File Based Group Provider#
Presto can map user names onto groups for easier access control and resource group management. Group file resolves group membership using a file on the coordinator.
Group File Configuration#
Enable group file by creating an etc/group-provider.properties
file on the coordinator:
group-provider.name=file
file.group-file=/path/to/group.txt
The following configuration properties are available:
Property |
Description |
|---|---|
|
Path of the group file. |
|
How often to reload the group file.
Defaults to |
Group Files#
File Format#
The group file contains a list of groups and members, one per line, separated by a colon. Users are separated by a comma.
group_name:user_1,user_2,user_3