Technical Skills
Container Orchestration
- Kubernetes — K3s cluster deployment, management, and troubleshooting
- Argo CD — GitOps continuous deployment
- Kustomize — Configuration management with overlays
- Podman — Rootless, daemonless container engine
- Quadlet — systemd-native container management
- Docker Compose — Multi-container application definitions
Infrastructure Automation
- Ansible — Playbooks, roles, and inventory management
- Ansible Automation Platform (AAP) — Enterprise automation controller
- Bash — Shell scripting and automation
- Infrastructure-as-Code — Version-controlled system configurations
Linux Administration
- RHEL — Enterprise Linux (9.x, 10)
- Ubuntu — Server administration (24.04)
- systemd — Service management and unit files
- SELinux — Security policies (permissive mode)
- firewalld — Host firewall management
Networking & Security
- nginx — Reverse proxy, stream proxy, and web server
- Cloudflare Tunnel — Zero-trust networking and CGNAT bypass
- DNS — AdGuard Home, dnsmasq, DoH/DoT/DNSCrypt
- TCP/IP — Subnetting, routing, and network troubleshooting
- Cisco — Enterprise network design (Packet Tracer)
Monitoring & Observability
- Zabbix — Infrastructure monitoring (server, agent, PostgreSQL)
- Prometheus — Metrics collection and time-series storage
- Grafana — Dashboard creation and visualization
- Uptime Kuma — Availability monitoring and status pages
- Netdata — Real-time metrics and anomaly detection
- Loki — Log aggregation (Kubernetes)
Databases & Storage
- PostgreSQL — Database administration and configuration
- Samba — SMB file sharing
- NFS — Network file system exports
- Storage Tiers — Multi-tier storage architecture
Web Development
- PHP / Laravel — REST API development and full-stack applications
- Java / Spring Boot — Enterprise application development
- TypeScript / Preact — Static site generation (Quartz 4)