Book Image

VMware vSphere Troubleshooting

Book Image

VMware vSphere Troubleshooting

Overview of this book

VMware vSphere is the leading server virtualization platform with consistent management for virtual data centers. It enhances troubleshooting skills to diagnose and resolve day to day problems in your VMware vSphere infrastructure environment. This book will provide you practical hands-on knowledge of using different performance monitoring and troubleshooting tools to manage and troubleshoot the vSphere infrastructure. It begins by introducing systematic approach for troubleshooting different problems and show casing the troubleshooting techniques. You will be able to use the troubleshooting tools to monitor performance, and troubleshoot issues related to Hosts and Virtual Machines. Moving on, you will troubleshoot High Availability, storage I/O control problems, virtual LANS, and iSCSI, NFS, VMFS issues. By the end of this book, you will be able to analyze and solve advanced issues related to vShpere environment such as vcenter certificates, database problems, and different failed state errors.
Table of Contents (16 chapters)
VMware vSphere Troubleshooting
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Installing VMware vRealize Operations Manager
Power CLI - A Basic Reference
Index

HA agent host failed state


A vSphere master is considered to be in a failed state when it is unable to communicate with vCenter Server. This condition is not always reported correctly by vCenter Server, and at times, it can be generated falsely. The actual condition can be caused by a vSphere HA master when it is not able to reach to its heartbeat datastores. It is resolved automatically if a vSphere host is in a temporary failed state.

The possible cause could be a failure in accessing the heartbeat datastores. The heartbeat datastores' reachability can also be caused by network errors. You can apply the network and storage troubleshooting skills you have learned in previous chapters to resolve vSphere host in a failed state.