HDFS native driver¶
HDFS native driver is a plugin based on the OpenStack manila service, which uses Hadoop distributed file system (HDFS), a distributed file system designed to hold very large amounts of data, and provide high-throughput access to the data.
A manila share in this driver is a subdirectory in hdfs root directory. Instances talk directly to the HDFS storage backend with ‘hdfs’ protocol. And access to each share is allowed by user based access type, which is aligned with HDFS ACLs to support access control of multiple users and groups.
The storage backend and manila hosts should be in a flat network, otherwise, the L3 connectivity between them should exist.
Create HDFS share
Delete HDFS share
Allow HDFS Share access * Only support user access type * Support level of access (ro/rw)
Deny HDFS Share access
Create share from snapshot
Install HDFS package, version >= 2.4.x, on the storage backend
To enable access control, the HDFS file system must have ACLs enabled
Establish network connection between the manila host and storage backend
Manila driver configuration¶
share_driver = manila.share.drivers.hdfs.hdfs_native.HDFSNativeShareDriver
- hdfs_namenode_ip = the IP address of the HDFS namenode, and only single
namenode is supported now
hdfs_namenode_port = the port of the HDFS namenode service
hdfs_ssh_port = HDFS namenode SSH port
hdfs_ssh_name = HDFS namenode SSH login name
- hdfs_ssh_pw = HDFS namenode SSH login password, this parameter is not
necessary, if the following hdfs_ssh_private_key is configured
hdfs_ssh_private_key = Path to the HDFS namenode private key to ssh login
This driver does not support network segmented multi-tenancy model. Instead multi-tenancy is supported by the tenant specific user authentication
Only support for single HDFS namenode in Kilo release