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Ethan Mosbaugh

PROFILE

Ethan Mosbaugh

Ethan developed and maintained core platform features for the Replicated suite, focusing on the embedded-cluster and kots repositories. He engineered robust upgrade workflows, dynamic templating engines, and high-availability deployment logic, using Go and TypeScript to ensure reliability and maintainability. His work included modernizing CI/CD pipelines, strengthening API surface validation, and integrating Helm for Kubernetes operations. Ethan addressed security and dependency management, improved test coverage with Playwright, and enhanced user experience through UI and telemetry updates. By automating version management and refining configuration flows, he delivered scalable, resilient systems that reduced deployment risk and accelerated release cycles across environments.

Overall Statistics

Feature vs Bugs

66%Features

Repository Contributions

380Total
Bugs
68
Commits
380
Features
131
Lines of code
256,877
Activity Months13

Work History

October 2025

16 Commits • 7 Features

Oct 1, 2025

October 2025 monthly performance summary for replicatedhq repositories (kots and embedded-cluster). Delivered reliable CI improvements, expanded templating capabilities, and upgraded toolchains, enabling faster iterations, more robust deployments, and better observability. Business value was realized through increased pipeline stability, safer end-to-end tests, and enhanced configurability across templates and deployments.

September 2025

39 Commits • 14 Features

Sep 1, 2025

September 2025 monthly summary focusing on business value and technical achievements across multiple repos. Delivered core features, reliability improvements, and security/stability upgrades that reduce risk and accelerate release cycles. Key outcomes span license integrity, user recovery flows, UI robustness, CI/CD reliability, and broad dependency upgrades across kots, embedded-cluster, kURL, and troubleshoot.

August 2025

41 Commits • 15 Features

Aug 1, 2025

August 2025: Delivered broad, business-value improvements across replicatedhq/embedded-cluster, replicatedhq/kots, replicatedhq/kURL.sh, and replicatedhq/kURL. Focus areas included CI/CD modernization, test reliability, and deployment readiness for newer Kubernetes versions. Key outcomes include: modernized CI/CD pipelines and reliability across multiple environments with faster integration tests, multi-version k0s builds, and streamlined release processes; embedded-cluster version management with IsV3 support and automated k0s version updates to keep clusters current; installation telemetry enhancements and robust license data parsing to improve governance and compliance. Additional tooling and platform upgrades (AWS SDK v2 migration, Velero upgrades, Go/TS/npm ecosystem updates, Ubuntu 24.04 base with dynamic cri-tools) enabled performance, security, and maintainability. UI/UX improvements and code-quality enhancements reduced customer-facing frictions and strengthened developer experience, while CI workflow stabilization reduced E2E and test-grid flakiness. Overall impact: faster, safer deployments, clearer instrumentation for operations, and improved developer experience driving faster time-to-value for customers.

July 2025

63 Commits • 19 Features

Jul 1, 2025

July 2025 performance highlights across replicated HQ repos: Delivered substantive Kubernetes platform improvements in embedded-cluster, strengthened API configurability and safety, modernized CI/CD tooling and dependency management, and improved CI reliability and test stability across the stack. Key outcomes include enhanced Kubernetes feature configuration, robust CLI flag handling and REST client stability, expanded API template capabilities, and a broad modernization of the Go toolchain, build tooling, and dependencies. The work reduced upgrade friction, increased deployment reliability, and enabled more dynamic configuration with lower risk of misconfigurations. Business value: Faster, safer deployments; reduced manual maintenance; improved platform stability and developer productivity through standardized tooling and clearer API behavior. Technologies/skills demonstrated: Go, Kubernetes, REST client concurrency handling, API template/function support, Kubernetes controller tooling, Go 1.24.x, controller-runtime, kustomize, npm tooling, CI/CD best practices, and troubleshooting discipline.

June 2025

30 Commits • 11 Features

Jun 1, 2025

June 2025 monthly summary for Replicated projects (kots, troubleshoot, embedded-cluster). Focused on security remediation, runtime/config improvements, UI/UX enhancements, and CI/CD/test reliability to improve security posture, deployment reliability, and operator experience. Key work spanned three repositories with multiple commits addressing archiver vulnerability remediation, runtime/network configuration refactors, and CI/CD stabilization.

