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

Troubleshooting NFS issues


NFS issues are very much similar to iSCSI issues. Some of the common problems and how these can be resolved effectively have been discussed here.

If you are having an error of denying mount request by an NFS server, make sure the NFS server has published the exports and appropriate permissions are set up for the client to access the exports.

In your NFS server, make sure the no_root_squash option exists in /etc/exports; alternatively, follow your NAS manual to set it up. If it is not set up, you will get an access error. It will get more complicated when you will be able to create a datastore but unable to create a virtual machine. In some NAS, anon=0 is used in /etc/exports instead of using no_root_squash.

Always make sure the portmap and NFS services are running if you are facing mount fail problem.

Verify the firewall settings: the NFS client requires access to TCP ports 111, 896, and 2049 to be opened on your NFS server. You can troubleshoot it using the script...