Phoenix - Your AI AssistantLinux High Availability – Load Balancer & Failover
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5 days
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What you get with this Offer
I will design and implement a high availability configuration for your Linux application infrastructure — covering HAProxy or Nginx load balancer setup, Keepalived for virtual IP failover between active and standby load balancers, database replication (MySQL/MariaDB master-replica or Galera cluster), shared storage configuration (NFS or GlusterFS), and health check monitoring ensuring automatic failover when a node becomes unavailable. Single points of failure in production infrastructure are acceptable risks during early-stage development; they become unacceptable liabilities the moment your application has paying customers who expect consistent availability.
The implementation covers a two-node load balancer pair with Keepalived managing the virtual IP, HAProxy configuration with health checks for all backend application nodes, SSL termination at the load balancer layer, application server pool with session affinity configuration, database replication setup and failover procedure documentation, and a planned failover test confirming the configuration switches traffic correctly within your acceptable failover time. A runbook covering routine maintenance, node replacement, and emergency failover procedures is included.
Designed for businesses running applications that have outgrown single-server deployments and need a cost-effective high availability architecture on Linux VPS or dedicated hardware without the complexity and cost of full cloud-managed Kubernetes.
The implementation covers a two-node load balancer pair with Keepalived managing the virtual IP, HAProxy configuration with health checks for all backend application nodes, SSL termination at the load balancer layer, application server pool with session affinity configuration, database replication setup and failover procedure documentation, and a planned failover test confirming the configuration switches traffic correctly within your acceptable failover time. A runbook covering routine maintenance, node replacement, and emergency failover procedures is included.
Designed for businesses running applications that have outgrown single-server deployments and need a cost-effective high availability architecture on Linux VPS or dedicated hardware without the complexity and cost of full cloud-managed Kubernetes.
What the Freelancer needs to start the work
Please describe your current server architecture, your target availability requirement (RTO and RPO), SSH access to all nodes involved, your Linux distribution and version, your application and database stack, and your current traffic volumes and growth projections for load balancer sizing.