stackrox/collector
Nov 2024 – Sep 2025
6 Months active
Languages Used
C++YAMLMarkdownyamlGit
Technical Skills
AnsibleConfiguration ManagementContainerizationLoggingNetwork ProgrammingRate Limiting
Giles Hutton
PROFILE
Giles Hutton
Graham Hutton contributed to the stackrox/collector repository by engineering features and fixes that improved reliability, observability, and automation in containerized environments. He implemented per-container network event rate limiting and enhanced network monitoring by extending system call coverage, using C++ and YAML for configuration and system programming. His work included consolidating Docker image strategies for reproducible deployments, refining CI/CD pipelines with GitHub Actions and Tekton, and automating VM provisioning and teardown with Ansible. By addressing kernel compatibility, VM cleanup, and CI stability, Graham delivered robust solutions that reduced operational friction and enabled smoother releases, demonstrating depth in infrastructure and release engineering.
Overall Statistics
Feature vs Bugs
55%Features
Repository Contributions
15Total
Bugs
5
Commits
15
Features
6
Lines of code
697
Activity Months6
Your Network
2570 people
Work History
September 2025
1 Commits
Sep 1, 2025Month: 2025-09 — Focused on stabilizing the collector CI by temporarily removing SLES test configurations in GitHub Actions to prevent provisioning-related failures. This change minimizes flaky CI runs while provisioning issues are being resolved, enabling continued development and faster feedback. A TODO was added to re-enable the SLES tests once provisioning is fixed. Commit reference captured for traceability: 3bcd2d96a5d34244c489b1c50cd0839161830289 (Remove SLES tests from GHA).
1 Commits
Sep 1, 2025Month: 2025-09 — Focused on stabilizing the collector CI by temporarily removing SLES test configurations in GitHub Actions to prevent provisioning-related failures. This change minimizes flaky CI runs while provisioning issues are being resolved, enabling continued development and faster feedback. A TODO was added to re-enable the SLES tests once provisioning is fixed. Commit reference captured for traceability: 3bcd2d96a5d34244c489b1c50cd0839161830289 (Remove SLES tests from GHA).
September 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025: Strengthened reliability and release workflow for stackrox/collector. Delivered VM cleanup reliability for IBM Cloud by ensuring inventory records are created even if VM creation fails, fixed Falco kernel compatibility for 6.15, and improved release automation docs to clarify versioning and enforce dry-run verification. These changes reduce orphaned resources, ensure safer cleanup, and enhance release readiness.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025: Strengthened reliability and release workflow for stackrox/collector. Delivered VM cleanup reliability for IBM Cloud by ensuring inventory records are created even if VM creation fails, fixed Falco kernel compatibility for 6.15, and improved release automation docs to clarify versioning and enforce dry-run verification. These changes reduce orphaned resources, ensure safer cleanup, and enhance release readiness.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly work summary focusing on stabilizing CI infrastructure and VM lifecycle operations for stackrox/collector. Removed Ubuntu 20.04 from CI targets to ensure builds run on actively supported OS versions and reduce maintenance burden. Fixed VM destruction reliability by using inventory_hostname in Ansible roles, improving host-target accuracy during teardown (notably for s390x). These changes reduce CI flakiness, prevent destructive actions on wrong hosts, and improve multi-arch pipeline reliability.
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly work summary focusing on stabilizing CI infrastructure and VM lifecycle operations for stackrox/collector. Removed Ubuntu 20.04 from CI targets to ensure builds run on actively supported OS versions and reduce maintenance burden. Fixed VM destruction reliability by using inventory_hostname in Ansible roles, improving host-target accuracy during teardown (notably for s390x). These changes reduce CI flakiness, prevent destructive actions on wrong hosts, and improve multi-arch pipeline reliability.
June 2025
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025 — Stackrox/collector: Delivered a Docker image strategy consolidation with a revision-based tag, removing slim/base/latest variants and introducing a single tag. This required updates across CI workflows, Ansible playbooks, Tekton pipelines, and user/docs to reflect the change. No major bugs fixed this period. Impact: simplifies image publishing, reduces tagging drift, and improves deployment reproducibility, enabling faster releases and easier maintenance. Technologies/skills demonstrated: Docker image strategy, CI/CD (Tekton pipelines, workflow updates), release engineering, Ansible, and documentation discipline. Traceability: aligned with ROX-18384 work items; commits include f3b8b351153584c64e7b80f61ab9cd59c21a80cb, a575a816b7aae24cf83160fa37164ca6aec8d1c0, and 77d0180467c66ff246cbd88f69d15eb8ad31a258.
