Solved

Restore Distributed Switch on new vCenter if old vCenter is crashed with no backup

Posted on 2016-08-31
8
144 Views
Last Modified: 2016-09-26
Is it possible technically ..to restore my dv switch if i lost[crashed] my old vc with no more backup of dv swicth ?

is there any limitation to version compatibility ?

Can we restore this config from any of Host or somewhere else it is saved ?

Please share best practice to restore dv switch in such case .

Thanks
0
Comment
Question by:patron
8 Comments
 
LVL 28

Expert Comment

by:asavener
ID: 41780656
If you've had to build a new vCenter and attach to the affected hosts, then the DV switch configuration is gone.

The hosts should still have their original configuration, though, so they will continue to pass traffic and existing VMs will continue to run.  You won't be able to move machines between hosts, or change guest network configurations.

To fix this, you will need to create a new DV switch, add a host to it, reconfigure your VLANS, etc.  Then migrate some guests onto the that host and move on to the next host.  Rinse and repeat until all of the hosts are on the new DV switch.
0
 
LVL 28

Accepted Solution

by:
asavener earned 250 total points (awarded by participants)
ID: 41780800
I had another thought....  Is the SQL database on a separate server?

You could likely install a fresh vCenter into a different database, and then modify the DSN to point to the original SQL instance.  It would then pick up all of the settings from the original installation.
0
 
LVL 39

Assisted Solution

by:Aaron Tomosky
Aaron Tomosky earned 125 total points (awarded by participants)
ID: 41780809
last time I had to do this was with a 5.5 VCSA and I had to make standard switches, migrate to those, then migrate to new DV Switches. YMMV going direct from dVS to dVS
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 62

Assisted Solution

by:gheist
gheist earned 125 total points (awarded by participants)
ID: 41782351
To start with - all ESXi-s keep good configuration. And all your VMs stay running.

Now configure vcenter to access management interfaces
And follow aaron's path from then on.
0
 
LVL 19

Expert Comment

by:compdigit44
ID: 41785210
asavener makes a very good point if your DB server is on another server you just need to do a fresh install and point to the old DB.

On another note, was the vcenter server physical or virtual?
0
 
LVL 1

Author Comment

by:patron
ID: 41787040
have diff db and vc vm.so if my vc is crashed ,I ll prepare new vc on another vm n point it to old db?
will that work simply without any more config?
will that restore all my dv switch config back or if any more config required?
0
 
LVL 28

Assisted Solution

by:asavener
asavener earned 250 total points (awarded by participants)
ID: 41787715
Yes, that should work.  All configuration data is kept in the database.

It's basically the same as migrating to a different SQL server.

I suggest that you first take a backup of the current vCenter database, so that you can always get back to this state.

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2003493
0
 
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 41815714
Reusing the DB server is what saved the dvswitch configuration. Always backup your DB!
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
When rebooting a vCenters 6.0 and try to connect using vSphere Client we get this issue "Invalid URL: The hostname could not parsed." When we get this error we need to do some changes in the vCenter advanced settings to fix the issue.
Advanced tutorial on how to run the esxtop command to capture a batch file in csv format in order to export the file and use it for performance analysis. He demonstrates how to download the file using a vSphere web client (or vSphere client) and exp…
This video shows you how easy it is to boot from ISO images for virtual machines with the ISO images stored on a local datastore on the ESXi host.

820 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question