psleng/vyos-1x
Nov 2024 – Jan 2026
15 Months active
Languages Used
Jinja2PythonXMLYAMLShellpythonxmlVyOS configuration language
Technical Skills
Backend DevelopmentDHCPDHCP Server ManagementDevOpsIPoENetwork Configuration
Viacheslav Hletenko
PROFILE
Viacheslav Hletenko
Vladimir Gletenko developed and maintained core networking and automation features for the psleng/vyos-1x repository, focusing on robust system configuration, test automation, and platform compatibility. He engineered solutions for VPP integration, VPN observability, and kernel module management, using Python, XML, and Bash to automate deployments and streamline CI/CD pipelines. His work addressed complex networking scenarios, such as dynamic interface validation and NAT smoketests, while improving security through configuration hardening and log management. By expanding test coverage and refining systemd and Nginx integration, Vladimir delivered maintainable, reliable code that enhanced deployment flexibility and reduced operational risk across diverse environments.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
85Total
Bugs
31
Commits
85
Features
41
Lines of code
10,314
Activity Months15
Your Network
97 peopleSame Organization
@vyos.io9
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88
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Adam SchultzMember
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Work History
January 2026
4 Commits • 2 Features
Jan 1, 2026January 2026 (psleng/vyos-1x) focused on stability, security hardening, and NIC compatibility. Delivered features to broaden hardware support, fixed critical stability issues, and improved data robustness across platforms, translating to lower support costs and more reliable deployments. Key contributions include enhancements to NIC compatibility, security hardening, and resilience of CPU data reporting across environments.
4 Commits • 2 Features
Jan 1, 2026January 2026 (psleng/vyos-1x) focused on stability, security hardening, and NIC compatibility. Delivered features to broaden hardware support, fixed critical stability issues, and improved data robustness across platforms, translating to lower support costs and more reliable deployments. Key contributions include enhancements to NIC compatibility, security hardening, and resilience of CPU data reporting across environments.
January 2026
December 2025
3 Commits • 2 Features
Dec 1, 2025December 2025 (Month: 2025-12) delivered three prioritized features and fixes in psleng/vyos-1x, focusing on reliability, validation, and visibility. Key outcomes include reduced log noise in systemd journal, introduced smoketests to validate kernel/kexec and arm64 configurations, and expanded BMP monitoring with local RIB visibility for IPv4 and IPv6.
December 2025
3 Commits • 2 Features
Dec 1, 2025December 2025 (Month: 2025-12) delivered three prioritized features and fixes in psleng/vyos-1x, focusing on reliability, validation, and visibility. Key outcomes include reduced log noise in systemd journal, introduced smoketests to validate kernel/kexec and arm64 configurations, and expanded BMP monitoring with local RIB visibility for IPv4 and IPv6.
November 2025
4 Commits • 2 Features
Nov 1, 20252025-11 monthly summary for psleng/vyos-1x: Delivered key feature enhancements for VPP telemetry and service management, expanded automation capabilities with a non-sudo API access user, and resolved a critical driver override bug. These efforts improved observability, reliability, and security, delivering measurable business value through better monitoring, faster startup, and safer configuration changes.
4 Commits • 2 Features
Nov 1, 20252025-11 monthly summary for psleng/vyos-1x: Delivered key feature enhancements for VPP telemetry and service management, expanded automation capabilities with a non-sudo API access user, and resolved a critical driver override bug. These efforts improved observability, reliability, and security, delivering measurable business value through better monitoring, faster startup, and safer configuration changes.
November 2025
October 2025
2 Commits
Oct 1, 2025Month 2025-10: Focused on stabilizing VPP-based networking test coverage and hardening driver detection for VyOS 1x. Re-enabled critical CLI smoketests, and improved robustness when hardware information is incomplete, enhancing CI reliability and runtime stability.
October 2025
2 Commits
Oct 1, 2025Month 2025-10: Focused on stabilizing VPP-based networking test coverage and hardening driver detection for VyOS 1x. Re-enabled critical CLI smoketests, and improved robustness when hardware information is incomplete, enhancing CI reliability and runtime stability.
September 2025
4 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09 – psleng/vyos-1x. Focused on delivering cross-architecture deployment readiness, stabilizing runtime behavior after dynamic topology changes, and improving platform compatibility. Key work included architecture-agnostic upgrade of VPP startup configurations, fixes to interface state handling after bridge detachment, and robust handling of missing CPU vendor information.
