Coolify Installation Script Failed

If the Coolify installation script completes but you cannot access Coolify, or if containers are missing, this guide will help you debug and fix the issue.

Common Symptoms

• Installation script finishes but no access URL is displayed
• Script shows success but Coolify web interface is not accessible on port 8000
• Docker containers are missing or not running
• Installation appears to complete but something doesn't work

Enable Verbose Mode for Debugging

If you're experiencing installation issues, you can run the installation script in verbose mode to see exactly what commands are being executed:

curl -fsSL https://cdn.coollabs.io/coolify/install.sh -o install.sh
bash -x install.sh 2>&1 | tee installation-debug.log

This will:

• Show every command as it executes (bash -x)
• Display both stdout and stderr (2>&1)
• Save all output to installation-debug.log for later review (tee)

Step 1: Check Installation Logs

The installation script creates log files that contain valuable information about what happened during installation.

Finding Your Logs

The installation process creates two log files in /data/coolify/source/:

1. Installation log: installation-YYYYMMDD-HHMMSS.log
2. Upgrade log: upgrade-YYYY-MM-DD-HH-MM-SS.log

View Your Logs

Find your most recent log files:

# List all log files sorted by date (most recent first)
ls -lt /data/coolify/source/*.log | head -5

View the installation log:

# Replace the date/time with your actual log file
tail -100 /data/coolify/source/installation-YYYYMMDD-HHMMSS.log

# Or view the entire log
cat /data/coolify/source/installation-YYYYMMDD-HHMMSS.log

View the upgrade log:

# Replace the date/time with your actual log file
tail -100 /data/coolify/source/upgrade-YYYY-MM-DD-HH-MM-SS.log

# Or view the entire log
cat /data/coolify/source/upgrade-YYYY-MM-DD-HH-MM-SS.log

What to Look For

Look for error messages containing:

• ERROR:
• Failed to
• could not
• Connection refused
• Permission denied
• No such file or directory

Step 2: Verify Docker Installation

Check if Docker is properly installed and running:

# Check Docker version
docker --version

# Check Docker Compose plugin
docker compose version

# Check if Docker daemon is running
sudo systemctl status docker

Expected output for docker --version:

Docker version 27.0.x, build xxxxx

If Docker is not installed or not running:

# Start Docker service
sudo systemctl start docker

# Enable Docker to start on boot
sudo systemctl enable docker

# Remove Docker snap
sudo snap remove docker

# Then re-run the Coolify installation script
curl -fsSL https://cdn.coollabs.io/coolify/install.sh | sudo bash

Step 3: Check Port Availability

Coolify requires specific ports to be available. The most critical port for initial installation is port 8000.

Check Port 8000 (Coolify Web Interface)

On Linux with ss (recommended):

sudo ss -tulpn | grep :8000

On Linux with lsof:

sudo lsof -i :8000

On Linux with netstat:

sudo netstat -tulpn | grep :8000

If these commands return no output, the port is free ✓

If they show output, something is using port 8000. Example:

tcp   LISTEN  0  4096  *:8000  *:*  users:(("some-app",pid=1234,fd=3))

Check Other Coolify Ports

# Port 6001 (Soketi/Real-time)
sudo ss -tulpn | grep :6001

# Port 5432 (PostgreSQL - usually internal only)
sudo ss -tulpn | grep :5432

# Port 6379 (Redis - usually internal only)
sudo ss -tulpn | grep :6379

Fix Port Conflicts

If port 8000 is in use, you have two options:

Option 1: Stop the conflicting service

# Find the process ID (PID) from the ss/lsof output
sudo kill <PID>

# Or stop the service if you know what it is
sudo systemctl stop <service-name>

Option 2: Change Coolify's port (Advanced)

Modify /data/coolify/source/.env and change the APP_PORT variable, then re-run the installation script.

Step 4: Validate Docker Containers

Check if all Coolify containers are running:

# List all containers (running and stopped)
docker ps -a

# Filter for Coolify containers only
docker ps -a --filter "name=coolify"

Expected Containers

You should see these containers:

Check Container Status

If containers are stopped or exited, check their logs:

# View logs for specific container
docker logs coolify
docker logs coolify-realtime
docker logs coolify-db
docker logs coolify-redis

# Follow logs in real-time
docker logs -f coolify

Restart Stopped Containers

If containers are stopped, try starting them:

# Start all Coolify containers
cd /data/coolify/source
docker compose --env-file .env -f docker-compose.yml -f docker-compose.prod.yml up -d

Step 5: Verify Docker Images

Check if all required Docker images were pulled successfully:

# List Coolify-related images
docker images | grep coolify
docker images | grep ghcr.io/coollabsio

Expected Images

You should see at least:

• ghcr.io/coollabsio/coolify (or your custom registry)
• ghcr.io/coollabsio/coolify-helper
• ghcr.io/coollabsio/coolify-realtime

Missing Images

If images are missing, there may have been a network issue during installation. Try pulling them manually:

# Pull the latest Coolify images
docker pull ghcr.io/coollabsio/coolify:latest
docker pull ghcr.io/coollabsio/coolify-helper:latest
docker pull ghcr.io/coollabsio/coolify-realtime:latest

# Then restart Coolify
cd /data/coolify/source
docker compose --env-file .env -f docker-compose.yml -f docker-compose.prod.yml up -d --force-recreate

