8 articles
Step-by-step guide to building a highly available load balancer pair with HAProxy and Keepalived — covering the full stack from VIP configuration to health checks, stats, and SSL termination.
How to configure Keepalived for automatic failover using VRRP — setting up master/backup pairs, virtual IPs, health-check scripts, and combining it with HAProxy or Nginx for zero-downtime load balancer HA.
Configure HAProxy health checks at TCP, HTTP, and application layers with automatic failover, backup servers, and alerting for production reliability.
Set up a highly available load balancer pair using Keepalived VRRP with a shared virtual IP that automatically fails over between two nodes.
Configure Nginx upstream load balancing with round robin, least connections, and IP hash strategies including health checks and failover.
Configure HAProxy for HTTP and TCP load balancing — installation, frontends, backends, health checks, ACLs, SSL termination, and the stats dashboard.
Implement automatic failover for HAProxy and Nginx using Keepalived with VRRP — virtual IPs, health checks, and split-brain prevention.
Deploy Vault for production — HA with Raft storage, auto-unseal with cloud KMS, audit logging, performance tuning, backup strategies, and disaster recovery.