Linux

This guide explains how to install, configure, and uninstall Colibri Server on Linux distributions (Debian, Ubuntu, RedHat, CentOS, Fedora).

Requirements

• Linux distribution with systemd

• Root/sudo access

• At least 500 MB free disk space

• glibc 2.31 or newer (Ubuntu 20.04+, Debian 11+, RHEL 8+)

• Optional: Memcached for caching (recommended for production)

Installation

Debian/Ubuntu (DEB Package)

Download

Download the latest .deb package from the GitHub Releases page:

curl -L -O https://github.com/corpus-core/colibri-stateless/releases/latest/download/colibri-server_1.0.0-1_amd64.deb

Install

# Install the package
sudo dpkg -i colibri-server_1.0.0-1_amd64.deb

# Install any missing dependencies
sudo apt-get install -f

# Verify installation
sudo systemctl status colibri-server

RedHat/CentOS/Fedora (RPM Package)

Download

curl -L -O https://github.com/corpus-core/colibri-stateless/releases/latest/download/colibri-server-1.0.0-1.x86_64.rpm

Install

# RHEL/CentOS 7
sudo rpm -ivh colibri-server-1.0.0-1.x86_64.rpm

# RHEL/CentOS 8+, Fedora
sudo dnf install colibri-server-1.0.0-1.x86_64.rpm

# Verify installation
sudo systemctl status colibri-server

What Gets Installed

The installer places files in the following locations:

• Binary: /usr/bin/colibri-server

• Configuration: /etc/colibri/server.conf

• Systemd Service: /etc/systemd/system/colibri-server.service

• Log Files: Accessible via journalctl -u colibri-server

• Data Directory: /var/lib/colibri/

• System User: colibri (created automatically)

Automatic Service Start

The Colibri Server is automatically installed as a systemd service and:

• Starts immediately after installation

• Starts automatically on system boot

• Runs as dedicated colibri user (non-root)

• Restarts automatically on failure

The service listens on port 8090 by default.

Configuration

Edit Configuration File

sudo nano /etc/colibri/server.conf

Key Configuration Parameters

# Server port
PORT=8090

# Blockchain (1=Mainnet, 11155111=Sepolia, 17000=Holesky)
CHAIN_ID=1

# RPC endpoints (comma-separated)
RPC=https://eth-mainnet.g.alchemy.com/v2/YOUR_KEY

# Beacon Chain API endpoints (comma-separated)
BEACON=https://lodestar-mainnet.chainsafe.io/

# Logging level (0=Error, 1=Warning, 2=Info, 3=Debug)
LOG_LEVEL=0

# Web UI (0=disabled, 1=enabled) - Only enable on trusted networks!
WEB_UI_ENABLED=0

Reload Configuration

After changing the configuration, restart the service:

sudo systemctl restart colibri-server

Enable Memcached (Optional, Recommended for Production)

Memcached significantly improves performance by caching external RPC/Beacon API requests.

Install and enable:

# Debian/Ubuntu
sudo apt-get install memcached
sudo systemctl enable memcached
sudo systemctl start memcached

# RedHat/CentOS/Fedora
sudo dnf install memcached
sudo systemctl enable memcached
sudo systemctl start memcached

Configure:

sudo nano /etc/colibri/server.conf
# Set: MEMCACHED_HOST=localhost
sudo systemctl restart colibri-server

Verify it's working:

# Check memcached is running
sudo systemctl status memcached

# Check server is using it
sudo journalctl -u colibri-server -n 20 | grep memcached

Enable Web UI (Optional)

To enable the web-based configuration interface:

1. Edit the config file:

   sudo nano /etc/colibri/server.conf

2. Set WEB_UI_ENABLED=1

3. Restart the service:

   sudo systemctl restart colibri-server

4. Access the UI at: http://localhost:8090/ui

⚠️ Security Warning: Only enable the Web UI on trusted local networks. It has no authentication and should never be exposed to the internet.