4 Commits • 1 Features
Sep 1, 2025Monthly summary for 2025-09 – psleng/vyos-1x. Focused on delivering cross-architecture deployment readiness, stabilizing runtime behavior after dynamic topology changes, and improving platform compatibility. Key work included architecture-agnostic upgrade of VPP startup configurations, fixes to interface state handling after bridge detachment, and robust handling of missing CPU vendor information.
September 2025
August 2025
6 Commits • 3 Features
Aug 1, 2025August 2025 deliverables for psleng/vyos-1x include code quality cleanup in VPP-related Python modules, VPP smoketest CI integration, dynamic VFIO module management for VPP with DPDK, and migration to accel-ppp-ng to ensure PPPoE server compatibility and overall VPP readiness.
August 2025
6 Commits • 3 Features
Aug 1, 2025August 2025 deliverables for psleng/vyos-1x include code quality cleanup in VPP-related Python modules, VPP smoketest CI integration, dynamic VFIO module management for VPP with DPDK, and migration to accel-ppp-ng to ensure PPPoE server compatibility and overall VPP readiness.
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for psleng/vyos-1x: delivered reliability improvements in monitoring and CI, expanded image installer kernel option capabilities, and reorganized SFlow configuration to enhance maintainability and deployment clarity. These changes improve system stability, upgrade flexibility, and CI accuracy, contributing to faster recovery, lower risk upgrades, and clearer configuration management.
5 Commits • 2 Features
Jul 1, 2025July 2025 monthly summary for psleng/vyos-1x: delivered reliability improvements in monitoring and CI, expanded image installer kernel option capabilities, and reorganized SFlow configuration to enhance maintainability and deployment clarity. These changes improve system stability, upgrade flexibility, and CI accuracy, contributing to faster recovery, lower risk upgrades, and clearer configuration management.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly review for psleng/vyos-1x: Delivered expanded VPP smoketests for NAT44 and CGNAT, and fixed QoS smoketest interpretation to align with tc output, improving CI reliability and validation coverage.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly review for psleng/vyos-1x: Delivered expanded VPP smoketests for NAT44 and CGNAT, and fixed QoS smoketest interpretation to align with tc output, improving CI reliability and validation coverage.
May 2025
2 Commits
May 1, 2025May 2025: Focused bug fixes in psleng/vyos-1x to improve network traffic filtering reliability and configuration usability. Delivered two critical fixes that directly enhance security posture and operator experience. 1) Nftables conntrack ignore rules now enclose multi-port dport values in curly braces, ensuring accurate traffic filtering across multi-port scenarios (commit ea6eff90407043e1d64a0cd5424ec6e44b04b1d4; T7414). 2) HAProxy config guidance corrected: clarified that a path is expected (not a URL) and improved help text and error messages to prevent misconfigurations (commit 7b47ce030cca8adb56dcf3fdfc96dab7ab0ed950; T7335). These changes reduce misconfigurations, improve security posture, and streamline operations for the vyos-1x product line.
2 Commits
May 1, 2025May 2025: Focused bug fixes in psleng/vyos-1x to improve network traffic filtering reliability and configuration usability. Delivered two critical fixes that directly enhance security posture and operator experience. 1) Nftables conntrack ignore rules now enclose multi-port dport values in curly braces, ensuring accurate traffic filtering across multi-port scenarios (commit ea6eff90407043e1d64a0cd5424ec6e44b04b1d4; T7414). 2) HAProxy config guidance corrected: clarified that a path is expected (not a URL) and improved help text and error messages to prevent misconfigurations (commit 7b47ce030cca8adb56dcf3fdfc96dab7ab0ed950; T7335). These changes reduce misconfigurations, improve security posture, and streamline operations for the vyos-1x product line.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for psleng/vyos-1x: Implemented IPsec Logging Configuration for VyOS by adding a new IPsec logging configuration file and a Jinja2 template to render the log level for strongSwan. This ensures the configured log level is correctly applied to the systemd journal logger. Included a targeted fix to VPN IPsec log level processing (T7290). Business impact: improved VPN observability and faster troubleshooting, with consistent log behavior across deployments.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for psleng/vyos-1x: Implemented IPsec Logging Configuration for VyOS by adding a new IPsec logging configuration file and a Jinja2 template to render the log level for strongSwan. This ensures the configured log level is correctly applied to the systemd journal logger. Included a targeted fix to VPN IPsec log level processing (T7290). Business impact: improved VPN observability and faster troubleshooting, with consistent log behavior across deployments.
