1. An apparatus, comprising: a network node including a failure detection module to detect a failure in a failed node of a plurality of nodes included in a cluster; and a fencing module to fence a portion of the plurality of nodes, including the failed node and at least one other node, wherein membership in the portion of the cluster is determined according to an aggregated value of weighted values respectively assigned to at least one of resources or services associated with the failed node and the at least one other node within the portion of the plurality of nodes included in the cluster.