Step 6: Check Docker Networks

Verify that the Coolify Docker network exists:

# List Docker networks
docker network ls | grep coolify

Expected output:

<network-id>   coolify   bridge   local

If the network doesn't exist, create it:

# Try creating with IPv6 support first
docker network create --attachable --ipv6 coolify

# If that fails, create without IPv6
docker network create --attachable coolify

Step 7: Verify Disk Space

Check available disk space:

df -h /

Coolify requires:

• Minimum 30GB total disk space
• Minimum 20GB available space

Common Issues & Solutions

Issue: Script Completes But No Access URL Shown

Symptoms:

• Installation script finishes
• No error messages
• But no URL like http://your-ip:8000 is displayed

Possible causes:

1. Container creation failed silently
2. Network issues prevented fetching public IP
3. Docker images failed to pull

Solution:

# Check if containers are running
docker ps --filter "name=coolify"

# If containers are missing, check upgrade log
cat /data/coolify/source/upgrade-*.log

# Look for errors in the log, then re-run upgrade
cd /data/coolify/source
bash upgrade.sh latest latest ghcr.io false

Issue: Port 8000 Already in Use

Symptoms:

• Installation completes
• Containers appear to be running
• But Coolify web interface is not accessible

Solution:

See Step 3: Check Port Availability above.

Issue: Docker Image Pull Failures

Symptoms:

• Installation takes very long time
• Errors like "failed to pull image" or "manifest unknown"
• Some Docker images are missing

Possible causes:

1. Network connectivity issues
2. DNS resolution problems
3. Registry rate limiting
4. Custom registry authentication issues

Solution:

# Test network connectivity to GitHub Container Registry
curl -I https://ghcr.io

# Check DNS resolution
nslookup ghcr.io

# Try pulling images manually
docker pull ghcr.io/coollabsio/coolify:latest

# If using custom registry, login first
docker login your-registry.com

Issue: Insufficient Permissions

Symptoms:

• "Permission denied" errors in logs
• Cannot create directories
• Cannot modify files in /data/coolify/

Solution:

The installation script must be run as root or with sudo:

# Re-run with sudo
curl -fsSL https://cdn.coollabs.io/coolify/install.sh | sudo bash

Issue: SSH Configuration Problems

Symptoms:

• Installation completes
• Coolify accessible but cannot connect to localhost server
• SSH-related errors in Coolify interface

Possible cause:

• SSH PermitRootLogin is disabled
• SSH keys not properly configured

Solution:

Check SSH configuration:

# Check PermitRootLogin setting
sudo sshd -T | grep permitrootlogin

Should show:

• permitrootlogin yes, or
• permitrootlogin prohibit-password, or
• permitrootlogin without-password

If it shows permitrootlogin no, see the OpenSSH Configuration Guide.

Manual Verification Checklist

Run these commands to get a complete diagnostic report:

echo "=== COOLIFY INSTALLATION DIAGNOSTICS ==="
echo ""

echo "1. Installation Logs:"
ls -lt /data/coolify/source/*.log 2>/dev/null | head -5 || echo "No logs found"
echo ""

echo "2. Docker Version:"
docker --version
docker compose version
echo ""

echo "3. Docker Service Status:"
sudo systemctl status docker --no-pager -l
echo ""

echo "4. Coolify Containers:"
docker ps -a --filter "name=coolify" --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}"
echo ""

echo "5. Docker Images:"
docker images --format "table {{.Repository}}\t{{.Tag}}\t{{.Size}}" | grep -E "REPOSITORY|coolify"
echo ""

echo "6. Docker Networks:"
docker network ls | grep -E "NETWORK|coolify"
echo ""

echo "7. Port 8000 Status:"
sudo ss -tulpn | grep :8000 || echo "Port 8000 is free"
echo ""

echo "8. Disk Space:"
df -h /
echo ""

echo "9. Environment File:"
ls -lh /data/coolify/source/.env 2>/dev/null || echo ".env file not found"
echo ""

Copy the output of this diagnostic script when asking for help.

Recovery Steps

Clean Re-installation

If you want to completely uninstall and start fresh:

Follow the Uninstallation Guide to properly remove Coolify, then re-run the installation script:

curl -fsSL https://cdn.coollabs.io/coolify/install.sh | sudo bash

Retry Installation Without Full Reset

If you just want to retry without losing data:

# Re-run the installation script
curl -fsSL https://cdn.coollabs.io/coolify/install.sh | sudo bash

The script is designed to be idempotent (safe to run multiple times).

Use Manual Installation

If the automated script continues to fail, try the Manual Installation method.

Getting Help

If you've followed all the steps above and still have issues, please ask for help in our Discord community.

Information to Provide

When asking for help, include:

1. Your system information:

   cat /etc/os-release
   uname -m

2. Installation logs: (last 100 lines)

   tail -100 /data/coolify/source/installation-*.log
   tail -100 /data/coolify/source/upgrade-*.log

3. Docker status:

   docker ps -a --filter "name=coolify"
   docker images | grep coolify

4. Any error messages you see in logs or on screen

5. What you've already tried to fix the issue

This information will help the community diagnose your problem much faster!

Related Documentation

• Installation Guide
• Manual Installation
• Firewall Configuration
• OpenSSH Configuration
• Raspberry Pi OS Setup
• Docker Installation Failed