aws/amazon-ssm-agent
Aug 2024 – Feb 2026
17 Months active
Languages Used
GoMarkdownBatchfilePowerShellShellDockerfileJSONbash
Technical Skills
Gobackend developmentnetwork programmingsystem programmingconcurrent programmingtesting
Rocky Li
PROFILE
Rocky Li
Ziyli worked extensively on the aws/amazon-ssm-agent repository, delivering features and fixes that improved reliability, security, and operational efficiency. Over 17 months, Ziyli engineered solutions such as patch execution persistence across reboots, telemetry logging enhancements, and robust file permission hardening. Using Go and shell scripting, Ziyli refactored network and system programming components to optimize performance and reduce resource leaks, while also modernizing Windows installer flows with PowerShell. The work demonstrated depth in backend development, cross-platform automation, and security best practices, consistently addressing real-world deployment challenges and ensuring the agent’s stability and maintainability across diverse cloud and on-premises environments.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
45Total
Bugs
10
Commits
45
Features
25
Lines of code
3,348
Activity Months17
Your Network
1513 peopleShared Repositories
27
Work History
February 2026
4 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for aws/amazon-ssm-agent. Focus was on documentation clarity, reliability, and secure image provisioning. Delivered key features and enhancements including documentation updates for CommandWorkerBufferLimit, configuration docs, and updated release notes; implemented a read-only version check to prevent unnecessary installs/uninstalls in environments with locked package managers, reducing service disruptions; updated Docker images to include latest system packages via yum update for security and stability. These efforts improved user experience, reduced operational risk, and strengthened deployment reliability across ecosystems.
4 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for aws/amazon-ssm-agent. Focus was on documentation clarity, reliability, and secure image provisioning. Delivered key features and enhancements including documentation updates for CommandWorkerBufferLimit, configuration docs, and updated release notes; implemented a read-only version check to prevent unnecessary installs/uninstalls in environments with locked package managers, reducing service disruptions; updated Docker images to include latest system packages via yum update for security and stability. These efforts improved user experience, reduced operational risk, and strengthened deployment reliability across ecosystems.
February 2026
January 2026
1 Commits
Jan 1, 2026January 2026: Focused on reliability improvements in the UII API IP detection within aws/amazon-ssm-agent. Implemented input validation to prevent empty IP strings from causing UII API failures and added clear error messaging when no IP address is found, enhancing stability and observability for IP-based workflows.
January 2026
1 Commits
Jan 1, 2026January 2026: Focused on reliability improvements in the UII API IP detection within aws/amazon-ssm-agent. Implemented input validation to prevent empty IP strings from causing UII API failures and added clear error messaging when no IP address is found, enhancing stability and observability for IP-based workflows.
December 2025
2 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Key features delivered: Patch execution persistence across reboots in AWS SSM Agent, enabling patch management to preserve state of patch documents and continue execution after restart, including handling patches not registered to SSM Agent. Major bugs fixed: None reported this month. Overall impact and accomplishments: This work improves reliability and reduces manual intervention by ensuring patch workflows survive reboots, enhancing security and compliance in customer environments. Release notes updated to reflect changes. Technologies/skills demonstrated: Stateful patch management workflows, cross-reboot coordination, handling patches from unregistered sources, and documentation updates.
2 Commits • 1 Features
Dec 1, 2025Month: 2025-12 — Key features delivered: Patch execution persistence across reboots in AWS SSM Agent, enabling patch management to preserve state of patch documents and continue execution after restart, including handling patches not registered to SSM Agent. Major bugs fixed: None reported this month. Overall impact and accomplishments: This work improves reliability and reduces manual intervention by ensuring patch workflows survive reboots, enhancing security and compliance in customer environments. Release notes updated to reflect changes. Technologies/skills demonstrated: Stateful patch management workflows, cross-reboot coordination, handling patches from unregistered sources, and documentation updates.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025: Delivered SSM Agent Enhancements including environment variable handling, retry mechanisms, improved logging, and new cloud endpoint support. Release notes updated (CR-240060088). This work improves reliability, observability, and cloud compatibility for customers, with clear documentation and faster deployment.
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025: Delivered SSM Agent Enhancements including environment variable handling, retry mechanisms, improved logging, and new cloud endpoint support. Release notes updated (CR-240060088). This work improves reliability, observability, and cloud compatibility for customers, with clear documentation and faster deployment.
October 2025
2 Commits • 2 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on aws/amazon-ssm-agent: delivered performance improvements for IP address retrieval and initial IPv6 support, mitigating CPU utilization issues on multi-NIC hosts. Updated release notes with CR references. Achieved improved scalability for NIC-rich environments and IPv6 readiness, highlighting proficiency in refactoring, network handling, and release engineering.
