PORT 9001 / TCPInfrastructure & CloudExposure Risk: Medium

Port 9001: MinIO Web Console / Supervisor — MinIO S3 Object Storage Admin Console & PHP Xdebug

Default web administration dashboard port for MinIO S3-compatible object storage.

Default Service

MinIO Web Console / Supervisor

Process: minio

Transport Protocol

TCP

IANA Registered Port 9001

Docker Port Flag

-p 9001:9001

Container to Host Mapping

How to Check & Kill Process on Port 9001 (EADDRINUSE Fix)

macOS & Linux (lsof / kill)

# Find process using port 9001
sudo lsof -i :9001

# Instantly kill process on port 9001
lsof -ti:9001 | xargs kill -9

Windows (PowerShell & CMD)

# Find PID listening on port 9001
netstat -ano | findstr :9001

# Force kill by PID
taskkill /PID <PID_NUMBER> /F

Cross-Platform Node.js One-Liner

# Kill port 9001 via npx
npx kill-port 9001

# Or diagnose via Castov CLI
npx castov fix "EADDRINUSE :::9001"

Linux Firewall (UFW) & Connectivity Test

# Test if port 9001 is reachable
nc -zv localhost 9001

# Allow or deny port 9001 in UFW
sudo ufw allow 9001/tcp

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Frequently Asked Questions about Port 9001

What is Port 9001 used for?

Port 9001 is the standard network port for MinIO Web Console / Supervisor (MinIO S3 Object Storage Admin Console & PHP Xdebug) operating over TCP. The typical system daemon or process is minio.

How do I kill a process running on Port 9001 (EADDRINUSE)?

On macOS and Linux, run: lsof -ti:9001 | xargs kill -9 (or npx kill-port 9001). On Windows PowerShell/CMD, run: netstat -ano | findstr :9001 and then taskkill /PID <PID> /F.