Service Management

Basic Commands

# Start service
sudo systemctl start colibri-server

# Stop service
sudo systemctl stop colibri-server

# Restart service
sudo systemctl restart colibri-server

# View status
sudo systemctl status colibri-server

# Enable auto-start on boot (default)
sudo systemctl enable colibri-server

# Disable auto-start on boot
sudo systemctl disable colibri-server

View Logs

# View all logs
sudo journalctl -u colibri-server

# Follow live logs
sudo journalctl -u colibri-server -f

# View last 100 lines
sudo journalctl -u colibri-server -n 100

# View logs since today
sudo journalctl -u colibri-server --since today

# View logs with timestamps
sudo journalctl -u colibri-server -o short-precise

Firewall Configuration

UFW (Ubuntu/Debian)

# Allow incoming connections on port 8090
sudo ufw allow 8090/tcp

# Check status
sudo ufw status

firewalld (RedHat/CentOS/Fedora)

# Allow incoming connections on port 8090
sudo firewall-cmd --permanent --add-port=8090/tcp
sudo firewall-cmd --reload

# Check status
sudo firewall-cmd --list-ports

iptables

sudo iptables -A INPUT -p tcp --dport 8090 -j ACCEPT
sudo iptables-save > /etc/iptables/rules.v4

Uninstallation

Debian/Ubuntu

# Remove package (keep configuration)
sudo apt-get remove colibri-server

# Remove package and configuration files
sudo apt-get purge colibri-server

# Remove dependencies
sudo apt-get autoremove

RedHat/CentOS/Fedora

# RHEL/CentOS 7
sudo rpm -e colibri-server

# RHEL/CentOS 8+, Fedora
sudo dnf remove colibri-server

Manual Cleanup (if needed)

If you want to remove all traces:

# Stop service
sudo systemctl stop colibri-server
sudo systemctl disable colibri-server

# Remove service file
sudo rm /etc/systemd/system/colibri-server.service
sudo systemctl daemon-reload

# Remove files
sudo rm /usr/bin/colibri-server
sudo rm -rf /etc/colibri
sudo rm -rf /var/lib/colibri

# Remove user
sudo userdel colibri

Troubleshooting

Service Won't Start

1. Check logs:

   sudo journalctl -u colibri-server -n 50

2. Common issues:

   • Port 8090 already in use → Change PORT in config file

   • Invalid RPC endpoints → Check network connectivity

   • Config file syntax error → Validate config file format

   • Permission issues → Check /var/lib/colibri ownership

3. Test manually:

   sudo -u colibri /usr/bin/colibri-server -c /etc/colibri/server.conf

Port Already in Use

Check what's using port 8090:

sudo ss -tulpn | grep 8090
# or
sudo lsof -i :8090

Either stop that process or change the port in /etc/colibri/server.conf.

Permission Denied Errors

Ensure the colibri user owns the data directory:

sudo chown -R colibri:colibri /var/lib/colibri
sudo chmod 755 /var/lib/colibri

SELinux Issues (RedHat/CentOS)

If SELinux is enabled and blocking the service:

# Check SELinux denials
sudo ausearch -m avc -ts recent

# Allow HTTP port (if needed)
sudo semanage port -a -t http_port_t -p tcp 8090

# Or temporarily disable SELinux for testing
sudo setenforce 0

Service Status

Check if the service is enabled and running:

systemctl is-enabled colibri-server
systemctl is-active colibri-server

Building from Source

If you want to build the package yourself:

Debian/Ubuntu

cd installer/linux
./build_deb.sh

# Output: ../colibri-server_1.0.0-1_amd64.deb

Requirements:

• dpkg-dev, debhelper, cmake, gcc, g++

RedHat/CentOS/Fedora

cd installer/linux
./build_rpm.sh

# Output: ~/rpmbuild/RPMS/x86_64/colibri-server-1.0.0-1.x86_64.rpm

Requirements:

• rpm-build, rpmdevtools, cmake, gcc, gcc-c++

Support

• Documentation: https://corpus-core.gitbook.io/specification-colibri-stateless

• Issues: https://github.com/corpus-core/colibri-stateless/issues

• Email: [e-mail]

License

The Colibri core library is licensed under the MIT License.

The server component is dual-licensed:

• PolyForm Noncommercial License 1.0.0 for non-commercial use

• Commercial License required for commercial use (contact [e-mail])