May 2025

25 Commits • 7 Features

May 1, 2025

May 2025 monthly summary for replicatedhq development teams. Focused on delivering key features and stabilizing CI/Release pipelines across kURL, embedded-cluster, and kots, with architectural improvements to CI infra, CA handling, and API/docs tooling. Business value delivered includes more reliable release cycles, secure CA bundle support, robust test coverage, and improved HA compatibility for Velero and embedded cluster workflows. Technologies/skills demonstrated include Go concurrency fixes, CI/CD modernization, Kubernetes client enhancements, network resilience via retryable HTTP client, and API/docs tooling.

April 2025

18 Commits • 9 Features

Apr 1, 2025

April 2025 monthly development summary for the Replicated platform suite (embedded-cluster, replicated, kots). Delivered notable business-value through upgrade reliability improvements, security hardening, robust CLI tooling, and onboarding enhancements. Cross-repo work reduced upgrade time, improved resilience to interruptions, and prepared the ground for future feature delivery.

March 2025

27 Commits • 9 Features

Mar 1, 2025

2025-03 Monthly Summary — Key features delivered, major fixes, and overall impact across replicatedhq/kots, replicatedhq/embedded-cluster, and replicatedhq/troubleshoot. Focused on business value, reliability, and scalable improvements. Key features delivered: - Build/tooling upgrades: Go toolchain upgraded to 1.24 across Dockerfiles and go.mod; unpinned module versions to allow resolver to pick latest compatible dependencies; refined port-checking in Kubernetes utilities. - Playwright-based end-to-end testing migration and CI modernization: migrated E2E tests to Playwright; updated CI to Ubuntu 24.04 runners; added tests for online/airgap deployments and version checks to improve reliability and coverage. - Embedded clusters: custom domains and related tests: add support for custom domains (registry/proxy via env vars); enable custom-domain support in the upgrade service (2.2.0+); adjust support bundle behavior to avoid external URIs in embedded environments. - Admin Console and Metrics custom domains: enable user-defined domains for admin console access and metrics endpoints to support branding and multi-tenant deployments; ensure metrics reporting uses custom domains. - High Availability and Node Local Load Balancing for Embedded Cluster: improvements for HA with registry data migration, CRD handling, and Helm integration; added tests; node-local load balancing using Envoy with tests validating behavior after node resets and during HA installations. - Proxy security and test instrumentation: enforce Squid proxy whitelist; bolster proxy-related test logging and failure checks to catch TCP_DENIED events. - CI/Build infrastructure improvements: parallelize CI provisioning; strengthen GitHub token usage; update test harness; include manifest schema generation in builds. - Release data initialization and default no-proxy rules: load release data during initialization; extend default no-proxy configuration to include cloud metadata IPs. Major bugs fixed: - Safe image pull secret deletion in runPod collector: refactors logic so only secrets managed by troubleshoot.sh are deleted, preventing accidental deletion of unrelated secrets. Overall impact and accomplishments: - Substantial improvements in deployment reliability, test coverage, and CI efficiency; enhanced security posture with proxy and token practices; enabled branding and multi-tenant deployments through domain customization; stronger HA and networking resilience in embedded clusters. Technologies/skills demonstrated: - Go tooling and module management, Playwright-based E2E testing, Ubuntu 24.04 CI, Envoy-based node-local load balancing, CRD/Helm familiarity, Squid proxy hardening, and CI token/security best practices.

February 2025

38 Commits • 15 Features

Feb 1, 2025

February 2025 performance and reliability improvements across multiple repos, focusing on feature delivery, robustness of CI pipelines, and kernel/module diagnostics. Delivered key features, fixed critical reliability bugs, and enhanced tooling to support scalable operations.

January 2025

22 Commits • 8 Features

Jan 1, 2025

Monthly summary for 2025-01: Delivered a unified v1->v2 migration path for embedded clusters and KOTS, with manager integration, installer/config toggles, and enhanced status reporting; implemented robust manager integration tests and systemd lifecycle checks; strengthened disaster recovery with improved backup sequencing, resume-supported restores, and a dedicated restore command; optimized CI by gating resource-intensive tests behind main-branch pushes and introducing an e2e-main job; completed internal code cleanup and refactors to improve maintainability and reduce debt; delivered targeted UI bug fixes for pre-snapshot scripts and refactored WebSocket handling to a centralized Connection Manager.

