High availability system allowing conditionally reserved computing resource use and reclamation upon a failover

摘要

In one embodiment, a method determines a first set of virtual machines and a second set of virtual machines. The first set of virtual machines is associated with a first priority level and the second set of virtual machines is associated with a second priority level. A first set of computing resources and a second set of computing resources are associated with hosts. Upon determining a failure of a host, the method performs: generating a power off request for one or more of the second set of virtual machines powered on the second set of computing resources and generating a power on request for one or more virtual machines from the first set of virtual machines that were powered on the failed host, the power on request powering on the one or more virtual machines from the first set of virtual machines on the second set of computing resources.

主权项

1. A method comprising:
determining a first set of virtual machines and a second set of virtual machines, wherein the virtual machines of the first set are associated with a first priority level and the virtual machines of the second set are associated with a second priority level; determining a first set of computing resources and a second set of computing resources associated with a set of hosts, wherein the computing resources of the first set are designated as available for placement of virtual machines and the computing resources of the second set are designated as conditionally available for placement of virtual machines, and wherein the virtual machines of the first set are powered on the first set of computing resources and at least a portion of the second set of virtual machines is powered on the second set of computing resources; and upon determining a failure of a host in the set of hosts, the method performing:
generating, by a computing device, a power off request for one or more of the at least a portion of the second set of virtual machines powered on the second set of computing resources on one or more hosts in the set of hosts excluding the host in which the failure is determined; andgenerating, by the computing device, a power on request for one or more virtual machines from the first set of virtual machines that were powered on the failed host, the power on request powering on the one or more virtual machines from the first set of virtual machines on the at least a portion of the second set of computing resources.