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 VMkernel interfaces


In this section, we will see how to troubleshoot VMkernel interfaces. A VMkernel interface is a networking interface used in VMware infrastructure for Fault Tolerance, vMotion and IP storage. In vSphere hosts VMkernel interface is responsible for handling vMotion, network connectivity and IP storage. In this section we will see how to troubleshoot VMkernel interfaces using the following commands:

  • Confirm VLAN tagging

  • Ping to check connectivity

  • Vicfg-vmknic

  • Escli network ip interface for local configuration

  • Escli network ip interface list

  • Add or remove

  • Set

  • Escli network ip interface ipv4 get

You should know how to use these commands to test if everything is working. You should be able to ping to ensure connectivity exists.

We will use the vicfg-vmknic command to configure vSphere VMkernel NICs. Let's create a new VMkernel NIC in a vSphere host using the following steps:

  1. Log in to your VMware vSphere CLI.

  2. Type the following command to create a new VMkernel NIC:

    vicfg...