2 Commits • 2 Features
Oct 1, 2025Monthly summary for 2025-10 focusing on aws/amazon-ssm-agent: delivered performance improvements for IP address retrieval and initial IPv6 support, mitigating CPU utilization issues on multi-NIC hosts. Updated release notes with CR references. Achieved improved scalability for NIC-rich environments and IPv6 readiness, highlighting proficiency in refactoring, network handling, and release engineering.
October 2025
August 2025
2 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for aws/amazon-ssm-agent focusing on reliability and configurability improvements in EC2 interactions and the DownloadContent plugin. No explicit bug fixes documented in the provided data. Overall, these changes reduce operational risk, improve deployment readiness, and enhance plugin security posture.
August 2025
2 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for aws/amazon-ssm-agent focusing on reliability and configurability improvements in EC2 interactions and the DownloadContent plugin. No explicit bug fixes documented in the provided data. Overall, these changes reduce operational risk, improve deployment readiness, and enhance plugin security posture.
July 2025
3 Commits • 3 Features
Jul 1, 2025July 2025 monthly highlights for aws/amazon-ssm-agent focused on security hardening, configurability, and test robustness. Delivered three key capabilities, fixed a macOS credential refresher test issue, and reinforced the agent's reliability and observability for production deployments.
3 Commits • 3 Features
Jul 1, 2025July 2025 monthly highlights for aws/amazon-ssm-agent focused on security hardening, configurability, and test robustness. Delivered three key capabilities, fixed a macOS credential refresher test issue, and reinforced the agent's reliability and observability for production deployments.
July 2025
June 2025
4 Commits • 1 Features
Jun 1, 2025June 2025 monthly work summary for aws/amazon-ssm-agent focused on strengthening security posture, cross-platform reliability, and maintainability through consolidated hardening and rigorous testing. Key features delivered centered on System Security Hardening: File Permissions and Privileged Access Control, aligning file access controls, command execution restrictions, telemetry configuration, and platform-agnostic validation. No separate bug fixes were logged as major items this month; instead, security hardening work provided a proactive resilience enhancement with supporting tests. Impact: Reduced risk of unauthorized access and privilege escalation, improved telemetry data integrity, and easier audit/compliance. Cross-platform tests (Linux and Windows) increased confidence in behavior consistency across environments, supporting safer deployments and faster incident response. What was delivered, with traceability: - System Security Hardening: File Permissions and Privileged Access Control across the codebase and telemetry config - Enforced non-privileged CLI usage: explicit disallowance of running local CLI command utility as non-privileged user - Telemetry folder permissions hardened to 0700 with update/checks for ongoing enforcement - Cross-platform tests for file privilege checks (Linux and Windows) to ensure consistent behavior - Incremental commits documenting the changes: 6007829179f96d462f0b8a2e32f3c3ddc7bddcf7; cf9c9f991ec74ecf48ea8d21b50398ce90598e57; a18da484eba6db1eade61f8e64749e9b195df7f9; 7e1f69027491f1b6839be156d904ddbc56b811f0
June 2025
4 Commits • 1 Features
Jun 1, 2025June 2025 monthly work summary for aws/amazon-ssm-agent focused on strengthening security posture, cross-platform reliability, and maintainability through consolidated hardening and rigorous testing. Key features delivered centered on System Security Hardening: File Permissions and Privileged Access Control, aligning file access controls, command execution restrictions, telemetry configuration, and platform-agnostic validation. No separate bug fixes were logged as major items this month; instead, security hardening work provided a proactive resilience enhancement with supporting tests. Impact: Reduced risk of unauthorized access and privilege escalation, improved telemetry data integrity, and easier audit/compliance. Cross-platform tests (Linux and Windows) increased confidence in behavior consistency across environments, supporting safer deployments and faster incident response. What was delivered, with traceability: - System Security Hardening: File Permissions and Privileged Access Control across the codebase and telemetry config - Enforced non-privileged CLI usage: explicit disallowance of running local CLI command utility as non-privileged user - Telemetry folder permissions hardened to 0700 with update/checks for ongoing enforcement - Cross-platform tests for file privilege checks (Linux and Windows) to ensure consistent behavior - Incremental commits documenting the changes: 6007829179f96d462f0b8a2e32f3c3ddc7bddcf7; cf9c9f991ec74ecf48ea8d21b50398ce90598e57; a18da484eba6db1eade61f8e64749e9b195df7f9; 7e1f69027491f1b6839be156d904ddbc56b811f0
May 2025
3 Commits • 1 Features
May 1, 2025May 2025: Delivered key observability and stability enhancements for aws/amazon-ssm-agent. Implemented Telemetry Logging Capabilities by augmenting the logging framework with telemetry-specific log levels to improve monitoring and diagnostics; updated release notes to document the new feature. Fixed noisy logging by adjusting Dynamic Configuration Logging Severity—from error to warning when the dynamic config file is missing, reducing noise while ensuring default configuration is populated. Release notes updated accordingly to reflect these changes. These updates improve issue diagnosis, monitoring, and operator experience, delivering measurable business value in reliability and operational efficiency.
