authunix_create - Linux
Overview
authunix_create is a utility used to create and manage UNIX authentication permissions and passwords for PostgreSQL databases. It enables system administrators to grant database access to operating system users without requiring them to specify a separate password for the database.
Syntax
authunix_create [-D <DB_HOME>] [-u <USER>] [-g <GROUP>] <DATABASE>
Options/Flags
- -D <DB_HOME>: Specify the PostgreSQL data directory. Defaults to the value of the
PGDATA
environment variable. - -u
: Specify the operating system user to grant access to. - -g
: Specify the operating system group to grant access to. : The PostgreSQL database name to grant access to.
Examples
Create access for a user:
authunix_create -u john pgdb
Create access for a user and a group:
authunix_create -u john -g users pgdb
Create access for a group:
authunix_create -g users pgdb
Common Issues
- Permission denied error: Ensure the user or group specified has sufficient permissions to access the specified database.
- User already exists error: If the user already exists in the database, use
authunix_modify
to modify their permissions instead.
Integration
authunix_create can be integrated with other PostgreSQL management tools, such as psql
or pg_hba.conf
. By combining these commands, administrators can create granular access control policies for their databases.
Related Commands
- authunix_modify: Modify UNIX authentication permissions.
- pg_hba.conf: PostgreSQL host-based authentication configuration file.