Abstract: Example implementations relate to virtualized network function (VNF) placements. For example, VNF placements may include generating an initial mapping of a plurality of VNFs among a plurality of nodes of a network infrastructure, wherein the initial VNF mapping distributes each of a plurality of service chains associated with the plurality of VNFs to different top-of-rack switches. VNF placement may include generating an alternate VNF mapping of the plurality of VNFs among a portion of the plurality of nodes, wherein the alternate VNF mapping corresponds to a metric associated with node resource utilization and a particular amount of servers utilized by distributing the plurality of service chains according to the alternate VNF mapping. VNF placement may include placing the plurality of VNFs according to a selected placement from the initial VNF mapping and the alternate VNF mapping.

Abstract: Example implementations relate to virtualized network function (VNF) placements. For example, VNF placements may include generating an initial mapping of a plurality of VNFs among a plurality of nodes of a network infrastructure, wherein the initial VNF mapping distributes each of a plurality of service chains associated with the plurality of VNFs to different top-of-rack switches. VNF placement may include generating an alternate VNF mapping of the plurality of VNFs among a portion of the plurality of nodes, wherein the alternate VNF mapping corresponds to a metric associated with node resource utilization and a particular amount of servers utilized by distributing the plurality of service chains according to the alternate VNF mapping. VNF placement may include placing the plurality of VNFs according to a selected placement from the initial VNF mapping and the alternate VNF mapping.

Abstract: An example method can include receiving network data related to a distributed system. A statistical model of the distributed system based on the network data can be employed to determine a statistical deviation of a given flow of information through a portion of the distributed system. A number of statistically deviated flows connected to the given flow can be determined based on a context of the distributed system. A determination can be made if the given flow is an anomaly based on the number of statistically deviated flows connected to the given flow.