January 2026 monthly work summary focusing on dependency modernization and cross-repo Whippet migrations to improve performance, stability, and maintainability across Bottlerocket components. Key upgrades and migrations were executed with a focus on business value, reliability, and future-ready infrastructure.

In December 2025, delivered SBOM-focused improvements across Bottlerocket kernel and core kits to strengthen supply-chain transparency and compliance. Key features include: 1) SBOM integration into the installation/build process in bottlerocket-kernel-kit via _spec_install_post override, enabling automatic component tracking; 2) SBOM generation accuracy fixes for Rust-based packages by correcting the scanned build directory, ensuring accurate compliance data; 3) standardization of SBOM generation overrides for Rust packages across bottlerocket-core-kit to scan the correct directory for multiple packages (os, netdog, early-boot-config, static-pods, rottweiler). These changes improve dependency tracking, reduce audit risk, and enable consistent SBOM reporting across repos. Core impact: improved security posture, regulatory readiness, and operational efficiency in packaging workflows.

November 2025 — bottlerocket-core-kit: Focused on stabilizing directory contents tests to improve reliability of the test suite and CI feedback loop. Delivered a fix that removes a flaky test and stabilizes another to ensure consistent coverage for directory contents functionality. This reduces CI flakiness in the core kit, enabling faster validation of changes affecting directory contents and increasing confidence in release readiness.

October 2025 monthly summary for bottlerocket-os/bottlerocket-core-kit. Implemented a custom Bloodhound test results serializer to preserve existing JSON output structure while ensuring override statuses are accurately represented. Added unit tests to validate the new serialization logic. All changes maintain backward compatibility and reduce downstream risk for tooling that consumes test results.

September 2025 (2025-09) — Bottlerocket Core Kit delivered Kubernetes security/compliance tooling and CIS cipher suite hardening to strengthen security posture and enable compliant Kubernetes deployments. Key outcomes include integration of K8S04021000 checker with Bottlerocket IAM handling JSON overrides, a robust test override system to skip incompatible compliance tests in Kubernetes environments, and removal of weak RSA cipher suites to align with CIS benchmarks. These changes reduce risk, improve compliance readiness, and accelerate secure deployments across environments.

Summary for 2025-08: Implemented feature to configurably enable kubelet staticPodPath via settings.kubernetes.static-pods-enabled, added an if_not_null helper to safely manage staticPodPath, and upgraded bottlerocket-settings-sdk with corresponding Cargo.lock and Cargo.toml updates. This work aligns kubelet behavior with declarative settings, improves operability across environments, and reduces manual configuration drift. No major bugs were reported this month; primary focus was feature delivery and dependency modernization to improve configuration reliability and future maintainability.

July 2025 monthly summary focused on security hardening, release readiness, and kernel-kit enhancements across Bottlerocket components. Delivered targeted NVIDIA advisories, updated drivers, and kernel-kit upgrades to support new releases while improving isolation and system stability. These actions reduce CVE exposure, accelerate patch cycles, and position the platform for broader hardware support and performance improvements.

June 2025 monthly summary: Delivered core kernel-kit upgrades and security enhancements across Bottlerocket projects, aligning with upstream Linux kernel 6.12.29 and v3.0.1 advisories. Completed release-readiness activities for v3.0.1 and ensured dependency hygiene by updating Twoliter references, improving security posture, compatibility across architectures, and maintainability for customers and partners.

May 2025 monthly summary for bottlerocket-os/bottlerocket-kernel-kit focusing on security advisory delivery and vulnerability communication. Delivered an NVIDIA kmod advisory for CVE-2025-23244 and patched driver version 535.247.01 across kmod-5.15-nvidia and kmod-6.1-nvidia, with user-facing documentation. No other major bugs fixed within this scope.

April 2025 monthly summary focusing on key accomplishments and delivering business value across Bottlerocket components. Key features delivered include NVIDIA r570 driver packaging for Linux kernels 6.1 and 6.12 in bottlerocket-os/bottlerocket-kernel-kit, with package definitions for kmod-6.1-nvidia-r570 and kmod-6.12-nvidia-r570, including configuration files, build scripts, service definitions, and cross-architecture compatibility (commits e47356bc0e0cbe6a031651a49de2f5a8d0e0ea2c; 38a1a9a10529c79d669db1fde4350181d95dcddf). Also added NVIDIA MIG Manager build compatibility on aarch64 by adjusting the spec to run post-build and enabling a global Rust flag to avoid shared linking (commit fdf85dc88557e8295f2e67e390e1ba11d85b08fe). In bottlerocket, upgraded NVIDIA kernel modules to r570 to maintain compatibility with newer NVIDIA driver releases on AWS ECS and Kubernetes for the 6.1 kernel (commit 6bdc060ca1a684ca32d898598213ceb1d3f08c3f). These changes strengthen driver deployment reliability and cloud-native compatibility across common workloads. Major bugs fixed include NVIDIA MIG Manager build compatibility on aarch64, addressing build/deploy issues by allowing post-build execution and resolving shared linking issues via a global Rust flag, improving cross-environment deployment consistency (commit fdf85dc88557e8295f2e67e390e1ba11d85b08fe).

March 2025 monthly summary focusing on key accomplishments, major bugs fixed, and overall impact across bottlerocket-os repositories. Key features delivered include a kernel and NVIDIA module compatibility update for aws-ecs-1 to kernel 5.15, with updates to Cargo.toml for aws-ecs-1 and aws-ecs-1-nvidia variants. Major bugs fixed center on CI/CD stability: pinning GitHub Actions to specific SHAs to ensure reproducible builds and resolving env handling issues by removing the -e flag from cargo make. Additional CI/CD improvements in bottlerocket-kernel-kit stabilize builds and simplify PR checks by removing the golangci-lint workflow. Overall impact includes reduced CI flakiness, faster PR feedback, and safer deployment of workloads on newer kernels with NVIDIA support. Demonstrated technologies and skills: kernel version management, NVIDIA module compatibility, Rust Cargo manifest updates, CI/CD engineering, GitHub Actions pinning, env var handling, and cross-repo coordination for build reproducibility.

February 2025 monthly summary for bottlerocket-os/bottlerocket-kernel-kit. Focused on delivering a secure, maintainable kernel-kit release with updated kernels, packaging, and advisories.

December 2024 monthly summary focusing on key platform upgrades, release hygiene, and code quality across Bottlerocket repos. Delivered SDK dependency upgrade, lint cleanups, kernel kit versioning and kernel upgrades, and synchronized kernel-kit upgrade across the Bottlerocket parent repository. These efforts improved security posture, stability, and maintainability, enabling faster release cycles and higher business value.

November 2024 monthly summary for bottlerocket-core-kit. Focused on dependency upgrades, static analysis hygiene, and build tooling improvements to boost stability, performance, and maintainability. Key outcomes include upgrading the Bottlerocket SDK to v0.47.0 for bug fixes and new capabilities, updating binutils to 2.41 with related build config changes, and addressing Clippy lint issues to improve code quality and static analysis coverage. These changes enhanced build reliability, performance potential, and developer efficiency, with clear traceability via commits.