March 2025
1 Commits
Mar 1, 2025March 2025 (psleng/vyos-1x): Delivered an interface name validation enhancement for VPP kernel interfaces by extending the interface name constraint validator to recognize vpptun and vpptap. This ensures vpptun/vpptap interfaces are valid and usable in configurations, addressing setup failures during initial provisioning and improving interoperability with OSPF deployments. The change is tracked under T7252 with commit f8bc27991374c7fa013dac56fef2ff8c1379d69a, delivering a consistent, reliable configuration experience for VPP-backed deployments. Business value: reduces provisioning friction, improves interoperability with VPP interfaces, and enhances system reliability during initial deployments.
1 Commits
Mar 1, 2025March 2025 (psleng/vyos-1x): Delivered an interface name validation enhancement for VPP kernel interfaces by extending the interface name constraint validator to recognize vpptun and vpptap. This ensures vpptun/vpptap interfaces are valid and usable in configurations, addressing setup failures during initial provisioning and improving interoperability with OSPF deployments. The change is tracked under T7252 with commit f8bc27991374c7fa013dac56fef2ff8c1379d69a, delivering a consistent, reliable configuration experience for VPP-backed deployments. Business value: reduces provisioning friction, improves interoperability with VPP interfaces, and enhances system reliability during initial deployments.
March 2025
February 2025
9 Commits • 4 Features
Feb 1, 2025February 2025 (2025-02) monthly summary for psleng/vyos-1x: Focused on stabilizing CI, expanding smoketest coverage, and standardizing configurations to reduce risk and speed delivery. Delivered baseline VPP smoketest configurations, an IPsec XFRM Netlink smoketest, bridge-domain loopback (BVI) testing, and IPv6 naming standardization, while addressing key CI/test reliability issues. These efforts improved CI green-rate, broadened end-to-end testing for critical networking features, and established repeatable configurations across VPP components, enabling faster iteration and lower production risk.
February 2025
9 Commits • 4 Features
Feb 1, 2025February 2025 (2025-02) monthly summary for psleng/vyos-1x: Focused on stabilizing CI, expanding smoketest coverage, and standardizing configurations to reduce risk and speed delivery. Delivered baseline VPP smoketest configurations, an IPsec XFRM Netlink smoketest, bridge-domain loopback (BVI) testing, and IPv6 naming standardization, while addressing key CI/test reliability issues. These efforts improved CI green-rate, broadened end-to-end testing for critical networking features, and established repeatable configurations across VPP components, enabling faster iteration and lower production risk.
January 2025
35 Commits • 19 Features
Jan 1, 2025January 2025 monthly summary for psleng/vyos-1x focusing on delivering automation, CLI tooling, and stability improvements that drive business value and maintainability. Key features delivered: - CI automation: Added GitHub Actions trigger build and Python linting with ruff to ensure code quality and faster feedback for PRs. - CLI and module expansion: Delivered Vyos-VPP CLI and Python3 modules; XML CLI for configuration and operational mode to better support automation and integrations. - XML tooling enhancements and build hygiene: Added XML CLI commands for disable and interface descriptions; moved and guarded component version storage (conflict-components or dynamic) to improve maintainability; introduced patch controls to skip unneeded unittest during XML builds. - Network feature delivery: Implemented GRE tunnel types (erspan, l3, teb) with multipoint support; added VXLAN kernel_add examples; enabled LCP routing improvements including default route-no-paths. - Quality and maintainability improvements: Added CODEOWNERS for ownership policies; reorganized CODEOWNERS into the github directory; cleaned up legacy patches and improved VPP control path resilience (lcp_nl_resync). Major bugs fixed: - Cleanups and patch hygiene: Deleted vyos-1x component version patch and removed conflicting components; fixed removal of LCP kernel-interfaces to prevent stale references; reverted a delay introduced between add() and kernel_add() to restore expected timing. - Stability and correctness: Moved VPPContron initialization to interface init path; removed recursive_defaults from get_config arg; fixed Smoketests to delete bonding before verification of bond deletion. - Control and test reliability: Switched VPP control to use lcp_nl_resync for resync behavior; ensured smoketests cover bonding state without VLANs. Overall impact and accomplishments: - Accelerated development cycles with automated checks, reducing regression risk and improving release confidence. - Broadened automation and tooling support (XML-based tooling, VPP integration) enabling easier orchestration and configuration management. - Strengthened network feature coverage (GRE, VXLAN, bonding) and routing controls, contributing to more robust, scalable deployments. Technologies/skills demonstrated: - Python, XML tooling, and Python3 modules development; CI/CD with GitHub Actions and Python linting (ruff). - Networking features: GRE, VXLAN, LCP routing, bonding, and VPP integration patterns; VPPControl usage. - Code quality and project hygiene: CODEOWNERS, patch lifecycle management, and ownership governance.
