Book Image

Linux for Networking Professionals

By : Rob VandenBrink
1 (1)
Book Image

Linux for Networking Professionals

1 (1)
By: Rob VandenBrink

Overview of this book

As Linux continues to gain prominence, there has been a rise in network services being deployed on Linux for cost and flexibility reasons. If you are a networking professional or an infrastructure engineer involved with networks, extensive knowledge of Linux networking is a must. This book will guide you in building a strong foundation of Linux networking concepts. The book begins by covering various major distributions, how to pick the right distro, and basic Linux network configurations. You'll then move on to Linux network diagnostics, setting up a Linux firewall, and using Linux as a host for network services. You'll discover a wide range of network services, why they're important, and how to configure them in an enterprise environment. Finally, as you work with the example builds in this Linux book, you'll learn to configure various services to defend against common attacks. As you advance to the final chapters, you’ll be well on your way towards building the underpinnings for an all-Linux datacenter. By the end of this book, you'll be able to not only configure common Linux network services confidently, but also use tried-and-tested methodologies for future Linux installations.
Table of Contents (20 chapters)
1
Section 1: Linux Basics
4
Section 2: Linux as a Network Node and Troubleshooting Platform
8
Section 3: Linux Network Services

Chapter 10 – Load Balancer Services for Linux

  1. If you are in a situation where your total load might be reaching the capacity of the load balancer, a DSR solution means that only the client to server traffic needs to be routed through the load balancer. This is especially impactful as most workloads have much more return traffic (server to client) than send traffic (from client to server). This means that changing to a DSR solution can easily reduce the traffic through the load balancer by 90%.

    This performance is less of a consideration if smaller load balancers are matched 1:1 with each discrete workload that needs to be balanced. Especially in a virtualized environment, adding CPU and memory resources to a VM-based load balancer is also much simpler than the matching hardware upgrade might be in a legacy, hardware-based appliance situation.

    A DSR load balancer also needs a fair bit of server and network "tinkering" to make all the pieces work. Once it works, figuring...