Ajout documentation projets OpenClassrooms (P02-P13) avec support bilingue

- Add all project documentation pages in French and English
- Include PDF viewers for presentations and documents (P10, P12)
- Add collapsible sections for scripts and logs (P10)
- Add static assets for all projects
- Update sidebars with new projets-openclassrooms category
- Add npm start:en script for testing English locale

i18n/en/docusaurus-plugin-content-docs/current/projets-openclassrooms/p08-supervision-nagios.md

@@ -0,0 +1,73 @@
+---
+sidebar_position: 8
+---
+
+# P8 - Monitoring with Nagios
+
+## Context
+
+Implementation of a monitoring solution for MediaSante: Nagios deployment with custom probes and log centralization with Rsyslog.
+
+## Objectives
+
+- Install and configure Nagios Core
+- Create custom monitoring probes
+- Centralize logs with Rsyslog
+- Define SLA indicators and produce reports
+
+## Technologies Used
+
+- **Nagios Core**: infrastructure monitoring
+- **NRPE**: remote probe execution
+- **Rsyslog**: log centralization
+- **SNMP**: network monitoring
+
+## Configured Probes
+
+| Service | Warning Threshold | Critical Threshold | Operator Action |
+|---------|-------------------|-------------------|-----------------|
+| CPU | > 80% | > 95% | Identify consuming processes |
+| RAM | > 85% | > 95% | Check memory leaks |
+| Disk | > 80% | > 90% | Cleanup or extension |
+| HTTP | latency > 2s | unavailable | Service restart |
+| MySQL | connections > 80% | > 95% | Query analysis |
+
+## Deliverables
+
+<details>
+<summary>Nagios Configuration (screenshot)</summary>
+
+![Nagios Configuration](/assets/projets-oc/p08/BENE_Mael_1_config_nagios_062025.png)
+
+</details>
+
+<details>
+<summary>Rsyslog Configuration (archive)</summary>
+
+Archive containing Rsyslog configuration files for log centralization.
+
+[Download Rsyslog configuration archive](/assets/projets-oc/p08/BENE_Mael_2_config_Rsyslog_062025.tar.gz)
+
+</details>
+
+<details>
+<summary>SLA Indicators (PDF)</summary>
+
+<iframe src="/assets/projets-oc/p08/BENE_Mael_3_indicateurs_062025.pdf" width="100%" height="600px" style={{border: 'none'}}></iframe>
+
+</details>
+
+<details>
+<summary>Probes Documentation (PDF)</summary>
+
+<iframe src="/assets/projets-oc/p08/BENE_Mael_4_documentation_062025.pdf" width="100%" height="600px" style={{border: 'none'}}></iframe>
+
+</details>
+
+## Skills Acquired
+
+- Monitoring solution deployment
+- Custom probe creation
+- Log centralization and analysis
+- Performance indicator definition (KPI/SLA)
+- Availability report production