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Sylvain Cresto

PROFILE

Sylvain Cresto

Over 11 months, Stéphane Cresto engineered robust monitoring and integration features for the centreon/centreon-plugins repository, focusing on scalable observability and operational reliability. He developed and enhanced plugins for cloud, storage, and network systems, implementing REST API integrations, SNMP monitoring, and authentication mechanisms using Perl and Python. Stéphane addressed complex issues such as token management, encoding compatibility, and process monitoring, ensuring accurate data collection and secure automation. His work included expanding test coverage, refining error handling, and optimizing performance for large-scale deployments. The depth of his contributions improved data quality, reduced operational risk, and enabled proactive incident response across diverse environments.

Overall Statistics

Feature vs Bugs

68%Features

Repository Contributions

108Total
Bugs
30
Commits
108
Features
64
Lines of code
1,176,202
Activity Months11

Work History

April 2026

6 Commits • 5 Features

Apr 1, 2026

April 2026 monthly summary for centreon-plugins focusing on business value, reliability, and API performance improvements across the repo centreon/centreon-plugins. Key deliverables include enhancements to process monitoring, API responses, authentication, and data quality, as well as a reliability fix in the SNMP plugin. The work strengthens operational monitoring capabilities and security while enabling faster data-driven decisions.

March 2026

22 Commits • 12 Features

Mar 1, 2026

March 2026 delivered notable feature and reliability improvements across centreon-plugins: expanded monitoring capabilities, REST API integrations, and platform coverage for backup, cloud, network, and OS metrics. Key features include a new Veeam VOne REST API Pack (CTOR-1267) with two commits, and added Veeam REST API support for Veeam 13. OS/Linux process-mode enhancements enable max open file checks and per-process monitoring. Additional coverage was added with a Cloud Linux Libvirt local plugin and Cloud AWS API Gateway dimension configurability. In parallel, maintenance and QA improvements fixed token refresh flows and lockfile handling for CommVault CommServe REST API, modernized SNMP regex, and improved safety around sudoers and Redis/ILO thresholds. These contributions collectively expand monitoring scope, improve automation reliability, and reduce operational risk across on-premises and cloud environments.

February 2026

17 Commits • 9 Features

Feb 1, 2026

February 2026 monthly summary for the centreon-plugins repository (centreon/centreon-plugins). Focused on reliability, performance, and extensibility across backup, hardware, and monitoring plugins. Delivered targeted improvements and fixes across PowerShell execution, SNMP integrations, device thresholds, and REST API compatibility, while maintaining stable production readiness. Note: token management work for the Commvault REST API was implemented as groundwork but later reverted to ensure deployment readiness. Key achievements highlight how the team improved automation, observability, and device support, translating into faster issue resolution and more accurate monitoring data.

January 2026

14 Commits • 9 Features

Jan 1, 2026

January 2026: Expanded monitoring coverage, improved reliability, and enhanced alerting across Centreon plugins. Delivered five high-impact features that broaden cross-platform visibility and enable proactive operations, combined with targeted fixes that reduce noise and MTTR. Key features include a new Apache CXF JMX monitoring connector for service discovery and performance metrics; an iSendPro SMS notification plugin for configurable SMS alerts; FibreAlliance automatic component loading with no_load_components removed and corresponding docs/tests updated; Cisco IP SLA completion time monitoring to quantify network performance; and a Fortinet FortiAuthenticator REST connector for REST-based FortiToken monitoring. Additional work included PostgreSQL connection handling refinements with enhanced thresholds and filtering, contributing to improved database observability. These changes, together with bug fixes in SNMP, MSSQL, and PowerShell, deliver greater reliability, automation, and business value by increasing visibility, accelerating issue diagnosis, and enabling scalable instrumentation. Technologies demonstrated include SNMP, REST APIs, JMX, Windows PowerShell handling, and cross-platform monitoring patterns.

