Load Balancer Setup

Load Balancer Setup

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Deploy and configure load balancers to distribute traffic across multiple backend servers, ensuring high availability, fault tolerance, and optimal resource utilization across your infrastructure.

When to Use

• Multi-server traffic distribution
• High availability and failover
• Session persistence and sticky sessions
• Health checking and auto-recovery
• SSL/TLS termination
• Cross-region load balancing
• API rate limiting at load balancer
• DDoS mitigation

Quick Start

Minimal working example:

# /etc/haproxy/haproxy.cfgglobal    log stdout local0    log stdout local1 notice    maxconn 4096    daemon
    # Security    tune.ssl.default-dh-param 2048    ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256    ssl-default-bind-options ssl-min-ver TLSv1.2
defaults    log global    mode http    option httplog    option denylogin    option forwardfor    option http-server-close
    # Timeouts    timeout connect 5000    timeout client 50000    timeout server 50000
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Best Practices

✅ DO

• Implement health checks
• Use connection pooling
• Enable session persistence when needed
• Monitor load balancer metrics
• Implement rate limiting
• Use multiple availability zones
• Enable SSL/TLS termination
• Implement graceful connection draining

❌ DON'T

• Allow single point of failure
• Skip health check configuration
• Mix HTTP and HTTPS without redirect
• Ignore backend server limits
• Over-provision without monitoring
• Cache sensitive responses
• Use default security groups
• Neglect backup load balancers