The Simple Scheduler (nova.scheduler.simple.SimpleScheduler)
implements a naive scheduler that tries to find the least loaded host
(i.e., implements a "spread-first" algorithm). It can schedule requests
for both nova-compute and nova-volume.
The Simple Scheduler supports the following configuration options:
| Configuration option=Default value | (Type) Description |
max_cores=16
|
(IntOpt) The maximum number of instance cores to allow per host. Used when servicing compute requests to determine whether a host is a valid candidate for launching a VM instance. |
max_gigabytes=10000
|
(IntOpt) Maximum number of volume gigabytes to allow per host. Used when servicing volume requests to determine whether a host is a valid candidate for creating a new volume. |
skip_isolated_core_check=true
|
(BoolOpt) If true, allow overcommitting of vcpus on isolated hosts. |