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025 — Stackrox/collector: Delivered a Docker image strategy consolidation with a revision-based tag, removing slim/base/latest variants and introducing a single tag. This required updates across CI workflows, Ansible playbooks, Tekton pipelines, and user/docs to reflect the change. No major bugs fixed this period. Impact: simplifies image publishing, reduces tagging drift, and improves deployment reproducibility, enabling faster releases and easier maintenance. Technologies/skills demonstrated: Docker image strategy, CI/CD (Tekton pipelines, workflow updates), release engineering, Ansible, and documentation discipline. Traceability: aligned with ROX-18384 work items; commits include f3b8b351153584c64e7b80f61ab9cd59c21a80cb, a575a816b7aae24cf83160fa37164ca6aec8d1c0, and 77d0180467c66ff246cbd88f69d15eb8ad31a258.
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 Monthly Summary — stackrox/collector Key features delivered this month: - SLES VM Registration Before Podman Installation: Implemented registration of SLES VMs prior to Podman install using 'registercloudguest --force-new' with retry logic to ensure the VM is recognized before software provisioning. Commit 07c38b5eb79efe9aee958f189e05000df1a4194f (Register SLES VMs before installing podman, PR #1978). - Network monitoring enhancement: include accept4 system call in NetworkSignalHandler: Extended monitoring to include the accept4 system call for finer-grained network event visibility. Commit 69fc54be03e2731d13ebffa3ab20f6f43c3e3f83 (Adds accept4 to NetworkSignalHandler, PR #1975). Major bugs fixed: - No major bugs fixed this month. Focus remained on delivering features and stabilizing provisioning and observability. Overall impact and accomplishments: - Improved VM onboarding reliability for SLES environments, reducing setup failures before Podman-based workflows. - Increased network observability with accept4 event coverage, aiding faster incident detection and response. - Strengthened deployment readiness and monitoring through targeted changes in stackrox/collector, contributing to smoother releases and fewer post-deploy issues. Technologies/skills demonstrated: - Automation and retry logic in VM provisioning, integration with registercloudguest and Podman readiness checks. - System-call aware network monitoring and instrumentation via NetworkSignalHandler enhancements. - Code ownership and cross-team collaboration evident in changes to stackrox/collector (commit-level traceability to #1978 and #1975).
2 Commits • 2 Features
Dec 1, 2024December 2024 Monthly Summary — stackrox/collector Key features delivered this month: - SLES VM Registration Before Podman Installation: Implemented registration of SLES VMs prior to Podman install using 'registercloudguest --force-new' with retry logic to ensure the VM is recognized before software provisioning. Commit 07c38b5eb79efe9aee958f189e05000df1a4194f (Register SLES VMs before installing podman, PR #1978). - Network monitoring enhancement: include accept4 system call in NetworkSignalHandler: Extended monitoring to include the accept4 system call for finer-grained network event visibility. Commit 69fc54be03e2731d13ebffa3ab20f6f43c3e3f83 (Adds accept4 to NetworkSignalHandler, PR #1975). Major bugs fixed: - No major bugs fixed this month. Focus remained on delivering features and stabilizing provisioning and observability. Overall impact and accomplishments: - Improved VM onboarding reliability for SLES environments, reducing setup failures before Podman-based workflows. - Increased network observability with accept4 event coverage, aiding faster incident detection and response. - Strengthened deployment readiness and monitoring through targeted changes in stackrox/collector, contributing to smoother releases and fewer post-deploy issues. Technologies/skills demonstrated: - Automation and retry logic in VM provisioning, integration with registercloudguest and Podman readiness checks. - System-call aware network monitoring and instrumentation via NetworkSignalHandler enhancements. - Code ownership and cross-team collaboration evident in changes to stackrox/collector (commit-level traceability to #1978 and #1975).
December 2024
November 2024
4 Commits • 1 Features
Nov 1, 2024November 2024 performance and reliability improvements in stackrox/collector: Implemented per-container network event rate limiting to reduce noise and stabilize telemetry; fixed quay.io login on SLES by using Podman with SELinux settings; included config parsing and logging refinements to support rate limiting; overall, these changes improve telemetry quality, stability, and security posture across containerized environments.
November 2024
4 Commits • 1 Features
Nov 1, 2024November 2024 performance and reliability improvements in stackrox/collector: Implemented per-container network event rate limiting to reduce noise and stabilize telemetry; fixed quay.io login on SLES by using Podman with SELinux settings; included config parsing and logging refinements to support rate limiting; overall, these changes improve telemetry quality, stability, and security posture across containerized environments.
Activity
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Quality Metrics
Correctness91.4%
Maintainability92.0%
Architecture89.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++GitMarkdownYAMLyaml
Technical Skills
AnsibleCI/CDCloud InfrastructureConfiguration ManagementContainerizationDockerDocumentationGitHub ActionsLoggingNetwork ProgrammingRate LimitingRefactoringRelease ManagementSubmodule ManagementSystem Administration
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