DEVOPS ENGINEER · DEVELOPER · UKRAINE
NickNickNick
KotovKotov

I build reliable infrastructure and useful software. 10+ years with Unix systems, web development, security and automation — from idea to production.

01° / INFRASTRUCTURE02° / AUTOMATION03° / WEB
01 / INFRASTRUCTURE

Start with
the system.

Servers, networks, observability and security. I care about what happens after “it works on my machine”.

02 / AUTOMATION

Remove the
boring parts.

If a task repeats, it becomes code. Bash, Python and Ansible turn manual operations into predictable pipelines.

03 / DEVELOPMENT

Build the
interface.

Infrastructure is only half the job. I build the products, panels and tools people actually interact with.

04 / AI NATIVE

AI is a tool.
Use it well.

I don’t treat AI as magic and I don’t fear it as a replacement. I use it as another engineering instrument: automate faster, explore wider, verify the result.

HUMAN JUDGMENT × MACHINE SPEED
TECHNOLOGY MATRIX PRODUCTION STACK / LIVE
Debian
Ubuntu
CentOS
AlmaLinux
Linux
Nginx
Docker
Ansible
Z
Zabbix
Grafana
Prometheus
PHP
Python
Node.js
Astro
MySQL
MariaDB
PostgreSQL
Redis
Git
GitHub
GitLab
Cloudflare
Let’s Encrypt
Proxmox
Raspberry Pi
WordPress
Laravel
JavaScript
TypeScript
Debian
Ubuntu
CentOS
AlmaLinux
Linux
Nginx
Docker
Ansible
Z
Zabbix
Grafana
Prometheus
PHP
Python
Node.js
Astro
MySQL
MariaDB
PostgreSQL
Redis
Git
GitHub
GitLab
Cloudflare
Let’s Encrypt
Proxmox
Raspberry Pi
WordPress
Laravel
JavaScript
TypeScript
01 / ABOUT
// PROFILE

Builder. Admin.
Problem solver.

NK

My name is Nick. I develop websites, administer Linux servers and solve the awkward technical problems between code and infrastructure.

For more than 10 years I’ve been setting up Unix systems and building websites of varying complexity. I’m into system security, automation and making things simpler instead of adding layers of complexity.

Outside terminals and editors, I make music, drink coffee and read.

10+years exp.
9own tools
100+projects
∞coffee
nkotov@server:~LIVE SESSION
ready
02 / EXPERTISE

Skills & Stack.

From bare-metal Linux servers to full-stack web development — a decade of practical experience.

01// sysadmin

System Administration

Debian · Ubuntu · AlmaLinux · CentOS · Fedora · Windows Server

02// server

Server Management

cPanel · DirectAdmin · aaPanel · HestiaCP · FastPanel · VestaCP

03// automation

Scripting & Automation

Bash · Python · PowerShell · Ansible · PHP

04// web

Web Development

PHP · HTML/CSS · JavaScript · WordPress · Laravel · Node.js

05// monitoring

Monitoring

Zabbix · Grafana · Prometheus · Netdata · Nagios

06// security

Security

SSL/TLS · VPN · Iptables · Virus Removal · Server Hardening

03 / MY TOOLS

Things I build.

Small products and services I built and maintain for developers, sysadmins and everyone else.

04 / LATEST POSTS

From the Blog.

all posts ↗
WHMCS

Free Zabbix module for WHMCS

WHMCS provisioning module for Zabbix — sell network monitoring as a service. Automates account creation, suspension, termination and password changes for Zab…

read article ↗
WHMCS

Free MailCow module for WHMCS

WHMCS provisioning module for Mailcow — automates creation, suspension, termination and password changes for email domains. Features * Automatic provis…

read article ↗
Hack · Linux

Two global vulnerabilities of April 2026: "Copy Fail" in the Linux kernel and authentication bypass in cPanel/WHM

At the end of April 2026, two critical vulnerabilities surfaced simultaneously, affecting millions of servers around the world. One is in the Linux kernel it…

read article ↗
Linux · Scaner · ClamAV

Scan your website for viruses using maldet + ClamAV

The most effective way is to install LMD (Maldet) and integrate it with the ClamAV engine to speed up scanning. Below is a step-by-step guide for Ubuntu/Deb…

read article ↗
PHP · Linux · ioncube

Install ionCube Loader in Linux Server from PHP

Use command from download: wget http://downloads3.ioncube.com/loader_downloads/ioncube_loaders_lin_x86-64.tar.gz Unarhive: tar -zxvf ioncube_loaders_lin_x…

read article ↗
Linux

How to set correct permissions on files and directories?

Sometimes you need to recursively set permissions on files and folders, but we have a lot of files and folders and it is inconvenient to write chmod every ti…

read article ↗
VPN · Docker

Install 3-XU Xray (Vmess, Vless, Trojan, ShadowSocks и Wireguard)

3-XU - Xray panel with support for multi-protocol multi-user expiration, traffic limitation and IP addresses (Vmess, Vless, Trojan, ShadowSocks and Wireguard…

read article ↗
VPN · tor · outline

We raise VPN Outline and forward traffic through the TOR network

Everything will be running on Debian 12. 1. Install the components: apt install docker docker.io docker-compose 2. Run the script: bash -c "$(wget -qO…

read article ↗
06 / CONTACT

Have a problem?
Let’s solve it.

Website, server optimization, automation or something custom — tell me what needs to work.