December 2024

20 Commits • 7 Features

Dec 1, 2024

In December 2024, delivered cross-repo improvements focused on business continuity, reliability, and developer productivity across replicatedhq/kots, replicatedhq/embedded-cluster, and k0s. Key outcomes include robust disaster recovery modernization, enhanced snapshot/restore capabilities, CI/CD stability improvements, Velero compatibility updates, and faster ETCD recovery, aligning engineering work with meaningful business value.

November 2024

38 Commits • 8 Features

Nov 1, 2024

2024-11 Monthly Performance Summary across replicatedhq/embedded-cluster, k0sproject/k0s, replicatedhq/kURL, and replicatedhq/kots. Focused on delivering business value through reliability, observability, and user experience improvements in airgap deployments, diagnostics, upgrades, and CI/CD stability. Key deliverables and outcomes: - Airgap update reliability and cross-cloud IP discovery: centralized provider discovery, robust kubeconfig handling, and cross-cloud IP discovery improvements including AWS IMDSv2 and Azure specifics. - Diagnostics and support bundle reliability: ensured registry logs appear in support bundles and reliable collection of artifacts in airgapped environments. - Update prompts UX and CLI messaging improvements: enhanced prompts for newer app releases, sensible defaults for non-terminal sessions, and stdout-first logging to reduce interruptions. - CRD resilience and upgrade event reporting: hardened installation flows when CRDs are missing and centralized upgrade event reporting for better observability. - CI/testing infrastructure, compatibility, and maintenance: expanded dry-run tests, environment upgrade handling, dependency updates, and Go tooling improvements to improve CI reliability and feedback loops.

October 2024

3 Commits • 2 Features

Oct 1, 2024

Month: 2024-10 performance summary focusing on delivering robust rollback capabilities and upgrade reliability across two repositories (replicatedhq/kots and replicatedhq/embedded-cluster). Key outcomes include safer rollback workflows for embedded clusters, development environment rollback enablement, and a stabilized upgrade process with correct image tar handling and destination filename updates. These workstream improvements reduce risk during deployments, accelerate experimentation, and improve operational reliability through better configuration validation and store initialization.

Activity

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Quality Metrics

Correctness89.4%
Maintainability88.2%
Architecture85.4%
Performance80.4%
AI Usage21.2%

Skills & Technologies

Programming Languages

BashCSSDockerfileGoHTMLJSXJavaScriptMakefileMarkdownSCSS

Technical Skills

API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI developmentAWS SDKAirgap InstallationAutomationBackend DevelopmentBackup and RestoreBug FixBug FixingBuild AutomationBuild ConfigurationBuild Engineering

Repositories Contributed To

8 repos

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

replicatedhq/embedded-cluster

Oct 2024 Oct 2025
13 Months active

Languages Used

GoYAMLBashMakefileShellshellyamlbash

Technical Skills

CI/CDDevOpsGo DevelopmentKubernetesSystem AdministrationAPI Integration

replicatedhq/kots

Oct 2024 Oct 2025
13 Months active

Languages Used

GoJavaScriptTypeScriptYAMLDockerfileShellgots

Technical Skills

Backend DevelopmentCLI DevelopmentGoKubernetesAPI IntegrationError Handling

replicatedhq/kURL

Nov 2024 Sep 2025
6 Months active

Languages Used

GoShellYAMLbashyamlDockerfileMakefileJavaScript

Technical Skills

CI/CDCloud InfrastructureDependency ManagementDevOpsGitHub ActionsGo

k0sproject/k0s

Nov 2024 Jul 2025
4 Months active

Languages Used

Go

Technical Skills

API DevelopmentBackend DevelopmentCLI DevelopmentCloud InfrastructureCommand-line InterfaceDevOps

replicatedhq/troubleshoot

Feb 2025 Sep 2025
5 Months active

Languages Used

Go

Technical Skills

CI/CDCommand Line Interface (CLI) InteractionContainerizationDebuggingError HandlingFile System Operations

replicatedhq/kurl.sh

Aug 2025 Aug 2025
1 Month active

Languages Used

JavaScriptYAML

Technical Skills

CI/CDCode CleanupDependency ManagementDevOpsGatsbyGitHub Actions

replicatedhq/replicated

Apr 2025 Apr 2025
1 Month active

Languages Used

Go

Technical Skills

API DesignAPI DevelopmentBackend DevelopmentCLI DevelopmentRefactoring

replicatedhq/replicated-docs

Jul 2025 Jul 2025
1 Month active

Languages Used

YAML

Technical Skills

CI/CDDocumentation

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