3 Commits • 1 Features
May 1, 2025May 2025: Delivered key observability and stability enhancements for aws/amazon-ssm-agent. Implemented Telemetry Logging Capabilities by augmenting the logging framework with telemetry-specific log levels to improve monitoring and diagnostics; updated release notes to document the new feature. Fixed noisy logging by adjusting Dynamic Configuration Logging Severity—from error to warning when the dynamic config file is missing, reducing noise while ensuring default configuration is populated. Release notes updated accordingly to reflect these changes. These updates improve issue diagnosis, monitoring, and operator experience, delivering measurable business value in reliability and operational efficiency.
May 2025
April 2025
3 Commits • 2 Features
Apr 1, 2025April 2025: The aws/amazon-ssm-agent team delivered three focused contributions that enhance performance, security, and reliability. Key changes include an ACL hardened data directory optimization to skip costly recursive hardening on reboot, a correction to the IMDS IPv6 address and port-forwarding deny rule to strengthen security and accuracy in metadata access, and an upgrade to diagnostics and port handling with hibernation logging and cross-platform retry logic for serial ports. These changes reduce reboot overhead, improve security posture, and increase observability across platforms.
April 2025
3 Commits • 2 Features
Apr 1, 2025April 2025: The aws/amazon-ssm-agent team delivered three focused contributions that enhance performance, security, and reliability. Key changes include an ACL hardened data directory optimization to skip costly recursive hardening on reboot, a correction to the IMDS IPv6 address and port-forwarding deny rule to strengthen security and accuracy in metadata access, and an upgrade to diagnostics and port handling with hibernation logging and cross-platform retry logic for serial ports. These changes reduce reboot overhead, improve security posture, and increase observability across platforms.
March 2025
1 Commits • 1 Features
Mar 1, 2025Monthly summary for 2025-03: Key deliverable in aws/amazon-ssm-agent focused on hibernation reliability. Introduced a configurable maximum backoff interval and refactored hibernation logic to fix ping leaks and ensure correct interval behavior, significantly improving reliability during low activity periods.
1 Commits • 1 Features
Mar 1, 2025Monthly summary for 2025-03: Key deliverable in aws/amazon-ssm-agent focused on hibernation reliability. Introduced a configurable maximum backoff interval and refactored hibernation logic to fix ping leaks and ensure correct interval behavior, significantly improving reliability during low activity periods.
March 2025
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 summary for aws/amazon-ssm-agent: Delivered reliability, security, and correctness improvements that translate into reduced operational incidents and stronger security posture. Key outcomes include: short log file naming with safeguards to prevent infinite upload loops; BuildSafePath to prevent path traversal across orchestration plugins; improved SSM Setup CLI integrity checks with clearer error feedback; default configuration fallback ensures OS name and agent version are correctly reported even without a config file. These changes improve resilience, security, and observability.
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 summary for aws/amazon-ssm-agent: Delivered reliability, security, and correctness improvements that translate into reduced operational incidents and stronger security posture. Key outcomes include: short log file naming with safeguards to prevent infinite upload loops; BuildSafePath to prevent path traversal across orchestration plugins; improved SSM Setup CLI integrity checks with clearer error feedback; default configuration fallback ensures OS name and agent version are correctly reported even without a config file. These changes improve resilience, security, and observability.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for aws/amazon-ssm-agent. Focus: installer experience improvements to accelerate Windows deployments and reduce friction in automated workflows. Delivered a feature that replaces the VBScript-based unzip with a PowerShell-based unzip in the installer flow, enabling a simplified, no-prompt installation process. This enhances automation readiness across CI/CD pipelines and improves reliability for Windows deployments. No major bugs fixed this month. Impact: faster onboarding, lower support load, and more predictable Windows installer behavior. Technologies demonstrated: PowerShell scripting for installer automation, Windows batch integration (install.bat), and robust change traceability (commit f6f231d3deaf213e848583f24e0dd67d001a9a83).
