242 lines
7.4 KiB
Markdown
242 lines
7.4 KiB
Markdown
# NetConnect Experience Summary (Mar 2024 - Present)
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## Position: System/Network Administrator & DevOps Engineer
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**Company:** NetConnect Group
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**Period:** Martie 2024 - Prezent (aprox. 22 luni)
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**Location:** Remote
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---
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## Major Projects & Achievements
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### 1. PowerDNS High Availability Cluster (pdns, pdns2-6) 🎯
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**Timeline:** Nov 2023 - Dec 2025 (ongoing)
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**Current Version:** v2.4.0-stable → v2.5.0 (in development)
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**Architecture:**
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- Master-Slave MySQL replication cluster
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- Keepalived VIP failover (automatic failback)
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- PowerDNS Authoritative servers (NS1: .214, NS2: .215)
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- Cloudflare API integration (20 zones, 581 records sync)
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- Custom CF-Sync v2.4.0 (Docker-based)
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**Key Achievements:**
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- Designed and deployed production HA DNS infrastructure
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- Implemented automatic failover/failback mechanism
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- Created comprehensive automation scripts (Bash, Python)
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- Cloud-init deployment automation
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- Extreme load testing and optimization
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- Production endpoint: `pdns.infra.netconnect.ro`
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**Technologies:** PowerDNS, MySQL/MariaDB, Keepalived, Docker, Bash, Python, Cloud-init, Ansible
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---
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### 2. InfraManager - Dynamic Infrastructure Management Tool
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**Timeline:** Ongoing development
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**Purpose:** Lightweight infrastructure orchestration
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**Features:**
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- Dynamic service/node management via CLI
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- YAML-based state tracking
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- Template generation for configs
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- Future integrations: Ansible, Terraform, Proxmox API
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**Technologies:** Python, YAML, CLI development
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---
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### 3. ncTesseract - Nextcloud OCR & Elasticsearch Indexing
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**Timeline:** Dec 2024
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**Problem:** Traditional Nextcloud indexing was extremely slow (350k files = 77 days!)
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**Solution:**
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- Custom Python parallel indexer with 48+ workers
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- Tesseract OCR integration
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- Direct Elasticsearch indexing in Nextcloud-compatible format
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- Massive performance improvement (single-threaded PHP → multiprocessing)
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**Technologies:** Python, Multiprocessing, Tesseract OCR, Elasticsearch, Nextcloud
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---
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### 4. Certificate Management Automation (certbotAuto)
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**Timeline:** Sep 2024 - Dec 2024
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**Features:**
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- Automated SSL/TLS certificate management
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- Multi-server deployment via Ansible
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- Let's Encrypt integration (certbot)
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- Centralized secrets management
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- Automated renewal and deployment
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**Technologies:** Bash, Certbot, Ansible, YAML
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### 5. CDR Processing System (cdr2sql)
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**Timeline:** Feb 2024 - Jul 2025
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**Purpose:** Call Detail Records processing and SQL integration
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**Components:**
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- PHP backend for CDR parsing
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- Node.js/Gulp build system
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- Database integration for telecom billing
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**Technologies:** PHP, Node.js, Gulp, MySQL
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---
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### 6. Xen to KVM/Proxmox Migration Tools (xen2lxc, xenserver_to_xen)
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**Timeline:** Sep-Nov 2024
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**Purpose:** Automated VM migration from legacy Xen infrastructure
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**Features:**
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- XVA image extraction and conversion
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- Disk preparation for QEMU/KVM
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- Automated boot scripts
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- Proxmox integration
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**Technologies:** Python, Bash, QEMU, Proxmox, Xen
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---
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### 7. Cataleya Integration (cataleya2db)
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**Timeline:** Oct 2024
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**Purpose:** Telecom data integration with Cataleya platform
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**Technologies:** PHP, Database integration
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---
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### 8. Laravel Development Environment with SQL Anywhere
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**Timeline:** Aug-Sep 2024
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**Purpose:** Custom Docker-based development environment
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**Features:**
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- Laravel + SQL Anywhere integration
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- Nginx + PHP-FPM stack
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- Docker Compose orchestration
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**Technologies:** Docker, Laravel, PHP, Nginx, SQL Anywhere
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### 9. Portability System - Czech Republic (portabilitateCehia.org)
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**Timeline:** Ongoing maintenance
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**Purpose:** Automated portability data download from Czech telecom portal
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**Challenges Solved:**
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- SSL certificate renewal for client authentication
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- Wildcard certificate management (*.netconnect.ro)
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- HTTPS client certificate authentication
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**Technologies:** OpenSSL, wget, SSL/TLS, Bash
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---
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### 10. Infrastructure Services
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**Timeline:** Ongoing
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**Deployed/Maintained:**
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- **Zabbix Monitoring:** Docker-based monitoring stack
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- **FreeSWITCH:** VoIP infrastructure (Docker)
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- **Traefik:** Reverse proxy and load balancer
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- **Infrastructure automation:** Various supporting services
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---
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## Core Competencies Demonstrated
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### DevOps & Automation
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- CI/CD pipeline development
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- Infrastructure as Code (Ansible, Terraform concepts)
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- Docker containerization
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- Cloud-init automation
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- Custom automation tooling (Bash, Python, Perl)
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### System Administration
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- High Availability cluster design and deployment
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- MySQL/MariaDB replication and failover
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- DNS infrastructure (PowerDNS)
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- Load balancing (Keepalived)
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- SSL/TLS certificate management
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### Development
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- Python (multiprocessing, CLI tools, automation)
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- Bash scripting (complex automation)
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- PHP (backend services, integrations)
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- Perl (legacy support, migration)
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- JavaScript/Node.js (build systems)
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### Networking
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- DNS management and troubleshooting
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- VIP failover mechanisms
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- Firewall configuration
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- VPN integration concepts
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- Network troubleshooting (tcpdump, netstat, ss)
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### Virtualization & Cloud
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- Proxmox management
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- Xen → KVM migration
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- Docker (multi-service orchestration)
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- Cloud-init deployment
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- VM provisioning and management
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### Databases
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- MySQL Master-Slave replication
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- Elasticsearch integration
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- SQL Anywhere (legacy support)
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- Database optimization and monitoring
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---
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## Key Technologies Used
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**Operating Systems:** Debian, Ubuntu, CentOS, Alpine Linux
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**Scripting:** Bash, Python, Perl, PHP
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**Orchestration:** Docker, Docker Compose, Ansible (planned)
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**Databases:** MySQL/MariaDB, PostgreSQL, Elasticsearch, SQL Anywhere
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**Web Stack:** Nginx, Apache, PHP-FPM, Tomcat (limited)
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**Monitoring:** Zabbix, Systemd journaling
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**Version Control:** Git
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**Networking:** PowerDNS, Keepalived, Cloudflare API, OpenSSL
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**Other:** Tesseract OCR, FreeSWITCH, Traefik
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---
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## Soft Skills Demonstrated
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- **Problem Solving:** Reduced Nextcloud indexing from 77 days to hours
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- **Architecture Design:** Built production HA DNS from scratch
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- **Documentation:** Comprehensive guides for all major projects
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- **Automation Focus:** Consistently automated manual processes
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- **Tool Development:** Created custom tools when needed (InfraManager, CF-Sync)
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- **Migration Expertise:** Successfully migrated legacy Xen infrastructure
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---
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## For CV Update
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**Replace RnD Software Group entry (Apr 2021 - Present) with:**
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### NetConnect Group | Bucharest, Romania (Remote)
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**SYSTEM/NETWORK ADMINISTRATOR & DEVOPS ENGINEER**
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*Mar 2024 - Present*
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- Designed and deployed production High Availability DNS infrastructure using PowerDNS, MySQL Master-Slave replication, and Keepalived VIP failover serving 20+ zones with automatic failover/failback
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- Developed custom automation tools including parallel OCR indexing system (48+ workers) reducing Nextcloud indexing time from 77 days to hours, and infrastructure management CLI tool (Python)
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- Automated SSL/TLS certificate management across multiple servers using certbot, Ansible, and custom bash orchestration
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- Migrated legacy Xen virtual infrastructure to Proxmox/KVM using custom Python/Bash tooling
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- Maintained and integrated telecom services including CDR processing, portability systems, and FreeSWITCH VoIP infrastructure
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- Technologies: PowerDNS, MySQL/MariaDB, Keepalived, Docker, Python, Bash, Ansible, Elasticsearch, Proxmox, Zabbix
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---
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**Note:** Această experiență arată o evoluție clară de la sysadmin tradițional (RnD) către DevOps modern cu focus pe automation, HA, și custom tooling development.
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