OpenNMS/opennms
Dec 2024 – Jan 2026
14 Months active
Languages Used
propertiesadocShellJSPJavaScriptJavaXMLAsciiDoc
Technical Skills
Configuration ManagementSystem AdministrationSystem MonitoringDocumentationConfigurationDatabase Monitoring
Dino
PROFILE
Dino
Over 14 months, David Yancey contributed to the OpenNMS/opennms repository by building and refining monitoring, configuration, and documentation features that improved system reliability and operator experience. He developed backend enhancements such as Oracle JDBC data collection, expression threshold labeling, and Scriptd regex matching, using Java, Beanshell scripting, and XML configuration. David also addressed deployment and packaging challenges on Debian and SELinux, and improved observability through metrics collection and logging. His work included comprehensive documentation updates, test automation, and targeted bug fixes, demonstrating depth in backend development, system administration, and documentation management while consistently aligning technical solutions with operational needs.
Overall Statistics
Feature vs Bugs
69%Features
Repository Contributions
41Total
Bugs
9
Commits
41
Features
20
Lines of code
22,884
Activity Months14
Your Network
28 peopleSame Organization
@opennms.com2
Shared Repositories
26
Atif AliMember
aurangzebMember
Atlassian BambooMember
Chandra GorantlaMember
Chandra GorantlaMember
Christian PapeMember
CI/CD SystemMember
DinoMember
David SchlenkMember
Work History
January 2026
2 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary focusing on delivering reliable monitoring features and improving developer/docs for OpenNMS. Highlights include a targeted enhancement to MailTransportMonitor to ensure unique test messages per node, a SnmpMonitor documentation upgrade with regex examples for multi-value monitoring and local routes, and the associated commits that enabled these improvements. Business value includes fewer flaky tests, easier onboarding, and clearer guidance for operators across multi-node environments.
2 Commits • 2 Features
Jan 1, 2026January 2026 monthly summary focusing on delivering reliable monitoring features and improving developer/docs for OpenNMS. Highlights include a targeted enhancement to MailTransportMonitor to ensure unique test messages per node, a SnmpMonitor documentation upgrade with regex examples for multi-value monitoring and local routes, and the associated commits that enabled these improvements. Business value includes fewer flaky tests, easier onboarding, and clearer guidance for operators across multi-node environments.
January 2026
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 — OpenNMS/opennms: Focused on delivering user-facing feature improvements, ensuring data accuracy, and improving deployment reliability. Key outcomes include Scriptd enhancements with regex-based vboid matching and thorough documentation; a fix to ensure UEI is correctly derived from event data in resolvable fields; and Debian packaging refinements to streamline installation and exclude unnecessary files. These changes deliver measurable business value by enabling more flexible scripting, improving event quality, and simplifying deployment.
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 — OpenNMS/opennms: Focused on delivering user-facing feature improvements, ensuring data accuracy, and improving deployment reliability. Key outcomes include Scriptd enhancements with regex-based vboid matching and thorough documentation; a fix to ensure UEI is correctly derived from event data in resolvable fields; and Debian packaging refinements to streamline installation and exclude unnecessary files. These changes deliver measurable business value by enabling more flexible scripting, improving event quality, and simplifying deployment.
November 2025
2 Commits • 2 Features
Nov 1, 2025Month: 2025-11 — OpenNMS/opennms: Delivered reliability and deployment enhancements focused on SSL monitoring and SELinux support. No major bugs fixed in this period. The changes improve monitoring accuracy for TLS scenarios and enable Minion deployments in SELinux-restricted environments, strengthening operational resilience and deployment flexibility.
2 Commits • 2 Features
Nov 1, 2025Month: 2025-11 — OpenNMS/opennms: Delivered reliability and deployment enhancements focused on SSL monitoring and SELinux support. No major bugs fixed in this period. The changes improve monitoring accuracy for TLS scenarios and enable Minion deployments in SELinux-restricted environments, strengthening operational resilience and deployment flexibility.