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for aws/amazon-ssm-agent. Focus: installer experience improvements to accelerate Windows deployments and reduce friction in automated workflows. Delivered a feature that replaces the VBScript-based unzip with a PowerShell-based unzip in the installer flow, enabling a simplified, no-prompt installation process. This enhances automation readiness across CI/CD pipelines and improves reliability for Windows deployments. No major bugs fixed this month. Impact: faster onboarding, lower support load, and more predictable Windows installer behavior. Technologies demonstrated: PowerShell scripting for installer automation, Windows batch integration (install.bat), and robust change traceability (commit f6f231d3deaf213e848583f24e0dd67d001a9a83).
December 2024
November 2024
2 Commits • 2 Features
Nov 1, 2024Monthly work summary focusing on key accomplishments for 2024-11 in aws/amazon-ssm-agent. This month delivered targeted feature work to improve update flexibility and test reliability, supported by concrete commits that enable downgraded inactive versions and strengthen integration testing for critical workflows.成果 reflect a focus on reliability, deployment resilience, and faster feedback loops.
November 2024
2 Commits • 2 Features
Nov 1, 2024Monthly work summary focusing on key accomplishments for 2024-11 in aws/amazon-ssm-agent. This month delivered targeted feature work to improve update flexibility and test reliability, supported by concrete commits that enable downgraded inactive versions and strengthen integration testing for critical workflows.成果 reflect a focus on reliability, deployment resilience, and faster feedback loops.
October 2024
5 Commits • 1 Features
Oct 1, 20242024-10 Monthly Summary focused on reliability and Windows compatibility adjustments for the aws/amazon-ssm-agent. Delivered a critical feature to cancel sessions when MGS indicates termination, fixed regressions by restoring the original RunCommand registration timeout, and simplified Windows hardware information retrieval by removing compatibility hooks in favor of WMIC. Release notes were updated to capture bug fixes, enhancements, Windows-related changes, and timeout settings.
5 Commits • 1 Features
Oct 1, 20242024-10 Monthly Summary focused on reliability and Windows compatibility adjustments for the aws/amazon-ssm-agent. Delivered a critical feature to cancel sessions when MGS indicates termination, fixed regressions by restoring the original RunCommand registration timeout, and simplified Windows hardware information retrieval by removing compatibility hooks in favor of WMIC. Release notes were updated to capture bug fixes, enhancements, Windows-related changes, and timeout settings.
October 2024
September 2024
5 Commits • 1 Features
Sep 1, 2024September 2024 monthly summary for aws/amazon-ssm-agent. Focused on reinforcing agent reliability during heavy usage, improving IPC messaging robustness, and reducing resource leaks. The work emphasizes practical business value by stabilizing long-running sessions, accelerating meaningful task progress, and ensuring predictable behavior under high load.
September 2024
5 Commits • 1 Features
Sep 1, 2024September 2024 monthly summary for aws/amazon-ssm-agent. Focused on reinforcing agent reliability during heavy usage, improving IPC messaging robustness, and reducing resource leaks. The work emphasizes practical business value by stabilizing long-running sessions, accelerating meaningful task progress, and ensuring predictable behavior under high load.
August 2024
2 Commits • 2 Features
Aug 1, 2024August 2024 monthly performance summary for aws/amazon-ssm-agent: Delivered two key optimizations focused on runtime efficiency and health-check reliability. Logging verbosity was reduced by moving high-volume INFO logs to DEBUG, decreasing log noise and improving runtime performance. Health check IP retrieval was streamlined by using a single syscall for route table access, removing unnecessary sorting/filtering to speed health checks. These changes reduce operational overhead for large fleets and contribute to more predictable performance.
2 Commits • 2 Features
Aug 1, 2024August 2024 monthly performance summary for aws/amazon-ssm-agent: Delivered two key optimizations focused on runtime efficiency and health-check reliability. Logging verbosity was reduced by moving high-volume INFO logs to DEBUG, decreasing log noise and improving runtime performance. Health check IP retrieval was streamlined by using a single syscall for route table access, removing unnecessary sorting/filtering to speed health checks. These changes reduce operational overhead for large fleets and contribute to more predictable performance.
August 2024
Activity
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Quality Metrics
Correctness94.2%
Maintainability88.4%
Architecture88.8%
Performance89.4%
AI Usage54.6%
Skills & Technologies
Programming Languages
BatchfileDockerfileGoJSONMarkdownPowerShellShellbash
Technical Skills
AWSBackend DevelopmentCloud ComputingContainerizationDevOpsDockerError handlingGoGo programmingLinux administrationShell scriptingSystem ProgrammingWindows DevelopmentWindows administrationWindows system programming
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline