On 17 Feb 2014, at 10:34 pm, Néstor C. <xala...@gmail.com> wrote: > > > > 2014-02-17 1:22 GMT+01:00 Andrew Beekhof <and...@beekhof.net>: > > On 21 Jan 2014, at 10:50 pm, Néstor C. <xala...@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? > 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! > > > _______________________________________________ > Pacemaker mailing list: Pacemaker@oss.clusterlabs.org > http://oss.clusterlabs.org/mailman/listinfo/pacemaker > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org
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