[Pacemaker] constraint colocation or resource group

[Luc Paulin]

Thanx for quick reply,
That make sense to use the colocation. So I guess that I should define a
"master" resource and tell each other resource that they should colocated
on the same node at the "master" resource.

pcs constraint colocation add resourceA master_resource INFINITY
pcs constraint colocation add resourceB master_resource INFINITY
pcs constraint colocation add resourceC master_resource INFINITY
pcs constraint colocation add resourceD master_resource INFINITY
pcs constraint colocation add resourceE master_resource INFINITY


  -Luc



--
                         !!!!!
                       ( o o )
 --------------oOO----(_)----OOo--------------
   Luc Paulin
   email: paulinster(at)gmail.com
   Skype: paulinster



2014/1/2 Kristoffer Grönlund <kgronlund at suse.com>

> On Thu, 2 Jan 2014 09:49:40 -0500
> Luc Paulin <paulinster at gmail.com> wrote:
>
> > I am trying figure out in which case I should be using a constraint
> > colocation or the resource group. At the end it look that both will
> > result in the same result, the resource will be running on the same
> > host.
> >
> > As an example I am currently configuring a two node firewall.
> > Therefore the only resource that will need to be running are VIP,
> > BGP/Routing service, Firewall, IPSec/VPN.
> >
> > So which of the 2 commands is preferred to be use to have all service
> > running on the same server.
>
> Hi,
>
> I think the appropriate constraint in this case is a colocation. A
> group implies other constraints on the resources as well, for example
> if one of the resources fails, other resources appearing after it in
> the group will also be stopped. A colocation constraints only says that
> the resources should be placed on a particular node.
>
> However, if, for example, the Firewall depends on the VIP being started
> before it starts, you will need either an order constraint as well, or
> to use a group.
>
> >
> > Thanx!
> >
> >
> > --
> >                          !!!!!
> >                        ( o o )
> >  --------------oOO----(_)----OOo--------------
> >    Luc Paulin
> >    email: paulinster(at)gmail.com
> >    Skype: paulinster
>
>
>
> --
> // Kristoffer Grönlund
> // kgronlund at suse.com
>
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