Highly Available (HA) Linux

Zwiegnet builds enterprise-grade high-availability Linux infrastructure that eliminates single points of failure and ensures continuous operation — even under extreme traffic, regulatory requirements, or security demands.

We specialize in solutions for:

• High-Traffic Applications – Web, API, and e-commerce platforms handling millions of requests with zero downtime
• Regulated Industries – Healthcare, finance, government — meeting PCI, HIPAA, NIST, and other compliance standards
• High-Security Environments – Hardened clusters with encrypted replication, strict access controls, and audit-ready logging

Our HA services include:

• Active/Passive & Active/Active Clustering – Pacemaker + Corosync for automatic failover of services, virtual IPs, and resources
• Distributed Storage Replication – DRBD for block-level synchronous/asynchronous replication across nodes or sites
• Load Balancing – HAProxy and NGINX for Layer 4/7 traffic distribution, health checks, SSL termination, and session persistence
• Database High Availability – PostgreSQL streaming replication, Patroni clusters, MySQL Galera, automatic failover
• Multi-Site & Geo-Redundancy – Cross-data-center replication, DNS-based failover, and disaster recovery planning
• Container Orchestration – Kubernetes clusters with self-healing, rolling updates, and persistent storage
• Monitoring & Alerting – Integrated health monitoring with automatic recovery actions

All designs include rigorous testing, documented failover procedures, and ongoing support. We ensure your system meets 99.99%+ uptime requirements with measurable SLAs.

Wisconsin-based Linux HA specialists since 2009 — trusted by organizations that cannot afford downtime.