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2.15. Technology Previews

This section outlines features that are in technology preview in Red Hat OpenStack Platform 11.


For more information on the support scope for features marked as technology previews, see Technology Preview Features Support Scope.

2.15.1. New Technology Previews

The following new features are provided as technology previews:
Benchmarking Service - Introduction of a new plug-in type: Hooks
Allows test scenarios to run as iterations, and provides timestamps (and other information) about executed actions in the rally report.
Benchmarking Service - New Scenarios
Benchmarking scenarios have been added for nova, cinder, magnum, ceilometer, manila, and neutron.
Benchmarking Service - Refactor of the Verification Component
Rally Verify is used to launch Tempest. It was refactored to cover a new model: verifier type, verifier, and verification results.
Block Storage - Highly Available Active-Active Volume Service
In previous releases, the openstack-cinder-volume service could only run in Active-Passive HA mode. Active-Active configuration is now available as a technology preview with this release. This configuration aims to provide a higher operational SLA and throughput.


The active-active volume functionality is available only if you already have a Block Storage driver that supports active-active configuration. This driver is not provided as a part of this release.
Block Storage - RBD Cinder Volume Replication
The Ceph volume driver now includes RBD replication, which provides replication capabilities at the cluster level. This feature allows you to set a secondary Ceph cluster as a replication device; replicated volumes are then mirrored to this device. During failover, all replicated volumes are set to 'primary', and all new requests for those volumes will be redirected to the replication device.
To enable this feature, use the parameter replication_device to specify a cluster that the Ceph back end should mirror to. This feature requires both primary and secondary Ceph clusters to have RBD mirroring set up between them. For more information, see
At present, RBD replication does not feature a failback mechanism. In addition, the freeze option does not work as described, and replicated volumes are not automatically attached/detached to the same instance during failover.
CephFS Integration - CephFS Native Driver Enhancements
The CephFS driver is still available as a Technology Preview, and features the following enhancements:
  • Read-only shares
  • Access rules sync
  • Backwards compatibility for earlier versions of CephFSVolumeClient
Link Aggregation for Bare Metal Nodes
This release introduces link aggregation for bare metal nodes. Link aggregation allows you to configure bonding on your bare metal node NICs to support failover and load balancing. This feature requires specific hardware switch vendor support that can be configured from a dedicated neutron plug-in. Verify that your hardware vendor switch supports the correct neutron plug-in.
Alternatively, you can manually preconfigure switches to have bonds set up for the bare metal nodes. To enable nodes to boot off one of the bond interfaces, the switches need to support both LACP and LACP fallback (bond links fall back to individual links if a bond is not formed). Otherwise, the nodes will also need a separate provisioning and cleaning network.

2.15.2. Previously Released Technology Previews

The following features remain as technology previews:
Benchmarking Service

Rally is a benchmarking tool that automates and unifies multi-node OpenStack deployment, cloud verification, benchmarking and profiling. It can be used as a basic tool for an OpenStack CI/CD system that would continuously improve its SLA, performance and stability. It consists of the following core components:
  1. Server Providers - provide a unified interface for interaction with different virtualization technologies (LXS, Virsh etc.) and cloud suppliers. It does so via ssh access and in one L3 network
  2. Deploy Engines - deploy an OpenStack distribution before any benchmarking procedures take place, using servers retrieved from Server Providers
  3. Verification - runs specific set of tests against the deployed cloud to check that it works correctly, collects results & presents them in human readable form
  4. Benchmark Engine - allows to write parameterized benchmark scenarios & run them against the cloud.
OpenStack Compute includes the concept of Cells, provided by the nova-cells package, for dividing computing resources. In this release, Cells v1 has been replaced by Cells v2. Red Hat OpenStack Platform deploys a "cell of one" as a default configuration, but does not support multi-cell deployments at this time.
CephFS Native Driver for Manila
The CephFS native driver allows the Shared File System service to export shared CephFS file systems to guests through the Ceph network protocol. Instances must have a Ceph client installed to mount the file system. The CephFS file system is included in Red Hat Ceph Storage 2.0 as a technology preview as well.
Containerized Compute Nodes

The Red Hat OpenStack Platform director has the ability to integrate services from OpenStack's containerization project (kolla) into the Overcloud's Compute nodes. This includes creating Compute nodes that use Red Hat Enterprise Linux Atomic Host as a base operating system and individual containers to run different OpenStack services.
DNS-as-a-Service (DNSaaS)
Red Hat OpenStack Platform 11 includes a Technology Preview of DNS-as-a-Service (DNSaaS), also known as Designate. DNSaaS includes a REST API for domain and record management, is multi-tenanted, and integrates with OpenStack Identity Service (keystone) for authentication. DNSaaS includes a framework for integration with Compute (nova) and OpenStack Networking (neutron) notifications, allowing auto-generated DNS records. DNSaaS includes integration with the Bind9 back end.
Firewall-as-a-Service (FWaaS)
The Firewall-as-a-Service plug-in adds perimeter firewall management to OpenStack Networking (neutron). FWaaS uses iptables to apply firewall policy to all virtual routers within a project, and supports one firewall policy and logical firewall instance per project. FWaaS operates at the perimeter by filtering traffic at the OpenStack Networking (neutron) router. This distinguishes it from security groups, which operate at the instance level.
Google Cloud Storage Backup Driver (Block Storage)
The Block Storage service can now be configured to use Google Cloud Storage for storing volume backups. This feature presents an alternative to the costly maintenance of a secondary cloud simply for disaster recovery.
Object Storage Service - At-Rest Encryption
Objects can now be stored in encrypted form (using AES in CTR mode with 256-bit keys). This provides options for protecting objects and maintaining security compliance in Object Storage clusters.
Object Storage Service - Erasure Coding (EC)
The Object Storage service includes an EC storage policy type for devices with massive amounts of data that are infrequently accessed. The EC storage policy uses its own ring and configurable set of parameters designed to maintain data availability while reducing cost and storage requirements (by requiring about half of the capacity of triple-replication). Because EC requires more CPU and network resources, implementing EC as a policy allows you to isolate all the storage devices associated with your cluster's EC capability.
OpenDaylight Integration
Red Hat OpenStack Platform 11 includes a technology preview of integration with the OpenDaylight SDN controller. OpenDaylight is a flexible, modular, and open SDN platform that supports many different applications. The OpenDaylight distribution included with Red Hat OpenStack Platform 11 is limited to the modules required to support OpenStack deployments using NetVirt, and is based on the upstream Boron version.
Open vSwitch Firewall Driver
The OVS firewall driver is available as a Technology Preview. The conntrack-based firewall driver can be used to implement Security Groups. With conntrack, Compute instances are connected directly to the integration bridge for a more simplified architecture and improved performance.
Real Time KVM Integration

Integration of real time KVM with the Compute service further enhances the vCPU scheduling guarantees that CPU pinning provides by reducing the impact of CPU latency resulting from causes such as kernel tasks running on host CPUs. This functionality is crucial to workloads such as network functions virtualization (NFV), where reducing CPU latency is highly important.
Red Hat SSO
This release includes a version of the keycloak-httpd-client-install package. This package provides a command-line tool that helps configure the Apache mod_auth_mellon SAML Service Provider as a client of the Keycloak SAML IdP.
VPN-as-a-Service (VPNaaS)
VPN-as-a-Service allows you to create and manage VPN connections in OpenStack.


VPNaaS is deprecated in Red Hat OpenStack Platform 11 and is planned to be removed in Red Hat OpenStack Platform 12.