2.3. Compute

Red Hat OpenStack Platform 8 brings several notable new features in the Compute Service:

The nova set-password server command, which changes the admin password for a server, is now available.
The libvirt driver has been enhanced to enable virtio-net multiqueue for instances. With this feature on, workload is scaled across vCPUs, thereby increasing network performance.
Disk QoS (Quality of Service) when using Ceph RBD (RADOS block device) storage. Among other things, sequential read or write limitation, and total allowed IOPS or bandwidth for a guest can be configured.
The Mark host down API for external high-availability solutions. This API allows external tools to notify the Compute service of compute node failure, which improves instance resiliency.