November 2025
October 2025
4 Commits • 2 Features
Oct 1, 2025October 2025 highlights OpenNMS/opennms improvements in observability, reliability, and monitoring accuracy. Delivered API logging enhancements for better traceability, expanded Minion tuning guidance, and safety improvements for installation scripting, along with a guard to prevent empty Prometheus labels. These efforts reduce noise, improve operational efficiency, and strengthen data quality for capacity planning and incident response.
October 2025
4 Commits • 2 Features
Oct 1, 2025October 2025 highlights OpenNMS/opennms improvements in observability, reliability, and monitoring accuracy. Delivered API logging enhancements for better traceability, expanded Minion tuning guidance, and safety improvements for installation scripting, along with a guard to prevent empty Prometheus labels. These efforts reduce noise, improve operational efficiency, and strengthen data quality for capacity planning and incident response.
September 2025
1 Commits • 1 Features
Sep 1, 2025Sept 2025 (OpenNMS/opennms): Documentation-only deprecation of the Situation Feedback feature. Removed all references in user docs, updated navigation to reflect non-support status, and linked changes to commit adbea24790cbed1bcc4961baba2005b8302cd7fe (Remove references to situation feedback, #7945). No code logic modifications were required, preserving stability while aligning with the product roadmap and reducing long-term maintenance.
1 Commits • 1 Features
Sep 1, 2025Sept 2025 (OpenNMS/opennms): Documentation-only deprecation of the Situation Feedback feature. Removed all references in user docs, updated navigation to reflect non-support status, and linked changes to commit adbea24790cbed1bcc4961baba2005b8302cd7fe (Remove references to situation feedback, #7945). No code logic modifications were required, preserving stability while aligning with the product roadmap and reducing long-term maintenance.
September 2025
August 2025
8 Commits • 2 Features
Aug 1, 2025OpenNMS monthly summary for 2025-08: Focused on documentation quality, data model improvements for timeseries, and cleanup of deprecated integrations, complemented by test stabilization. Delivered comprehensive docs work, enriched metrics with category tagging, and removal of legacy components, driving developer productivity and system reliability.
August 2025
8 Commits • 2 Features
Aug 1, 2025OpenNMS monthly summary for 2025-08: Focused on documentation quality, data model improvements for timeseries, and cleanup of deprecated integrations, complemented by test stabilization. Delivered comprehensive docs work, enriched metrics with category tagging, and removal of legacy components, driving developer productivity and system reliability.
July 2025
6 Commits • 1 Features
Jul 1, 2025July 2025: OpenNMS/opennms delivered focused documentation enhancements and a critical IP address discovery fix. The documentation improvements consolidated guidance across REST health endpoints, Minion JDBC installation, KSC endpoint, sFlow references, and housekeeping docs, improving user guidance and reducing support load. A bug fix improved IP address discovery accuracy by refining interface index handling and vendor-specific starting index calculations, addressing NMS-18051 and reducing misparsing of IP data. Collectively, these efforts enhanced user onboarding, operational reliability, and maintainability of the platform.
6 Commits • 1 Features
Jul 1, 2025July 2025: OpenNMS/opennms delivered focused documentation enhancements and a critical IP address discovery fix. The documentation improvements consolidated guidance across REST health endpoints, Minion JDBC installation, KSC endpoint, sFlow references, and housekeeping docs, improving user guidance and reducing support load. A bug fix improved IP address discovery accuracy by refining interface index handling and vendor-specific starting index calculations, addressing NMS-18051 and reducing misparsing of IP data. Collectively, these efforts enhanced user onboarding, operational reliability, and maintainability of the platform.
July 2025
June 2025
2 Commits • 2 Features
Jun 1, 2025June 2025 (OpenNMS/opennms) delivered two feature-driven improvements focused on alarm readability and system observability, with accompanying documentation and UI refinements. The work enhances operator clarity, enables data-driven usage reporting, and improves triage efficiency.
June 2025
2 Commits • 2 Features
Jun 1, 2025June 2025 (OpenNMS/opennms) delivered two feature-driven improvements focused on alarm readability and system observability, with accompanying documentation and UI refinements. The work enhances operator clarity, enables data-driven usage reporting, and improves triage efficiency.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on business value and technical achievements for OpenNMS/opennms. Core emphasis on documentation quality that reduces misconfiguration, improves onboarding, and lowers support workload.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary focusing on business value and technical achievements for OpenNMS/opennms. Core emphasis on documentation quality that reduces misconfiguration, improves onboarding, and lowers support workload.
