[Pacemaker] Get group behaviour with Master slave or clones envolved

[Néstor C.]

2014-02-18 0:47 GMT+01:00 Andrew Beekhof <andrew at beekhof.net>:

>
> On 17 Feb 2014, at 10:34 pm, Néstor C. <xalabin at gmail.com> wrote:
>
> >
> >
> >
> > 2014-02-17 1:22 GMT+01:00 Andrew Beekhof <andrew at beekhof.net>:
> >
> > On 21 Jan 2014, at 10:50 pm, Néstor C. <xalabin at gmail.com> wrote:
> >
> > >> Hello.
> > >>
> > >> When you need that some primitives switch in block you can use a
> group.
> >
> > >Groups are just a syntactic shortcut for ordering and colocation
> constraints.
> >
> > There is a manner of view this "hyde" contraints?
> >
> >
> > >>
> > >> There is a manner to get this when you have a clone or a master/slave
> involved?
> > >>
> > >> For example:
> > >>
> > >> Imagine a drbd disk (DR), a filesystem over ti (FS) and a service
> over all (SRV).
> > >> The first one is a ms resource, and the other, primitives.
> > >>
> > >> The colocation rules are:
> > >> colocation fs_on_dr inf: FS DR:Master
> > >> colocation srv_on_fs inf: SRV FS
> > >>
> > >> The order rules are:
> > >> order fs_after_dr inf: DR:promote FS:start
> > >> order srv_after_fs inf: FS:start SRV:start
> > >>
> > >> How can switch the entire cluster to other node if SRV fails? (like
> if all was in a group)
> >
> > >In what way does it not do so already with the above constraints?
> >
> > I want some kind of  "circular constraint"
>
> We actively detect and prevent colocation and ordering loops.
> What version of pacemaker is this?
>
>
Pacemaker 1.1.9 on Suse sles 11 sp3


> > like if srv fails move the entire stack to other node.
> > If i add other constraint like:
> > colocation dr on srv inf: DR:Master SRV
> >
> > It doesn't start.
> >
> > Thanks!
> >
> >
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