Couchbase Server stores data files (data, views and secondary index) under.
The disk path for the database and map reduce index files is set during the initial setup of the server node. The default disk path is typically used for development purposes only.
If the server node is used for production, configure a different disk path.
|Mac OS X||~/Library/Application Support/Couchbase/var/lib/couchbase/data|
Changing the Data File Path
The disk path where the data and map reduce index files are stored on nodes running the Data service; it cannot be changed on a running server. To change the disk path, remove the node from the cluster, configure it with the new path, and then add back to the cluster. The data file path can be changed for each node with the Couchbase Web Console during setup, with REST API, or CLI.
Once a node or a cluster has already been set up and is storing data, the path cannot be changed while the node is a part of a running cluster.
The quickest and easiest method is to provision a new node with the configured correct disk path, and then use swap rebalance to add the new node in while taking the old node out. This upgrade process ensures that the cluster performance is not impacted.
To change the disk path by replacing a node (with swap rebalance):
- Set up a new node with a different disk path.
- Swap rebalance the new node for the existing node.
- Repeat the process for each node in the cluster.
To change the disk path of an existing node (without swap rebalance):
- Remove the node from the cluster and rebalance.
- Change the path on the removed node either via the REST API or using the Couchbase CLI.
- Re-add the node back to the cluster and rebalance.
To change the disk path on multiple nodes, swap out each node and change the disk path individually.
couchbase-cli node-init -c 192.168.0.1:8091 -u Administrator -p password --node-init-data-path=new_path