rackerlabs/understack
Oct 2024 – Oct 2025
13 Months active
Languages Used
YAMLyamlDockerfilePythonShellTOMLSQLGo
Technical Skills
Configuration ManagementDevOpsInfrastructure as CodeKubernetesKustomizeAPI Integration
Marek Skrobacki
PROFILE
Marek Skrobacki
Marek Skrobacki engineered and maintained core infrastructure automation for the rackerlabs/understack repository, delivering end-to-end provisioning, storage orchestration, and network automation for OpenStack-based environments. He architected event-driven workflows using Python, Ansible, and Kubernetes, integrating NetApp ONTAP storage, Nautobot network management, and Argo Workflows to automate server and storage lifecycle operations. Marek refactored backend components for testability, improved observability with structured logging, and enhanced deployment reliability through robust CI/CD and containerization practices. His work addressed operational risks by implementing configurable orchestration, resilient error handling, and comprehensive test coverage, resulting in a maintainable, scalable platform supporting complex cloud infrastructure needs.
Overall Statistics
Feature vs Bugs
69%Features
Repository Contributions
313Total
Bugs
54
Commits
313
Features
121
Lines of code
40,707
Activity Months13
Your Network
23 peopleSame Organization
@rackspace.co.uk3
Work History
October 2025
14 Commits • 4 Features
Oct 1, 2025Concise monthly summary for 2025-10 focusing on delivered features, fixed issues, impact, and technologies used for rackerlabs/understack. Highlights include storage provisioning orchestration enhancements with Ansible, improved observability and testability for the IronicUnderstackDriver, platform cleanup with domain/RBAC alignment, improved UUID handling for storage cleanup, and updated GaleraDB/MariaDB recovery documentation.
14 Commits • 4 Features
Oct 1, 2025Concise monthly summary for 2025-10 focusing on delivered features, fixed issues, impact, and technologies used for rackerlabs/understack. Highlights include storage provisioning orchestration enhancements with Ansible, improved observability and testability for the IronicUnderstackDriver, platform cleanup with domain/RBAC alignment, improved UUID handling for storage cleanup, and updated GaleraDB/MariaDB recovery documentation.
October 2025
September 2025
63 Commits • 24 Features
Sep 1, 2025September 2025: NetApp Understack delivered end-to-end enhancements focusing on configurability, routing, automation, and reliability. Key architecture improvements, workflow templating, and server lifecycle hooks were implemented, alongside Ironic and Nautobot-driven capabilities to streamline IP provisioning and networking configuration. A strong emphasis on maintainability, test coverage, and observability reduced operational risk and prepared the platform for scalable deployments.
September 2025
63 Commits • 24 Features
Sep 1, 2025September 2025: NetApp Understack delivered end-to-end enhancements focusing on configurability, routing, automation, and reliability. Key architecture improvements, workflow templating, and server lifecycle hooks were implemented, alongside Ironic and Nautobot-driven capabilities to streamline IP provisioning and networking configuration. A strong emphasis on maintainability, test coverage, and observability reduced operational risk and prepared the platform for scalable deployments.
August 2025
45 Commits • 15 Features
Aug 1, 2025August 2025 was marked by substantial automation and reliability improvements across understack. Implemented RabbitMQ deployment reliability by distributing pods across hosts to mitigate single-host failures, enhancing uptime and resilience. Delivered a comprehensive SVM creation automation framework with end-to-end automation powered by the netapp-ontap SDK, including code refactors, project tagging validation, module logging, tests, and generic oslo_event handling. Introduced OSLO sensors for project creation events and integrated Argo Workflows to ensure orderly, output-unified automation. Expanded NetApp SVM/volume provisioning with a persistence of results, cleanup capabilities, basic deletion support, and default size adjustments, plus identity.project.update support. Added Nautobot integration for project_id mapping and lookups, including ansible project_name->project_id mappings and entrypoint fixes for undercloud-nautobot. Overall, these efforts improved provisioning speed, governance, observability, and resilience, with broader automated testing and quality controls.
45 Commits • 15 Features
Aug 1, 2025August 2025 was marked by substantial automation and reliability improvements across understack. Implemented RabbitMQ deployment reliability by distributing pods across hosts to mitigate single-host failures, enhancing uptime and resilience. Delivered a comprehensive SVM creation automation framework with end-to-end automation powered by the netapp-ontap SDK, including code refactors, project tagging validation, module logging, tests, and generic oslo_event handling. Introduced OSLO sensors for project creation events and integrated Argo Workflows to ensure orderly, output-unified automation. Expanded NetApp SVM/volume provisioning with a persistence of results, cleanup capabilities, basic deletion support, and default size adjustments, plus identity.project.update support. Added Nautobot integration for project_id mapping and lookups, including ansible project_name->project_id mappings and entrypoint fixes for undercloud-nautobot. Overall, these efforts improved provisioning speed, governance, observability, and resilience, with broader automated testing and quality controls.
