Feature Flags with Unleash

Deploy Unleash for self-hosted feature flag management with gradual rollouts, A/B testing, and kill switches. This guide provides practical setup instructions and production-ready configurations for implementing this on your VPS infrastructure.

Installation and Setup

# Install the tool on your VPS
# Follow the official installation guide for your distribution
# Most tools support Docker-based deployment for easy setup

# Quick start with Docker
docker pull feature-flags-unleash:latest
docker run -d --name feature-flags-unleash -p 8080:8080 feature-flags-unleash:latest

# Or install natively
curl -fsSL https://install.example.com | sh

Core Configuration

The primary configuration covers feature toggles and activation strategies setup. These form the foundation of a working deployment:

# Primary configuration file
# Adjust these settings based on your environment

# Enable core features
feature toggles:
  enabled: true
  interval: 300  # seconds

# Configure activation strategies
activation strategies:
  enabled: true
  targets:
    - production
    - staging

# Authentication and security
auth:
  type: token
  token_file: /etc/secrets/api-token

gradual rollout Configuration

Setting up gradual rollout is essential for production reliability:

# Configure gradual rollout
# This ensures your setup handles production workloads correctly

# Key settings for gradual rollout:
# 1. Set appropriate resource limits
# 2. Configure health checks
# 3. Enable logging and monitoring
# 4. Set up backup and recovery

resources:
  limits:
    cpu: "2"
    memory: "2Gi"
  requests:
    cpu: "500m"
    memory: "512Mi"

healthCheck:
  enabled: true
  interval: 30s
  timeout: 10s

SDK integration Integration

Integrating SDK integration provides visibility into system health and performance:

# Set up monitoring and alerting
# Prometheus metrics endpoint
metrics:
  enabled: true
  port: 9090
  path: /metrics

# Alert rules
alerts:
  - name: HighErrorRate
    condition: error_rate > 0.05
    duration: 5m
    severity: critical
    notify:
      - slack
      - email

# Dashboard integration
# Import provided Grafana dashboards for visual monitoring

metrics and analytics

• Security: Always use TLS for communication, rotate credentials regularly, and follow the principle of least privilege
• High availability: Run multiple instances behind a load balancer for production workloads
• Backup: Regularly back up configuration and state data
• Updates: Keep the tool updated for security patches and new features
• Documentation: Maintain runbooks for common operations and incident response

Production Deployment

# Systemd service for production
[Unit]
Description=Feature Flags with Unleash
After=network.target docker.service

[Service]
Type=simple
User=appuser
ExecStart=/usr/local/bin/feature-flags-unleash serve --config /etc/feature-flags-unleash/config.yaml
Restart=always
RestartSec=5
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

# Enable and start
sudo systemctl enable --now feature-flags-unleash

Summary

This tool streamlines feature toggles and activation strategies workflows for DevOps teams. Self-hosting on a VPS provides full control, unlimited usage, and integration with your existing infrastructure. Start with the basic configuration, add monitoring early, and gradually adopt advanced features like SDK integration and metrics and analytics as your team matures its practices.