May 2025
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025 — Focused on documentation-driven improvements for OpenNMS/opennms. Delivered consolidated guidance across IcmpMonitor metrics, TFTP port configuration, and R-core installation docs, enhancing operator clarity, easing onboarding, and reducing configuration errors. The work was executed via three commits linked to Jira issues NMS-17855, NMS-17856, and NMS-17755, with particular emphasis on removing obsolete notes and tightening guidance around network and monitoring configurations. No runtime code changes were introduced this month.
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025 — Focused on documentation-driven improvements for OpenNMS/opennms. Delivered consolidated guidance across IcmpMonitor metrics, TFTP port configuration, and R-core installation docs, enhancing operator clarity, easing onboarding, and reducing configuration errors. The work was executed via three commits linked to Jira issues NMS-17855, NMS-17856, and NMS-17755, with particular emphasis on removing obsolete notes and tightening guidance around network and monitoring configurations. No runtime code changes were introduced this month.
March 2025
1 Commits
Mar 1, 2025March 2025: Stabilized Newsfeed behavior in OpenNMS/opennms by standardizing the Newsfeed URL to api/v2/newsfeed and removing the system property override. This improves reliability across environments, reduces troubleshooting effort, and simplifies future maintenance through a clearly scoped, low-risk change.
1 Commits
Mar 1, 2025March 2025: Stabilized Newsfeed behavior in OpenNMS/opennms by standardizing the Newsfeed URL to api/v2/newsfeed and removing the system property override. This improves reliability across environments, reduces troubleshooting effort, and simplifies future maintenance through a clearly scoped, low-risk change.
March 2025
February 2025
3 Commits • 3 Features
Feb 1, 2025February 2025 performance summary for OpenNMS/opennms: Focused on delivering observability enhancements and troubleshooting tooling to increase uptime and data quality. Key features delivered include: Oracle JDBC Data Collection Reports providing tablespace size, invalid objects, backup lag, and redo generation metrics to improve Oracle DB monitoring; Graph data reliability improvement by configuring page-size in the datastax-java-driver to prevent data gaps when collection or polling intervals change; OpenNMS diagnostic support_pack.sh script to collect Java, OS, package versions, database statistics, thread dumps, configuration files, and logs into a compressed archive for easier troubleshooting, with support across multiple assembly locations. These changes enable proactive capacity planning, faster MTTR, and more reliable graph analytics across the platform. Technologies demonstrated include Oracle JDBC data collection, Newts/Datastax driver configuration, shell scripting, and cross-assembly tooling.
February 2025
3 Commits • 3 Features
Feb 1, 2025February 2025 performance summary for OpenNMS/opennms: Focused on delivering observability enhancements and troubleshooting tooling to increase uptime and data quality. Key features delivered include: Oracle JDBC Data Collection Reports providing tablespace size, invalid objects, backup lag, and redo generation metrics to improve Oracle DB monitoring; Graph data reliability improvement by configuring page-size in the datastax-java-driver to prevent data gaps when collection or polling intervals change; OpenNMS diagnostic support_pack.sh script to collect Java, OS, package versions, database statistics, thread dumps, configuration files, and logs into a compressed archive for easier troubleshooting, with support across multiple assembly locations. These changes enable proactive capacity planning, faster MTTR, and more reliable graph analytics across the platform. Technologies demonstrated include Oracle JDBC data collection, Newts/Datastax driver configuration, shell scripting, and cross-assembly tooling.
