High-Availability on Pi Stack

Keepalived vs Corosync + Pacemaker: Self-Hosted High Availability Clustering Guide 2026

Tue, 21 Apr 2026 00:00:00 +0000

When a single server handles all traffic for a critical service, one hardware failure, kernel panic, or network partition takes your entire application offline. High availability (HA) clustering eliminates this single point of failure by running services across multiple nodes that automatically detect failures and redirect traffic to healthy members.

dnsdist vs PowerDNS Recursor vs Unbound: Self-Hosted DNS Load Balancing Guide 2026

Sun, 19 Apr 2026 00:00:00 +0000

DNS load balancing sits at the foundation of every resilient self-hosted infrastructure. Whether you’re distributing traffic across multiple authoritative name servers, balancing resolver queries to reduce latency, or protecting upstream DNS infrastructure from query floods — the right tool makes the difference between a responsive network and a cascading failure.

Patroni vs Galera Cluster vs repmgr: Best Self-Hosted Database High Availability 2026

Fri, 17 Apr 2026 00:00:00 +0000

Why Self-Host Database High Availability?

Every production system eventually faces the same reality: a single database node is a single point of failure. When that node crashes, your application goes down, transactions are lost, and users walk away. The traditional answer has been to pay a premium for managed database services that handle replication and failover automatically. But managed services come with steep costs, opaque pricing models, and limited control over how your data is actually protected.

Self-Hosted Load Balancers: Traefik vs HAProxy vs Nginx for High Availability 2026

Fri, 17 Apr 2026 00:00:00 +0000

When you self-host applications, a load balancer sits between your users and your backend services, distributing traffic across multiple instances to ensure reliability, scalability, and zero-downtime deployments. While reverse proxies handle routing at the edge, load balancers are specifically engineered for traffic distribution, health monitoring, and failover at scale.