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  • Book Overview & Buying vCenter Troubleshooting
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vCenter Troubleshooting

vCenter Troubleshooting

By : Chuck Mills
4 (3)
Buy this Book
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vCenter Troubleshooting

vCenter Troubleshooting

4 (3)
By: Chuck Mills
Buy this Book

Overview of this book

The book is designed for the competent vCenter administrator or anyone who is responsible for the vSphere environment. It can be used as a guide by vSphere architects and VMware consultants for a successful vSphere solution. You should have good knowledge and an understanding of core elements and applications of the vSphere environment.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. vCenter Upgrades and Migrations
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1. vCenter Upgrades and Migrations
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Best practices for upgrading to vCenter Server
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New and updated information in vSphere 6
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Migrating vCenter from SQL Express to SQL Server
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Deploying vCenter Server Appliance with no DHCP server
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Upgrading from Windows vCenter 5.1 to vCenter Server Appliance
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Summary
2
2. Working with the vCenter Database
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2. Working with the vCenter Database
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Changing the vCenter database location
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Growing the vCenter Server database
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Reinitializing the vCenter Server database
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Fixing the vCenter Server service and database connection issues
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Recovering from an improper shutdown of VCSA
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Resolving low and no space problems
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Resources for other database issues
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Summary
3
3. Setting Access and Permissions
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3. Setting Access and Permissions
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Introducing vCenter Single Sign-On
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Unlocking and resetting the SSO administrator password
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Adding additional Active Directory authentication in vCenter SSO 5.5
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Permissions for vCenter and vCenter Operations Manager
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Tips for troubleshooting vCenter permissions
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Summary
4
4. Monitoring and Performance Considerations
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4. Monitoring and Performance Considerations
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Overview of disk I/O performance
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Pinpointing the most I/O-intensive virtual machines
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Changing Java memory usage for performance
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Fixing issues with performance data that do not appear in vCenter
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Summary
5
5. Working with Storage
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5. Working with Storage
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Deleting virtual machine snapshots that have locked files
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Unmounting a LUN from ESXi hosts
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Using vCenter operations for troubleshooting storage devices
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Summary
6
6. Solving Some Not-so-common vCenter Issues
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6. Solving Some Not-so-common vCenter Issues
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Solving the problem of no objects in vCenter
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Fixing the VPXD must be stopped to perform this operation message
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Removing unwanted plugins in vSphere
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Summary
7
7. Backup and Recovery
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7. Backup and Recovery
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Procedure for backing up vCenter SSO 5.5
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Summary
8
8. Additional Support Methods and Tools
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8. Additional Support Methods and Tools
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VMware vCenter Support Assistant
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Requirements for the vCenter Support Assistant
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Installing and configuring the vCenter Support Assistant
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VMware Labs Flings
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Finding resources to support your VMware environment
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Summary
9
9. Troubleshooting Methods
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9. Troubleshooting Methods
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Troubleshooting workflow
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Summary
10
Index
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Index

Unmounting a LUN from ESXi hosts

This section will show you how to unmount a LUN or detach a datastore from multiple VMware ESXi 5.x hosts. The methods discussed here include how to perform this one host at a time and how to accomplish this for multiple hosts at the same time. You will be provided with steps to unmount a LUN from an ESXi 5.x host, which will include unmounting the filesystem along with detaching the device.

The first method is for one host at a time, and the steps must be performed for each of your ESXi hosts.

Note

Note that this is for the 5.x host only. Removing a LUN from an ESXi/ESX 4.x host is very complex. For information on unmounting a datastore in ESXi/ESX 4.x, see Removing a LUN containing a datastore from VMware ESXi 4x and ESX 4.x at http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1029786.

Before unmounting a LUN, make sure the following issues are addressed:

  • If the LUN in use is used as a VMFS datastore, you need...

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