Back up your entire cluster periodically to minimize data inconsistency when a restore is required.
Backing up your data should be a regular process on your cluster to ensure that you do not lose information in the event of a serious hardware or installation failure.
There are a number of methods for performing a backup:
cbbackup command enables you to back up a single node, single buckets, or the entire cluster into a flexible backup structure that allows for restoring the data into the same, or different, clusters and buckets. All backups can be performed on a live cluster or node. The command
cbbackup is the most flexible and recommended backup tool.
Using file copies
A running or offline cluster can be backed up by copying the files on each node. With this method, you can only restore to a cluster with the identical configuration.
Note: Due to the active nature of Couchbase Server, it is impossible to create a complete in-time backup and snapshot of the entire cluster. Because data is always being updated and modified, it is impossible to take an accurate snapshot.
Note: You must back up and restore your entire cluster to minimize any data inconsistencies. Couchbase is always per-item consistent, but does not guarantee total cluster consistency or in-order persistence.