.. _edunao_pro:

======
Edunao
======

DevOps / Sysadmin at EDUNAO *from 09/2020 to 07/2024*
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EDUNAO is a Moodle Premium Partner, providing clients with hosting, development, and support services to help them share knowledge—whether for businesses or universities.

Role
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- **Development of Internal Tools & Performance Optimization**  

  Developed internal tools to automate repetitive tasks, optimized system performance, and identified and resolved bottlenecks.

- **Cross-Team Collaboration**  

  Worked with various teams to ensure effective coordination and project success.

- **High-Performance Web Infrastructure Creation**  

  Designed and implemented high-performance, clustered web infrastructures.

- **Support & Systems Management**  

  Led and mentored the systems team, handled technical support issues, and maintained internal IT infrastructures to ensure optimal performance and availability.

- **Proof of Concept (POC) Development**  

  Developed and demonstrated proof of concepts for potential projects and technologies.

- **Annual Upgrade Projects**  

  Planned and executed infrastructure and Moodle version upgrade projects.

- **Security Configuration Improvement**  

  Continuously improved security configurations to ensure state-of-the-art protection and implemented cybersecurity strategies to safeguard systems and data.

Achievements 
------------

- **Multi-Node SQL Replication Architecture**  

  - Designed and deployed two multi-node **Galera clusters**.  
  - Established **SQL replication** between clusters.  
  - Resolved **Moodle-related issues** in a distributed infrastructure (authentication, session tracking, etc.).  

- **Security Enhancements for the CNIL**  

  - Implemented **Content Security Policy (CSP)** to mitigate XSS and Clickjacking attacks.  
  - Refined **firewall rules** to meet strict security requirements.  
  - Deployed a **custom bastion server** to secure access.  

- **Migration of Proprietary Installation Scripts from Bash to Ansible**  

  - Managed project workflow and ensured seamless integration.  
  - Converted and optimized legacy scripts for **Ansible automation**.  
  - Debugged and refined automation processes.  

- **Automated Let’s Encrypt Certificate Generation**  

  - Adapted **Let’s Encrypt** automation to accommodate specific workflow and proprietary code.  

- **Load Testing Implementation**  

  - Designed **load testing scenarios** using **JMeter**.  
  - Deployed testing infrastructure on **Azure**.  
  - Measured results and optimized system/database/network configurations for performance goals.  

- **Proof of Concept & Migration from SVN to Git**  

  - Conducted multiple **POCs** to determine the best **Git solution**.  
  - Developed a **migration procedure** and project plan.  
  - Successfully completed **SVN-to-Git migration**.  

- **Annual Upgrade Automation**  

  - Automated **test platform deployment** to streamline **Moodle upgrades**.  
  - Developed a **Linux OS upgrade automation process** (attack surface reduction, access controls, scripts, transition to **systemd**, **PHP version updates**).

- **Authentication Delegation Automation with Shibboleth**  

  - Automated **Service Provider** creation.
  - Integrated authentication system with **Moodle**.

- **BigBlueButton (BBB) Infrastructure & Automation**  

  - Designed and maintained **BBB infrastructures**.  
  - Developed automation scripts to enhance performance and reliability.  

-  **Load Balancers using OVH API**  

  - Automated configuration to fit with our internal needs.  
  - Automated addition, enabling or disabling of backends.  
  - Automated Let's Encrypt certificate generation through OVH LB and certificate upload.  

- *And more...*

Technologies
------------

- Linux (Ubuntu)  
- Bash, Python  
- Ansible
- Gitolite, Gitlab
- JMeter
- MySQL, MariaDB, Galera, PostgreSQL  
- OVH Cloud, Azure
- Shibboleth, Auth Delegation  
- Let’s Encrypt, CSP, Firewalling, OVH Load Balancers  
- Prometheus, Grafana
- BigBlueButton