December 2025

7 Commits • 4 Features

Dec 1, 2025

December 2025 monthly summary for centreon-plugins. Highlights include two new plugins and data-retrieval enhancements, plus operational improvements that increase reliability and visibility across monitoring workflows. Key features delivered include a Network Security plugin enabling site discovery, management capabilities, and improved connectivity status reporting; an OpenStack REST API Plugin Suite to monitor compute, network, and storage services and to enhance project management and service discovery; API pagination for IP Fabric to improve data retrieval efficiency and user experience; and a Backup Job Status enhancement to include the client name in the output prefix for clearer tracking. Major bugs fixed include correcting Oracle Metrics to prevent negative values in tablespace usage metrics, and addressing network label duplication with clarified help messages in the Cato network plugin. Overall, these efforts improve data accuracy, traceability, and operator productivity, while expanding the platform’s monitoring coverage and scalability.

October 2025

8 Commits • 6 Features

Oct 1, 2025

October 2025 (2025-10) monthly summary for centreon/centreon-plugins. Delivered a broad set of features and robustness improvements across cloud, storage, hardware, and monitoring plugins, translating into stronger monitoring capabilities, better configuration control, and clearer error guidance. Notable work includes Office 365 service-status enhancements, authentication and pagination improvements for Commvault REST API, API path validation and improved error messaging for Meraki, and expanded encoding compatibility for API responses.

September 2025

5 Commits • 3 Features

Sep 1, 2025

Month: 2025-09 — Concise performance-focused summary for centreon-plugins. This period delivered notable feature expansions across monitoring capabilities, reinforced data reliability for REST API plugins, and established groundwork for broader enterprise visibility. The work aligns with business goals of reducing mean time to detect (MTTD), increasing data accuracy, and enabling proactive incident response.

August 2025

12 Commits • 7 Features

Aug 1, 2025

Month: 2025-08 | This month delivered targeted feature work and reliability improvements across key plugins in centreon-plugins, expanding monitoring coverage, security, and discovery while tightening test robustness. The work directly enhances customer visibility, reduces MTTR, and enables secure, scalable monitoring for diverse environments.

July 2025

7 Commits • 5 Features

Jul 1, 2025

July 2025 performance summary: Implemented high-impact monitoring features, strengthened security, and expanded coverage across core Centreon repositories. Delivered cost visibility improvements for Azure, enhanced health checks for Vault, improved debugging with curl logging, expanded Apache performance metrics, and introduced a new REST API plugin pack for HP Alletra. Fixed a security logging issue to prevent credential leakage in collect logs. These initiatives improve business value through actionable observability, reliability, and secure data handling.

June 2025

6 Commits • 2 Features

Jun 1, 2025

June 2025 monthly summary for the Centreon developer team. Delivered feature enhancements, stability fixes, and CI improvements across two core repositories, with a clear impact on monitoring capabilities, reliability, and deployment safety. Highlights include a new SSL Certificate Monitoring Mode for the F5 BIG-IP SNMP Plugin, expanded unit-test coverage across distributions, a bug fix for autodisco pod IP handling in Kubernetes, and database/schema/permission hardening in Centreon Collect to prevent restarts and data issues. Commit references are included for traceability.

May 2025

4 Commits • 2 Features

May 1, 2025

May 2025 monthly review focused on delivering observability enhancements, stability fixes, and security/documentation improvements that drive reliability and business value across monitoring operations. Key work spans two repositories (centreon-plugins and centreon-collect), with concrete features, bug fixes, and groundwork for future scalability.

Activity

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Quality Metrics

Correctness88.6%
Maintainability84.0%
Architecture83.2%
Performance81.4%
AI Usage27.4%

Skills & Technologies

Programming Languages

BashDockerfileJSONJavaMarkdownPerlPythonRobot FrameworkSQLShell

Technical Skills

API DevelopmentAPI IntegrationAPI developmentAPI integrationAS400 IntegrationAWS CloudWatch integrationAWS integrationApache Server MonitoringAuthenticationAuthentication ManagementAuthentication MechanismsAzure API IntegrationBackend DevelopmentBug FixingCI/CD

Repositories Contributed To

2 repos

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

centreon/centreon-plugins

May 2025 Apr 2026
11 Months active

Languages Used

PerlDockerfileRobot FrameworkShellJavaPythonYAMLBash

Technical Skills

Bug FixingDatabase Plugin DevelopmentEnvironment Variable ManagementPerlPlugin DevelopmentSNMP Monitoring

centreon/centreon-collect

May 2025 Jul 2025
3 Months active

Languages Used

MarkdownPerlSQLYAML

Technical Skills

Backend DevelopmentDocumentationProxy ConfigurationUnit TestingBug FixingCI/CD