Repair Publisher with subscriber

[SuperRaton]

We have a problem with one of our sites.

We have one publisher and one subscriber. The publisher hard drive crashed and we dont find a backup.

Do you know a way to install again the publisher and recover all the database with subscriber DB???

 

[whykap]

There is no way to restore call manager from a subscriber. Without a back up you must rebuild the publisher and restore the configuration manually by looking into the subscriber configuration.

 

[CCIECCNA]

BARS

 

[whykap]

You can't use BARS to back up a sub and restore to a publisher. it does not work that way.

 

[CCIECCNA]

I disagree, BARS is a tar file and you can restore to any box.

 

[CCIECCNA]

I have tested restoring to both subscriber and publisher.
Also had the “smoking hole” issue and restored using BARS over a VPN to a site 1200 miles away. Yes it works as intended.

 

[whykap]

Let me get this right.
You are saying you can back up your subscriber ONLY (since superRaton's publisher does not exist at this point), and use that back up to restore a failed publisher?

 

[CCIECCNA]

when you use BARS you are pulling off the subscriber.
And yes...you got it right.

 

[SuperRaton]

Thanks for the answers.

I agree with whykap, i thought it was not possible to use the BARS backup of the subscriber, but i never tried.

Are you sure that you used the subscriber backup to restore the publisher???

 

[whykap]

SuperRaton,
i was wondering if you were ever abel to restore a backup to a pub from a subscriber as CCIECCNA had suggested.

let me know if you get a chance.

 

[SuperRaton]

sorry, i fprgot about the thread...

whykap, i can tell you... it is impossible. BARS does not work and i tried even changing the IPs in the subscriber backup manually.

 

[whykap]

Didn't think that would work as it defeats every architectural rule of call manager.

See below a note from cco:

For subscriber databases that are configured for backup, BARS backs up only TFTP files and CDR/CMR files

The Cisco Unified CallManager publisher database contains all the information that you configure with Cisco Unified CallManager Administration, and the database updates each time that you make a change. Cisco strongly recommends that you make a backup of the Cisco Unified CallManager database, configuration, and directory information by using BARS every time that you make changes in Cisco Unified CallManager Administration. Each Cisco Unified CallManager cluster contains only one publisher database.

For more info read this link:

http://www.cisco.com/univercd/cc/td/doc/product/voice/backup/bars40/ag-4012/overvw.htm#wp54628

Thanks for replying and have a great day.

 

[pmoorey]

Hi,

I can also confirm this is the case as my colleague recently opened a TAC request asking that same specific question. NO is the answer!

Peter
CCNA, Cisco Qualified Specialist