August 2025
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for rackerlabs/understack. Focused on improving startup reliability of the Ironic service by precreating /var/lib/openstack-helm/tmp to prevent DriverLoadError during ipmitool driver load. This targeted change ensures the conductor startup initializes dependencies reliably and reduces startup failures, improving service availability. Implemented in the conductor startup path and committed as 74ec3be08d90af479425b2b1c7d608c4b200a584. Repository: rackerlabs/understack.
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for rackerlabs/understack. Focused on improving startup reliability of the Ironic service by precreating /var/lib/openstack-helm/tmp to prevent DriverLoadError during ipmitool driver load. This targeted change ensures the conductor startup initializes dependencies reliably and reduces startup failures, improving service availability. Implemented in the conductor startup path and committed as 74ec3be08d90af479425b2b1c7d608c4b200a584. Repository: rackerlabs/understack.
June 2025
9 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for rackerlabs/understack. Focused on hardening CI/CD, containerization, and infrastructure configurability. Key outcomes include CI Safe Merge Policy and Deployment Image Policy, containerization of understack-tests with CI integration and multi-stage Docker builds, new Ceph block pool ceph-block-single in Rook Helm chart, OpenStack logging interpretation documentation, and router removal robustness using PRECOMMIT_DELETE. These changes improve release safety, deployment reliability, test efficiency, storage configurability, developer onboarding, and operational triage.
9 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for rackerlabs/understack. Focused on hardening CI/CD, containerization, and infrastructure configurability. Key outcomes include CI Safe Merge Policy and Deployment Image Policy, containerization of understack-tests with CI integration and multi-stage Docker builds, new Ceph block pool ceph-block-single in Rook Helm chart, OpenStack logging interpretation documentation, and router removal robustness using PRECOMMIT_DELETE. These changes improve release safety, deployment reliability, test efficiency, storage configurability, developer onboarding, and operational triage.
June 2025
May 2025
35 Commits • 12 Features
May 1, 2025May 2025 performance summary for rackerlabs/understack. Key features delivered: - DexOp robustness and style improvements: enhanced certificate error handling, added nil checks, and code style cleanup. Commits: 44f966fd07304b4defed4b9dba09c2f63a7110db; 1357548f9651afa8dc25832a46ee561face5ef34; d237a170c93fed0c16d31810a063f3a1c9e4db13. - Argocd policy control enhancement: operators can configure syncPolicy. Commit: 9b4f813d5ea4f30cea035f1c8a921cfb17803884. - Rally scenarios addition: added basic Rally scenarios for baseline performance testing. Commit: 92aa4ed57df16af04ba1d0c9a5fc47a8a95e6da0. - Router/Port and OVN enhancements: refactor Port object manipulation, segmentation logic improvements, and added OVN client/ML2 integration with tests; localnet port management updates and test coverage for router interfaces. (Multiple commits across these areas.) - Dev tooling and CI updates: YAML linting fixes, Poetry 2 migration, pre-commit updates, and Trufflehog scanning integrated into CI/CD. (Multiple commits: including chore yaml linting, poetry version, pre-commit changes, and Trufflehog workflows.) Major bugs fixed: - Segment management robustness: handle existing segments gracefully and manage failed deletions. Commits: eec1fb9da0da3de21c391299c7f2392be0366829; dcf2980899f245fe65ded3ffd5bf96025c2a23c9. - ExistingSegment typing and logic fixes: WIP typing and logic corrections. Commit: 211418f82b7fa978346f408f47bb3b1fa635de57. Overall impact and accomplishments: - Increased reliability and resilience of DexOp workflows, improved network orchestration with OVN/ML2, and more flexible deployment policies through configurable syncPolicy. CI/CD reliability improved via Poetry 2 migration and secret scanning with Trufflehog. Enhanced test coverage and maintainability reduce risk in production changes and accelerate iteration. Technologies/skills demonstrated: - Python development and refactoring, OVN/ML2 networking integration, router and port lifecycle management, test-driven development, and modern CI/CD practices (Poetry 2, pre-commit, Trufflehog, GitHub Actions).
