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Sönke Liebau

PROFILE

Sönke Liebau

Worked on Kubernetes operators within the Stackable ecosystem, delivering features and fixes across repositories such as stackabletech/trino-operator and stackabletech/secret-operator. Focused on enabling multi-tenant deployments by introducing distinct ServiceAccounts per Stacklet, upgrading dependencies, and refining RBAC resource management using Rust and YAML. Enhanced reliability by improving error handling with Snafu and updating documentation for Active Directory integration and Helm chart parameters. Addressed configuration correctness in Kubernetes environments by clarifying kubelet work directory usage and aligning Helm parameters, reducing misconfiguration risk. Maintained clear changelogs and inline documentation to support maintainability and onboarding for future contributors and users.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

7Total
Bugs
2
Commits
7
Features
5
Lines of code
258
Activity Months3

Work History

December 2025

1 Commits

Dec 1, 2025

For 2025-12, stackabletech/secret-operator delivered targeted bug fixes and documentation improvements to improve Kubernetes deployment reliability. Specifically, the Kubelet Directory Configuration Correctness bug was fixed by clarifying the kubelet work directory for k0s and correcting the helm parameter name, with documentation updated accordingly. These changes reduce misconfiguration risk and support toil, while maintaining a tight change scope.

August 2025

1 Commits • 1 Features

Aug 1, 2025

Concise monthly summary for 2025-08 focusing on features delivered, major issues addressed, and the resulting impact for stackabletech/secret-operator.

November 2024

5 Commits • 4 Features

Nov 1, 2024

November 2024 monthly performance summary. Focused on delivering multi-Stacklet isolation across the Stackable ecosystem by applying a patched op-rs (addressing SUP-148), updating dependency and platform versions, and refreshing tests and changelogs to reflect breaking changes in ServiceAccounts management. The work enhances multi-tenant scalability, upgrade safety, and RBAC reliability across the operator portfolio.

Activity

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Quality Metrics

Correctness82.8%
Maintainability82.8%
Architecture82.8%
Performance65.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

MarkdownNixRustYAMLasciidocjinjayaml

Technical Skills

Active Directory IntegrationBuild SystemsCI/CDDependency ManagementError HandlingHelmKubernetesKubernetes OperatorsOperator DevelopmentRBACRustSystem Programmingdocumentation

Repositories Contributed To

6 repos

Overview of all repositories you've contributed to across your timeline

stackabletech/secret-operator

Aug 2025 Dec 2025
2 Months active

Languages Used

Rustasciidoc

Technical Skills

Active Directory IntegrationError HandlingRustSystem ProgrammingHelmKubernetes

stackabletech/trino-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

MarkdownYAML

Technical Skills

CI/CDKubernetesOperator Development

stackabletech/superset-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

jinjayaml

Technical Skills

KubernetesOperator Development

stackabletech/nifi-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

YAML

Technical Skills

KubernetesOperator Development

stackabletech/hive-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

NixRust

Technical Skills

Build SystemsDependency ManagementKubernetes Operators

stackabletech/hdfs-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

MarkdownRust

Technical Skills

KubernetesOperator DevelopmentRBACRust