A Low Cost Two-Tier Architecture Model For High Availability Clusters Application Load Balancing

TL;DR

This paper introduces a cost-effective two-tier architecture for high availability clusters with load balancing, integrating shared storage and eliminating NFS servers by embedding their functions within cluster nodes.

Contribution

It presents a novel low-cost design that omits dedicated NFS servers by integrating their functionalities into cluster nodes using RHCS and HA proxy, enhancing scalability and fault tolerance.

Findings

Achieves high availability despite component failures

Reduces hardware and investment costs

Maintains steady service with simplified architecture

Abstract

This article proposes a design and implementation of a low cost two-tier architecture model for high availability cluster combined with load-balancing and shared storage technology to achieve desired scale of three-tier architecture for application load balancing e.g. web servers. The research work proposes a design that physically omits Network File System (NFS) server nodes and implements NFS server functionalities within the cluster nodes, through Red Hat Cluster Suite (RHCS) with High Availability (HA) proxy load balancing technologies. In order to achieve a low-cost implementation in terms of investment in hardware and computing solutions, the proposed architecture will be beneficial. This system intends to provide steady service despite any system components fails due to uncertainly such as network system, storage and applications.