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

Network partitioned or network isolated errors


It may so happen that your vSphere host is randomly or permanently turning into red and you are getting one of the following messages in your alarm list: vSphere HA detected a network-partitioned host; Status = Red or vSphere HA detected that host crimv1esx001.linxsol.com is in a different network partition than the master Cluster-ML-FL in DataCenter017-Milan.

As suggested by VMware, this type of problem can be caused when your vCenter Server is able to communicate with the vSphere hosts by using heartbeat datastores but the communication between vCenter Server and vSphere hosts is disconnected on the management network. In this condition, a vSphere host is not considered as an isolated host.

While a vSphere host is considered to be in a network isolated state when it is unable to ping the configured isolation addresses and the vSphere HA agents on the other cluster hosts are unable to communicate with its vSphere host HA agent. VMware HA then...