January 2025
2 Commits • 2 Features
Jan 1, 2025January 2025 – Documentation improvements for deployment and configuration across OpenNMS OpenNMS/opennms: - Newts setup and verification documentation updated to guide end-to-end Newts deployment, including database properties, retention rates, Cassandra driver settings, and schema initialization/verification within OpenNMS. (Commit: 727f17bb8edd2274111ac8a04d2a75bf1043f049; NMS-16418) - Kafka configuration and system requirements documentation updated, clarifying security.protocol usage to SASL_SSL and updating OS/system requirements for newer RHEL/CentOS versions. (Commit: 20244ba18101d7cf8d970d779f6ca774b16ffec2; NMS-16940) No major code fixes this month; focus was on documentation to improve deployment accuracy, security alignment, and onboarding efficiency. Business value and impact: these docs reduce configuration drift, lower onboarding time for operators and developers, and decrease support tickets related to Newts and Kafka deployments. The updates also align with current supported platforms and security practices, contributing to more stable, auditable OpenNMS deployments. Technologies/skills demonstrated: OpenNMS stack (Newts, Cassandra integration), Kafka deployment considerations, Oracle/NoSQL-like Cassandra driver settings, Linux OS requirements (RHEL/CentOS), security protocol configuration, and documentation engineering.
2 Commits • 2 Features
Jan 1, 2025January 2025 – Documentation improvements for deployment and configuration across OpenNMS OpenNMS/opennms: - Newts setup and verification documentation updated to guide end-to-end Newts deployment, including database properties, retention rates, Cassandra driver settings, and schema initialization/verification within OpenNMS. (Commit: 727f17bb8edd2274111ac8a04d2a75bf1043f049; NMS-16418) - Kafka configuration and system requirements documentation updated, clarifying security.protocol usage to SASL_SSL and updating OS/system requirements for newer RHEL/CentOS versions. (Commit: 20244ba18101d7cf8d970d779f6ca774b16ffec2; NMS-16940) No major code fixes this month; focus was on documentation to improve deployment accuracy, security alignment, and onboarding efficiency. Business value and impact: these docs reduce configuration drift, lower onboarding time for operators and developers, and decrease support tickets related to Newts and Kafka deployments. The updates also align with current supported platforms and security practices, contributing to more stable, auditable OpenNMS deployments. Technologies/skills demonstrated: OpenNMS stack (Newts, Cassandra integration), Kafka deployment considerations, Oracle/NoSQL-like Cassandra driver settings, Linux OS requirements (RHEL/CentOS), security protocol configuration, and documentation engineering.
January 2025
December 2024
2 Commits
Dec 1, 2024December 2024 monthly summary for OpenNMS/opennms: Focused on correcting the WinRM Virtual Memory graph to ensure accurate Windows VM memory usage, with standardization of titles, removal of redundant files, and upgrade-safe configuration. This bug fix improves monitoring accuracy for capacity planning, reduces dashboard confusion, and strengthens deployment stability. Delivered through two commits addressing NMS-16953 and providing traceability. Technologies demonstrated include Windows metrics collection, monitoring graph design, configuration management, and Git-based collaboration (commits 71e94267600a9b0e64561519a7c11ab6ff3ed068 and 93a244003d00e194bf25f6d0d48f3f95e37da515).
December 2024
2 Commits
Dec 1, 2024December 2024 monthly summary for OpenNMS/opennms: Focused on correcting the WinRM Virtual Memory graph to ensure accurate Windows VM memory usage, with standardization of titles, removal of redundant files, and upgrade-safe configuration. This bug fix improves monitoring accuracy for capacity planning, reduces dashboard confusion, and strengthens deployment stability. Delivered through two commits addressing NMS-16953 and providing traceability. Technologies demonstrated include Windows metrics collection, monitoring graph design, configuration management, and Git-based collaboration (commits 71e94267600a9b0e64561519a7c11ab6ff3ed068 and 93a244003d00e194bf25f6d0d48f3f95e37da515).
Activity
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Quality Metrics
Correctness94.2%
Maintainability92.8%
Architecture89.8%
Performance90.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
AsciiDocAsciidocBeanshellJSPJavaJavaScriptMakefileMarkdownPropertiesShell
Technical Skills
API DevelopmentBackend DevelopmentBeanshell scriptingCode RefactoringConfigurationConfiguration ManagementData TaggingDatabase ManagementDatabase MonitoringDebianDeprecationDocumentationDocumentation ManagementFront End DevelopmentFrontend Development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline