best practices copy-cluster multi-node

Pietro_La_Torre

I have a multi-node cluster with 3 nodes, I'd like to execute a copy-cluster to a new cluster with same topology (as said in copy-cluster requirements).
What are the best practices to perform this action?
There are critical issues that must be evaluated first?

thanks,
Pietro

Rahul_Choudhary

Hi Pietro

You can use the vbr.py utility to copy the entire database to another HP Vertica cluster. This feature makes it easy to perform tasks such as copying a database between a development and a production environment. Copying your database to another cluster is essentially a simultaneous backup and restore — the data is backed up from the source database cluster and restored to the destination cluster in a single operation.

The directory locations for the HP Vertica catalog , data, and temp directories must be identical on the source and target database.

Best practices to perform this includes:

Configure the target to allow the source database to connect to it and restore the database. The target cluster must:

• Have the same number of nodes the source cluster.
• Have a database with the same name as the source database. The target database can be completely empty.
• Have the same node names as the source cluster. The nodes names listed in the nodes system tables on both clusters must match.
• Be accessible from the source cluster. You may need to add the host names of the target cluster to the hosts file of the source cluster. 
• Have the same database administrator account, and all nodes must allow a database administrator of the source cluster to login through SSH without a password.
• Have adequate disk space for the vbr.py --task copycluster command to complete.
• You must use a full database backup.
  
• The target cluster must be stopped before you invoke copycluster.
  

Kindly go through the below documented Vertica doc. for detailed info on this.

Administrator's Guide > Backing Up and Restoring the Database > Copying the Database to Another Cluster

Link for the same:

https://my.vertica.com/docs/6.1.x/HTML/index.htm#16027.htm

Regards

Rahul Choudhary