35 Commits • 19 Features
Jan 1, 2025January 2025 monthly summary for psleng/vyos-1x focusing on delivering automation, CLI tooling, and stability improvements that drive business value and maintainability. Key features delivered: - CI automation: Added GitHub Actions trigger build and Python linting with ruff to ensure code quality and faster feedback for PRs. - CLI and module expansion: Delivered Vyos-VPP CLI and Python3 modules; XML CLI for configuration and operational mode to better support automation and integrations. - XML tooling enhancements and build hygiene: Added XML CLI commands for disable and interface descriptions; moved and guarded component version storage (conflict-components or dynamic) to improve maintainability; introduced patch controls to skip unneeded unittest during XML builds. - Network feature delivery: Implemented GRE tunnel types (erspan, l3, teb) with multipoint support; added VXLAN kernel_add examples; enabled LCP routing improvements including default route-no-paths. - Quality and maintainability improvements: Added CODEOWNERS for ownership policies; reorganized CODEOWNERS into the github directory; cleaned up legacy patches and improved VPP control path resilience (lcp_nl_resync). Major bugs fixed: - Cleanups and patch hygiene: Deleted vyos-1x component version patch and removed conflicting components; fixed removal of LCP kernel-interfaces to prevent stale references; reverted a delay introduced between add() and kernel_add() to restore expected timing. - Stability and correctness: Moved VPPContron initialization to interface init path; removed recursive_defaults from get_config arg; fixed Smoketests to delete bonding before verification of bond deletion. - Control and test reliability: Switched VPP control to use lcp_nl_resync for resync behavior; ensured smoketests cover bonding state without VLANs. Overall impact and accomplishments: - Accelerated development cycles with automated checks, reducing regression risk and improving release confidence. - Broadened automation and tooling support (XML-based tooling, VPP integration) enabling easier orchestration and configuration management. - Strengthened network feature coverage (GRE, VXLAN, bonding) and routing controls, contributing to more robust, scalable deployments. Technologies/skills demonstrated: - Python, XML tooling, and Python3 modules development; CI/CD with GitHub Actions and Python linting (ruff). - Networking features: GRE, VXLAN, LCP routing, bonding, and VPP integration patterns; VPPControl usage. - Code quality and project hygiene: CODEOWNERS, patch lifecycle management, and ownership governance.
January 2025
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024 focused on delivering scalable networking enhancements, hardening the CI workflow, and expanding PPPoE deployment options in psleng/vyos-1x. The work improves traffic distribution on high-core-count systems, strengthens test reliability by ensuring install sources are aligned with Debian security advisories, and adds flexible PPPoE listen behavior across base interfaces and VLANs.
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024 focused on delivering scalable networking enhancements, hardening the CI workflow, and expanding PPPoE deployment options in psleng/vyos-1x. The work improves traffic distribution on high-core-count systems, strengthens test reliability by ensuring install sources are aligned with Debian security advisories, and adds flexible PPPoE listen behavior across base interfaces and VLANs.
November 2024
4 Commits • 2 Features
Nov 1, 2024In November 2024, psleng/vyos-1x delivered two feature enhancements and fixed key reliability issues, emphasizing business value through improved startup resilience, robust NIC handling, and expanded configuration capabilities.
4 Commits • 2 Features
Nov 1, 2024In November 2024, psleng/vyos-1x delivered two feature enhancements and fixed key reliability issues, emphasizing business value through improved startup resilience, robust NIC handling, and expanded configuration capabilities.
November 2024
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Quality Metrics
Correctness90.0%
Maintainability91.0%
Architecture85.2%
Performance84.4%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashJSONJinjaJinja2NginxPythonShellVyOS configuration languageXMLYAML
Technical Skills
API IntegrationAPI integrationAutomationBGPBVIBackend DevelopmentBondingBridge DomainsBridgingBug FixingBuild EngineeringBuild System ManagementBuild SystemsCGNATCI/CD
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline