate the example in 
chapter 6.6.

-- 
Cristian Mammoli
APRA SISTEMI srl




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