The Roles file enables you to define configuration information for the nodes in your cluster.
Each element on an entry in a roles file is separated by a space. Each entry consists of these elements:
- The host name or IP address of a node in the cluster
- A comma-delimited list of packages to install on that node
- A comma-delimited list of disks and disk partitions available on that node for MapR's use
Sample Roles File
This sample roles file sets up a five-node cluster that uses the M5 license level to run multiple NFS nodes.