The OpenStack community released Stein, the 19th version of open source cloud infrastructure software, which powers over 75 public cloud data centers and thousands of private clouds at a scale of more than 10 million compute cores.
OpenStack is the one infrastructure platform uniquely suited to deployments of diverse architectures—bare metal, virtual machines (VMs), graphics processing units (GPUs) and containers.
Kubernetes is a key container orchestration framework running on OpenStack, with 61 percent of OpenStack deployments indicating they integrate the two platforms, according to the 2018 OpenStack User Survey.
In Stein, OpenStack continues to deliver the core infrastructure management features delivering the bare metal and network functionality that containers need. OpenStack Magnum, a Certified Kubernetes installer, improved Kubernetes cluster launch time significantly—down from 10-12 minutes per node to five minutes regardless of the number of nodes.
With the OpenStack cloud provider, users can now launch a fully integrated Kubernetes cluster with support from the Manila, Cinder and Keystone services to take full advantage of the OpenStack cloud it’s created on.
Neutron, OpenStack’s networking service, has faster bulk port creation, targeting container use cases, where ports are created in groups, while Ironic, the bare metal provisioning service, continues to improve deployment templates for standalone users to request allocations of bare metal nodes and submit configuration data as opposed to pre-formed configuration drives.
Within Neutron, Network Segment Range Management enables cloud administrators to manage segment type ranges dynamically via a new API extension, as opposed to the previous approach of editing configuration files. This feature benefits StarlingX and edge use cases, where ease of management is critical.
For network-heavy applications, it is crucial to have a minimum amount of network bandwidth available. Work began during the Rocky cycle to provide scheduling based on minimum bandwidth requirements, and the feature was delivered in Stein. As part of the enhancements, Neutron treats bandwidth as a resource and works with the OpenStack Nova compute service to schedule the instance to a host where the requested amount is available.
API improvements boost flexibility, adding support for aliases to Quality of Service (QoS) policy rules that enable callers to execute the requests to delete, show and update QoS rules more efficiently.
Blazar, the resource reservation service, introduced a new Resource Allocation API allowing operators to query the reserved state of their cloud resources.
Placement is a new project introduced in the Stein release. Extracted from the Nova project, Placement offers the ability to target a candidate resource provider, easing the task of specifying a host for workload migration. This increases API performance by 50% for common scheduling operations. The internal Placement service in Nova will be removed by the Train release. At that point Nova installations should make use of the separate Placement service.
Sahara, a project for provisioning Hadoop clusters, has been refactored into a core+plugins architecture, making it easier to take advantage of this functionality.
“OpenStack has become a powerful platform for managing Kubernetes clusters in private and multi-cloud deployments,” said Jonathan Bryce, executive director of the OpenStack Foundation. “With Stein, operators gain new capabilities for bare metal management and networking, running high-performance workloads with GPUs, operating NFV deployments, and for a diversity of enterprise application use cases. Stein’s arrival is a tribute to the community’s hard work in delivering open infrastructure services that solve real, pressing problems for operators and users.”
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