May 2025
35 Commits • 12 Features
May 1, 2025May 2025 performance summary for rackerlabs/understack. Key features delivered: - DexOp robustness and style improvements: enhanced certificate error handling, added nil checks, and code style cleanup. Commits: 44f966fd07304b4defed4b9dba09c2f63a7110db; 1357548f9651afa8dc25832a46ee561face5ef34; d237a170c93fed0c16d31810a063f3a1c9e4db13. - Argocd policy control enhancement: operators can configure syncPolicy. Commit: 9b4f813d5ea4f30cea035f1c8a921cfb17803884. - Rally scenarios addition: added basic Rally scenarios for baseline performance testing. Commit: 92aa4ed57df16af04ba1d0c9a5fc47a8a95e6da0. - Router/Port and OVN enhancements: refactor Port object manipulation, segmentation logic improvements, and added OVN client/ML2 integration with tests; localnet port management updates and test coverage for router interfaces. (Multiple commits across these areas.) - Dev tooling and CI updates: YAML linting fixes, Poetry 2 migration, pre-commit updates, and Trufflehog scanning integrated into CI/CD. (Multiple commits: including chore yaml linting, poetry version, pre-commit changes, and Trufflehog workflows.) Major bugs fixed: - Segment management robustness: handle existing segments gracefully and manage failed deletions. Commits: eec1fb9da0da3de21c391299c7f2392be0366829; dcf2980899f245fe65ded3ffd5bf96025c2a23c9. - ExistingSegment typing and logic fixes: WIP typing and logic corrections. Commit: 211418f82b7fa978346f408f47bb3b1fa635de57. Overall impact and accomplishments: - Increased reliability and resilience of DexOp workflows, improved network orchestration with OVN/ML2, and more flexible deployment policies through configurable syncPolicy. CI/CD reliability improved via Poetry 2 migration and secret scanning with Trufflehog. Enhanced test coverage and maintainability reduce risk in production changes and accelerate iteration. Technologies/skills demonstrated: - Python development and refactoring, OVN/ML2 networking integration, router and port lifecycle management, test-driven development, and modern CI/CD practices (Poetry 2, pre-commit, Trufflehog, GitHub Actions).
April 2025
44 Commits • 25 Features
Apr 1, 2025April 2025 monthly performance summary for Understack (rackerlabs/understack). Focused on scalability, reliability, and developer experience across platform components. Delivered foundational Concurrency/scale improvements, platform scaffolding, secure secret management, reconciliation reliability, and packaging/deployment enhancements. Invested in CI/CD quality and toolchain upgrades to accelerate delivery while maintaining security and governance.
44 Commits • 25 Features
Apr 1, 2025April 2025 monthly performance summary for Understack (rackerlabs/understack). Focused on scalability, reliability, and developer experience across platform components. Delivered foundational Concurrency/scale improvements, platform scaffolding, secure secret management, reconciliation reliability, and packaging/deployment enhancements. Invested in CI/CD quality and toolchain upgrades to accelerate delivery while maintaining security and governance.
April 2025
March 2025
9 Commits • 4 Features
Mar 1, 2025March 2025 monthly summary for rackerlabs/understack highlighting delivered infrastructure enhancements, stability fixes, and security improvements across the platform. Focused on upgrading storage capabilities, refining ESXi network initialization, aligning deployments with namespace conventions, and applying CVE patches to strengthen security posture. Delivered notable improvements to ArgoCD sync stability to avoid false positives and reduce risk of network disruption.
March 2025
9 Commits • 4 Features
Mar 1, 2025March 2025 monthly summary for rackerlabs/understack highlighting delivered infrastructure enhancements, stability fixes, and security improvements across the platform. Focused on upgrading storage capabilities, refining ESXi network initialization, aligning deployments with namespace conventions, and applying CVE patches to strengthen security posture. Delivered notable improvements to ArgoCD sync stability to avoid false positives and reduce risk of network disruption.
February 2025
27 Commits • 14 Features
Feb 1, 2025February 2025: Delivered stability and deployment velocity improvements across code quality, network behavior, Nautobot client hardening, packaging compatibility, and OpenStack deployment flexibility. This work reduces operational risk, accelerates CI/CD, and enhances platform compatibility for diverse environments.
27 Commits • 14 Features
Feb 1, 2025February 2025: Delivered stability and deployment velocity improvements across code quality, network behavior, Nautobot client hardening, packaging compatibility, and OpenStack deployment flexibility. This work reduces operational risk, accelerates CI/CD, and enhances platform compatibility for diverse environments.
