Karine DilanyanWe are excited to introduce Atmosphere v7.0.0 (OpenStack 2025.2 Flamingo version), a major release packed with new operating system support, feature enhancements across the stack, stability improvements, and critical fixes that elevate the overall reliability and performance of Atmosphere-powered clouds. This release marks a significant step forward in making large-scale Kubernetes and OpenStack deployments even more resilient, maintainable, and future-proof.
With this release, operators gain improved observability, streamlined backup workflows, expanded platform compatibility, and multiple networking and storage enhancements—all designed to strengthen cloud operations while reducing administrative overhead.
New Features
Expanded Operating System Support
This release introduces support for Rocky Linux 9 and AlmaLinux 9 across both Ceph and Kubernetes collections. This provides operators with broader deployment flexibility on modern, secure enterprise Linux distributions.
Streamlined Percona Backup Operations
Percona backup jobs now automatically use a default backup image, eliminating the need to specify an image for each job.
This improvement:
- Reduces configuration overhead
- Ensures consistent tooling across the cluster
- Maintains flexibility when custom images are required
Improvements Across the Ecosystem
The release incorporates numerous enhancements from earlier v7.0.0 beta versions, including:
- Valkey service availability, a foundational component enabling Octavia Amphora V2 support
- Support for frr-k8s deployments for BGP routing with OVN
- Multiple new configuration options across Keystone, Neutron, Barbican, Cinder, Designate, Heat, Horizon, Ironic, Manila, Nova, Octavia, Placement, and more
- Improved DPDK interface configuration, supporting both interface names and PCI IDs
- Image naming prefix support to streamline integration with caching proxies
- Default TLS certificate usage for Ingress resources
- NVMe-oF, SMB, multi-cluster, and application-level dashboards added to Ceph monitoring
These additions collectively improve functionality across networking, storage, identity, security, and observability domains.
Upgrade Notes
Atmosphere v7.0.0 includes extensive upgrades to ensure improved performance and long-term maintainability:
- Cluster API driver for Magnum bumped to 0.34.2, delivering stability improvements and feature enhancements
- OVN Helm charts upgraded from 0.1.15 → 2025.1.0, introducing improved DB clustering, enhanced monitoring, refined RBAC, and more
- Open vSwitch Helm charts updated from 1.1.0 → 1.2.0
- Cert-Manager, Kubernetes collections, and Portworx components receive substantial patches and version bumps
- Multiple layered upgrades introduced across OpenStack, container images, operators, and ingress components throughout beta versions
These upgrades ensure compatibility with modern Kubernetes versions, improve cluster lifecycle operations, and provide a more consistent deployment experience.
Bug Fixes
This release incorporates a wide range of bug fixes to ensure smooth operations across all layers of the cloud stack, including:
- Ensuring OpenStack Resource Controller runs only on control-plane nodes
- Fixes for Helm release upgrade failures involving Jobs
- Proper image mirroring via
image_manifest - Numerous fixes to Neutron, Nova, Cinder, OVN, Manila, Ironic, and others covering database synchronization, authentication overrides, migration issues, monitoring accuracy, certificate renewal, and DHCP behavior
- Stability improvements for Percona XtraDB Cluster, including refined readiness and liveness behaviors
- Critical corrections for TLS validation, SSH key handling, vGPU support, and resource configuration in Red Hat-based environments
Operators upgrading to the Flamingo version will find improved reliability and far fewer operational edge-case failures.
Other Enhancements
Atmosphere v7.0.0 (OpenStack 2025.2 Flamingo) brings significant ecosystem-level improvements:
- New OctaviaLoadBalancerMultipleMaster alert to identify multi-master conditions
- Enhanced Ceph, CoreDNS, and node exporter monitoring with refined dashboards and alerts
- Documentation improvements, including release notes for all supported versions
- Adoption of reno for unified release note management
- Image build pipeline optimizations with docker-bake
- Use of the faster, more reliable uv tool for Python virtual environments
- Support for Tap-as-a-Service (TaaS), enabling advanced port mirroring capabilities
- Pre-pulling OVN controller images to reduce upgrade cut-over time
These changes enhance developer workflows, improve build consistency, reduce operational toil, and expand networking observability capabilities.
Known Issues
A fix has been implemented for MTU mismatches on OVN metadata interfaces, ensuring MTU values stay consistent with underlying networks during deployment.
Security Improvements
This release strengthens cloud security posture through:
- Non-privileged execution for Horizon
- Updated CORS and ALLOWED_HOSTS configuration
- TLS 1.3 enforcement for libvirt’s remote API
- NGINX ingress security fixes, addressing multiple high-impact CVEs
These updates reduce attack surface and align Atmosphere with modern security best practices.
Get Started with Flamingo
Atmosphere v7.0.0 (OpenStack 2025.2 Flamingo) release reflects our ongoing commitment to delivering a resilient, secure, and high-performance cloud platform. With expanded OS support, upgraded operators and Helm charts, significant bug fixes, and improved monitoring and observability, this release empowers operators to maintain efficient, stable, and future-ready infrastructure.
If you’re interested in deploying Flamingo or need support with upgrading, our team is here to help.