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

Managing ESXi SSL certificates


The VMCA, in vSphere 6, provisions a signed certificate to each ESXi host. The certificate specifies the VMCA as the root certificate authority by default. The certificate is provisioned when the ESXi host is added to vCenter Server, or installed or upgraded to ESXi 6.0 or later.

Renewing VMCA certificates

If the VMCA is a subordinate certificate authority, it is allowed to sign certificates for the ESXi hosts. This can be done using the vSphere Web Client. To do so, log into the vSphere Web Client and navigate to the Hosts and Cluster inventory view. Right-click on the ESXi host, and select Certificates | Renew Certificate.

This will bring up the Renew Certificate dialog; click on the Yes button.

This can also be done without making the VMCA a subordinate certificate authority. This process would need to be before the certificate expires or if the hostname is changed. However, if the certificate has already expired, just disconnect and remove the ESXi host...