February 2025
January 2025
9 Commits • 1 Features
Jan 1, 2025January 2025 performance highlights: Stabilized production Docker image builds for nova-flavors and strengthened Nautobot-based network provisioning. The work reduces deployment risk, improves network reliability, and demonstrates strong automation and cross-team collaboration.
January 2025
9 Commits • 1 Features
Jan 1, 2025January 2025 performance highlights: Stabilized production Docker image builds for nova-flavors and strengthened Nautobot-based network provisioning. The work reduces deployment risk, improves network reliability, and demonstrates strong automation and cross-team collaboration.
December 2024
7 Commits • 4 Features
Dec 1, 2024December 2024 (rackerlabs/understack) monthly summary: Delivered key OpenStack and UnderStack improvements focused on stability, configurability, and upstream alignment. Key outcomes include adjusting the Pod Disruption Budget (PDB) default to minAvailable=0 across core OpenStack components to prevent maintenance-induced outages at low replica counts; fixing container builds by ensuring psutil is built as a wheel for ironic-nautobot-client; upgrading the Nova Helm chart to 0.3.47 to incorporate upstream fixes; centralizing flavor configuration via a ConfigMap for enroll-server (FLAVORS_DIR) to simplify management and remove brittle path dependencies; and enhancing UnderStackL3ServicePlugin with API/classmethod refinements and a decorator for Neutron resource extension, along with disabling the port_forwarding plugin to stabilize L3 Router operations. These changes improve maintainability, deployment reliability, and interoperability with OpenStack components while showcasing robust Kubernetes, Helm, and packaging practices.
7 Commits • 4 Features
Dec 1, 2024December 2024 (rackerlabs/understack) monthly summary: Delivered key OpenStack and UnderStack improvements focused on stability, configurability, and upstream alignment. Key outcomes include adjusting the Pod Disruption Budget (PDB) default to minAvailable=0 across core OpenStack components to prevent maintenance-induced outages at low replica counts; fixing container builds by ensuring psutil is built as a wheel for ironic-nautobot-client; upgrading the Nova Helm chart to 0.3.47 to incorporate upstream fixes; centralizing flavor configuration via a ConfigMap for enroll-server (FLAVORS_DIR) to simplify management and remove brittle path dependencies; and enhancing UnderStackL3ServicePlugin with API/classmethod refinements and a decorator for Neutron resource extension, along with disabling the port_forwarding plugin to stabilize L3 Router operations. These changes improve maintainability, deployment reliability, and interoperability with OpenStack components while showcasing robust Kubernetes, Helm, and packaging practices.
December 2024
November 2024
47 Commits • 14 Features
Nov 1, 2024November 2024 (2024-11) monthly summary for rackerlabs/understack focused on stability, inventory enrichment, flavor management, and deployment automation. Delivered targeted features, fixed critical issues, and strengthened CI/CD practices to accelerate reliable provisioning and consistent flavor handling across environments.
November 2024
47 Commits • 14 Features
Nov 1, 2024November 2024 (2024-11) monthly summary for rackerlabs/understack focused on stability, inventory enrichment, flavor management, and deployment automation. Delivered targeted features, fixed critical issues, and strengthened CI/CD practices to accelerate reliable provisioning and consistent flavor handling across environments.
October 2024
3 Commits
Oct 1, 2024October 2024: Focused on stabilizing deployment and enrollment workflows for rackerlabs/understack. Delivered two critical bug fixes that improve deployment reliability and enrollment reliability, reducing risk of downtime and enabling faster, safer releases.
3 Commits
Oct 1, 2024October 2024: Focused on stabilizing deployment and enrollment workflows for rackerlabs/understack. Delivered two critical bug fixes that improve deployment reliability and enrollment reliability, reducing risk of downtime and enabling faster, safer releases.
October 2024
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Quality Metrics
Correctness89.2%
Maintainability89.8%
Architecture86.6%
Performance81.0%
AI Usage22.0%
Skills & Technologies
Programming Languages
BashDockerfileGoINIIPythonJSONJavaScriptMakefileMarkdownNix
Technical Skills
API Client DevelopmentAPI DevelopmentAPI IntegrationAPI Integration TestingAPI TestingAnsibleArgo CDArgo EventsArgo WorkflowsArgoCDArgument ParsingAuthenticationAutomationBMC ManagementBackend Development
Repositories Contributed To
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