Book Image

Learning VMware vSphere

By : Rebecca Fitzhugh, Abhilash G B
Book Image

Learning VMware vSphere

By: Rebecca Fitzhugh, Abhilash G B

Overview of this book

Computer virtualization is a method to enable the running of multiple application workloads on a machine to achieve efficient utilization and reduce the number of physical machines in a data center. This has now become the foundation of many modern day data centers. What began as a technology to virtualize x86 architecture has now grown beyond the limits of a server’s hardware and into the realm of storage and network virtualization. VMware is currently the market leader in developing data center virtualization solutions. This book goes into the details of designing and implementing VMware solutions that form the foundation of a VMware infrastructure. The book begins by introducing you to the concepts of server virtualization followed by the architecture of VMware’s hypervisor – ESXi and then by its installation and configuration. You then learn what is required to manage a vSphere environment and configure advanced management capabilities of vCenter. Next you are taken through topics on vSphere Networking, Storage, ESXi Clustering, Resource Management and Virtual Machine Management. You will then be introduced to SSL Certificate Management and its use in a vSphere environment. Finally, you will learn about the lifecycle management of a vSphere environment by effectively monitoring, patching and upgrading vSphere components using Update Manager. By the end of the book, you will know how to use VMware’s vSphere suite of components to lay the foundation of a modern day virtual infrastructure.
Table of Contents (18 chapters)
Learning VMware vSphere
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

The VMkernel network interface (vmk)


Much like the virtual machines that run on the ESXi hosts, the vmkernel would also need to interface with the network for a variety of purposes. These interfaces act as network node points for the vmkernel. The very first vmkernel interface - vmk0 is created during the installation of ESXi. This interface is the management interface for the ESXi host. VMware allows creating a maximum of 256 (vmk0 - vmk255) vmkernel interfaces on an ESXi host. The use cases include interfaces for management traffic, VMotion traffic, FT traffic, Virtual SAN traffic, iSCSI, and NAS interfaces. Since each interface is a network node point, it will need an IP configuration and a MAC address. The first vmkernel interface (vmk0) will procure the MAC address of the physical NIC it is connected to. The remaining interfaces pick up the VMware OUI MAC address generated by the ESXi host. We will learn more about how VMware handles the MAC address in the next section.