SYSTEM ONLINE · all services healthy

UĞUR KARAASLAN

root@uk:~$ ▋

As a Senior System Administrator, I design, build, scale, secure and keep Linux & Windows infrastructures running 24/7. From virtualization to container orchestration, from hosting platforms to disaster recovery — end-to-end operations, with every problem solved at its root.

CPU23%
RAM61%
NET1.2 Gb/s
NODES48/48● healthy
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LinuxDockerKubernetesVMware ESXiProxmoxcPanel/WHMPleskNginxLiteSpeedMariaDBPostgreSQLHAProxyAnsibleMikroTikCiscoZabbixGrafanaCloudLinuxWHMCSHyper-VAI Ops LinuxDockerKubernetesVMware ESXiProxmoxcPanel/WHMPleskNginxLiteSpeedMariaDBPostgreSQLHAProxyAnsibleMikroTikCiscoZabbixGrafanaCloudLinuxWHMCSHyper-VAI Ops
Who I am

About Me

Hi, I'm Uğur Karaaslan — a Senior System Administrator with many years of hands-on experience designing, operating and rescuing mission-critical server infrastructures.

Over the years I have worked across virtually every layer of the stack: bare-metal servers and data center hardware, Linux and Windows Server, VMware, Hyper-V, Proxmox and KVM virtualization, Docker and Kubernetes clusters, hosting control panels, web servers, databases, mail systems, networking, firewalls and load balancers. This breadth lets me see the whole picture — and find the real cause of a problem fast, wherever it hides.

I am the person teams call when something is truly broken. A server that won't boot, a website that suddenly slows to a crawl, a database under heavy load, mail that refuses to deliver, a network bottleneck or a security incident in the middle of the night — I analyze, isolate and resolve it, then put proactive measures in place so it never happens again. There is no system I'm not at home with, and no problem I leave unsolved.

Beyond firefighting, I build infrastructure that simply doesn't break: careful capacity planning, hardened security, tested backups and disaster recovery, high availability and clear monitoring. I also act as the final escalation point for customer service and engineering teams, turning complex technical issues into fast, reliable solutions.

My goal is simple: stable, fast and secure systems — and the peace of mind that comes from knowing every issue is in the hands of someone who has seen it all.

#ProblemSolver#Linux#WindowsServer#Virtualization#Containers#Networking#Hosting#Security#HighAvailability#AIOps
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Technologies & Tools
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Areas of Expertise
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Control Panels
24/7
Operations & Response
Responsibilities

What I Do

Critical Incident Resolution

Instant response to outages and critical incidents. Root-cause analysis across servers, networks and applications — and permanent fixes, not workarounds.

Infrastructure Architecture

Design, installation, configuration and lifecycle updates of physical, virtual and container-based server environments to enterprise standards.

Capacity & Performance Engineering

Resource trend analysis, growth-ready capacity planning and deep performance tuning that keeps every system fast under any load.

Security & Hardening

Firewall policies, WAF, DDoS mitigation, malware cleanup, server hardening and incident response to keep infrastructure locked down.

Backup, HA & Load Balancing

Automated and verified backups, tested disaster-recovery plans, high availability clusters and load balancing for uninterrupted service.

Network Administration

Switching, routing, VLANs, VPNs, DNS and traffic analysis — diagnosing latency, packet loss and connectivity problems end to end.

Final Escalation & Team Support

The last line for customer service and engineering teams: solving the hardest cases, sharing know-how and raising the whole team's level.

Hosting, Domain & WHMCS

End-to-end management and automation of web hosting, domain and server services, including platform migrations without downtime.

Automation & AI-Driven Operations

Scripting, infrastructure as code and AI-assisted analysis that detect issues early and turn repetitive work into reliable automation.

Stack

Areas of Expertise

Pick a category — each one covers real production experience in installation, configuration, troubleshooting and management.

How I work

Infrastructure Lifecycle

Analysis & Planning

Understanding the real need, sizing resources and designing an architecture that is fast, secure and ready to grow.

$ capacity --forecast 12m

Build & Deploy

Bare-metal, virtual machine or container — operating systems and services deployed cleanly, repeatably and by standard.

$ ansible-playbook site.yml

Configure & Harden

Performance tuning, security hardening, firewall rules, SSL and access policies — closed to threats from day one.

$ csf -r && sshd -t

Scale & High Availability

Load balancing, clustering and failover so services stay online even when hardware or traffic says otherwise.

$ systemctl reload haproxy

Monitor & Alert

Metrics, logs and smart alerts — problems are spotted and fixed before users ever notice them.

$ promtool check rules

Backup & Recovery

Automated, encrypted and verified backups with recovery scenarios that are actually tested — not just hoped for.

$ restic snapshots --latest

Resolve & Improve

Rapid incident response, root-cause analysis and continuous improvement — every problem makes the system stronger.

$ journalctl -p err -b
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Real-time

Live Terminal

root@prod-node-01: ~

    
RACK A-07 · 42U
Proficiency

Skill Map

Contact

Let's make your infrastructure
unstoppable.

Server down? Website slow or unreachable? Network acting up? Whatever the problem, I can help — fast. Reach out for anything that calls for a Senior System Administrator or Network Administrator.

Send a short description of your problem or project — I'll analyze it and get back to you as soon as possible with a clear plan.