Hi, Ken Gaillot <kgail...@redhat.com> writes:
> Pacemaker's upstream master branch has a new feature that will be part > of the eventual 1.1.14 release. > > Fencing topology is used when a node requires multiple fencing devices > (in combination or as fallbacks). Currently, topologies must be > specified by node name (or a regular expression matching node names). > > The new feature allows topologies to specified by node attribute. Sounds like a really useful feature. :) I have implemented initial support for this syntax in crmsh, so this will work fine in the next version of crmsh. Examples of crmsh syntax below: > Previously, if node1 was in rack #1, you'd have to register a fencing > topology by its name, which at the XML level would look like: > > <fencing-topology> > <fencing-level id="node1-1" index="1" target="node1" > devices="apc01,apc02"/> > </fencing-topology> > crm cfg fencing-topology node1: apc01,apc02 > > With the new feature, you could instead register a topology for all > hosts that have a node attribute "rack" whose value is "1": > > <fencing-topology> > <fencing-level id="rack-1-1" index="1" target="rack=1" > devices="apc01,apc02"/> > </fencing-topology> > crm cfg fencing-topology rack=1: apc01,apc02 > > You would assign that attribute to all nodes in that rack, e.g.: > > crm_attribute --type nodes --node node1 --name rack --update 1 > crm node attr node1 set rack 1 > > The syntax accepts either '=' or ':' as the separator for the name/value > pair, so target="rack:1" would work in the XML as well. crm cfg fencing-topology rack:1: apc01,apc02 (admittedly perhaps not as clean as using '=', but it works) Cheers, Kristoffer > -- > Ken Gaillot <kgail...@redhat.com> > > _______________________________________________ > Users mailing list: Users@clusterlabs.org > http://clusterlabs.org/mailman/listinfo/users > > Project Home: http://www.clusterlabs.org > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf > Bugs: http://bugs.clusterlabs.org > -- // Kristoffer Grönlund // kgronl...@suse.com _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org