Defining Disjoint Node Groups for Virtual Machines with Pre-Existing Placement Policies

摘要

Disjoint node groups are generated for a node cluster to guarantee hardware redundancy for each service group to be configured on the node cluster. Each service group includes service units, and each service unit is a unit of redundancy for services provided and protected by the service group. Hardware dependency is identified between virtual machines in the node cluster and hardware elements to host the virtual machines. A first node group set (NG set) is formed using a first criterion to select the virtual machines into different node groups based on the hardware dependency, such that there is no common hardware element between any two node groups in the first NG set. The first NG set is mapped to a first set of service groups. Different node groups of the first NG set are mapped to different service units in each service group of the first set of service groups.

主权项

1. A method implemented by a computer system adapted to generate disjoint node groups for a node cluster to thereby guarantee hardware redundancy for each of a plurality of service groups to be configured on the node cluster, wherein each service group includes a plurality of service units, and wherein each service unit is a unit of redundancy for services provided and protected by the service group, the method comprising the steps of:
identifying a hardware dependency between virtual machines in the node cluster and hardware elements to host the virtual machines; forming a first node group set (NG set) of node groups using a first selection criterion to select the virtual machines into different node groups based on the hardware dependency, such that there is no common hardware element between any two of the node groups in the first NG set; mapping the first NG set to a first set of the service groups; and mapping different node groups of the first NG set to different service units in each service group of the first set of the service groups.