A10 Thunder ADC vs Linux Virtual Server

A10 Thunder ADC is an application delivery controller and advanced load balancer for distributing workloads, maintaining server availability, protecting applications, and accelerating content delivery. It balances traffic at Layers 4–7, offers customizable service health checks, and supports aFleX scripting. Global Server Load Balancing can direct traffic across data centers and clouds for continuity and localized responses. Deployment options include hardware, virtual appliances, cloud, bare metal, and containers. Performance capabilities include caching, TCP optimization, and TLS/SSL offloading; security features include single sign-on, CAPTCHA, web and DNS firewalls, and DDoS protection. The REST-based aXAPI interface is described as providing 100% API coverage. Named integrations include Terraform and Ansible for CI/CD, Kubernetes service discovery through TKC or HashiCorp NIA with Consul, and Prometheus/Grafana monitoring. Pricing is on request. A 30-day trial license is listed for vThunder and public cloud offerings; container trial details require contacting A10 Sales. The container edition lists OpenShift 4.16 and minimum requirements of 4 vCPU and 16 GB memory.

Linux Virtual Server (LVS) turns a cluster of real Linux servers into one virtual server for users. Its IPVS component performs layer 4 balancing in the Linux kernel, directing TCP and UDP requests sent to a virtual service IP toward servers behind it. Supported forwarding methods are NAT, FULLNAT, tunneling, and direct routing. The project lists web, cache, mail, FTP, media, and VoIP services as applications. Capacity can be changed by adding or removing cluster nodes. Failure detection can identify node or daemon problems and reconfigure the system for availability. Keepalived checks server-pool state at layers 3, 4, and 5 and tells the kernel to remove a failed server. KTCPVS supplies application-level balancing but is under development. LVS is free GPL-licensed software for Linux and self-hosted use. Administration uses ipvsadm, with documentation for configurations, scheduling, high availability, and DoS defense.