OpenStack Rally

OpenStack Rally
Name	OpenStack Rally
Developer	OpenStack Foundation
Initial release	2013
Programming language	Python (programming language)
Repository	GitHub
License	Apache License

OpenStack Rally OpenStack Rally is a benchmarking tool for performance testing and verification of cloud infrastructures in OpenStack environments. It is used by operators, vendors, and researchers to validate performance, scalability, and reliability across releases such as Icehouse (OpenStack release), Newton (OpenStack release), and Ocata (OpenStack release). Rally provides repeatable workload generation, lifecycle management, and reporting for compute, networking, and storage services including Nova (OpenStack), Neutron (OpenStack), and Cinder (OpenStack).

History

Rally originated as a community-driven project within the OpenStack Foundation to address repeatable performance testing needs encountered in deployments like Rackspace, HP, and Red Hat. Early contributors included engineers from Mirantis, IBM, Canonical (company), and Intel Corporation, collaborating alongside events such as OpenStack Summit and LinuxCon. Rally development tracked milestones alongside Kilo (OpenStack release), incorporating lessons from projects like Tempest (software testing), Jenkins, and Ceph performance studies. Over time Rally interworked with repositories on GitHub and governance discussions in OpenInfra Foundation working groups and OpenStack User Committee meetings.

Architecture and Components

Rally's architecture is modular and built in Python (programming language), integrating with tools such as SQLAlchemy, JSON Schema, and HTTP/REST ecosystems. Core components include a task engine, a deployment engine, an API, and a results database often backed by MySQL, PostgreSQL, or InfluxDB. The plugin system enables drivers for compute backends like KVM, Xen (virtual machine monitor), and QEMU, while adapters support Keystone (OpenStack), Glance (OpenStack), and Swift (OpenStack Object Storage). For orchestration, Rally interfaces with Heat (OpenStack) stacks and coordinates with CI systems such as Zuul (software) and Gerrit for automated testing. Storage and networking components integrate with projects including Ceph, LVM, Open vSwitch, and OVN.

Benchmarking Workloads and Scenarios

Rally provides scenario templates that model workloads from industry and research, derived from case studies at NASA, CERN, Yahoo!, Netflix, and Facebook. Built-in scenarios exercise APIs for Nova (OpenStack), Neutron (OpenStack), Cinder (OpenStack), and Glance (OpenStack) with operations like instance boot, snapshot, image upload, attach/detach volume, and network create/delete. Rally supports workload types such as CPU-bound VM boot storms, I/O-bound block storage tests influenced by TPC Benchmarks, and latency-sensitive networking trials akin to studies from Google and Microsoft Azure. Users can author tasks in JSON or YAML and extend scenarios using plugins inspired by patterns from Locust (software), Gatling (software), and JMeter.

Deployment and Configuration

Deployment workflows for Rally are documented for environments managed by tools like Ansible (software), Puppet, Chef (software), and MAAS (software). Integrations exist with CI/CD pipelines using Jenkins, Zuul (software), and GitLab CI/CD. Configuration touches identity and credentials managed via Keystone (OpenStack), endpoint discovery consistent with Horizon (OpenStack), and resource pools provisioned through Ironic for bare-metal or Heat (OpenStack) for orchestrated stacks. Operators often pair Rally with monitoring stacks such as Prometheus, Grafana, and Collectd to capture environmental telemetry during runs.

Metrics, Reporting, and Analysis

Rally collects metrics at multiple layers: API response times, task throughput, VM boot latency, block I/O IOPS, and network packet rates. Stored metrics are analyzed with tools like InfluxDB, Graphite, Prometheus, and visualized in Grafana dashboards. Statistical analysis is performed using libraries such as NumPy, Pandas, and plotting via Matplotlib or Plotly. For trace-level inspection, Rally outputs can be correlated with distributed tracing systems like Jaeger and Zipkin while log aggregation uses ELK Stack components: Elasticsearch, Logstash, and Kibana.

Integration with OpenStack and Ecosystem Tools

Rally integrates natively with Nova (OpenStack), Neutron (OpenStack), Cinder (OpenStack), Glance (OpenStack), Keystone (OpenStack), Heat (OpenStack), and Ironic while interoperating with ecosystem projects such as Ceph, Open vSwitch, OVN, and OVSDB. It fits into CI ecosystems with Zuul (software), Gerrit, Jenkins, and GitHub. For storage benchmarking, Rally works alongside FIO and IOzone, and for networking it complements tools like iperf, netperf, and pktgen. Security and compliance workflows tie into SELinux, AppArmor, and OpenSCAP for environment hardening prior to tests.

Use Cases and Adoption

Rally is used by cloud operators, vendors, and academics for release verification, performance regression detection, capacity planning, and vendor benchmarking at organizations including Red Hat, Canonical (company), Mirantis, Intel Corporation, Samsung, AT&T, Verizon, Bloomberg L.P., and research labs at Lawrence Berkeley National Laboratory and European Organization for Nuclear Research. It supports certification workflows similar to OpenStack Foundation testing programs and is incorporated into commercial test suites by companies like HP Enterprise and IBM. Rally-driven reports inform procurement, SLA verification, and scaling strategies in production and research clouds.

Category:OpenStack