Using Ambari with PostgreSQL

To set up PostgreSQL for use with Ambari:

Create a user for Ambari and grant it permissions.
- Using the PostgreSQL database admin utility:
  # sudo -u postgres psql
  CREATE DATABASE <AMBARIDATABASE>;
  CREATE USER <AMBARIUSER> WITH PASSWORD '<AMBARIPASSWORD>';
  GRANT ALL PRIVILEGES ON DATABASE <AMBARIDATABASE> TO <AMBARIUSER>;
  \connect <AMBARIDATABASE>;
  CREATE SCHEMA <AMBARISCHEMA> AUTHORIZATION <AMBARIUSER>;
  ALTER SCHEMA <AMBARISCHEMA> OWNER TO <AMBARIUSER>;
  ALTER ROLE <AMBARIUSER> SET search_path to '<AMBARISCHEMA>', 'public';
- Where <AMBARIUSER> is the Ambari user name <AMBARIPASSWORD> is the Ambari user password, <AMBARIDATABASE> is the Ambari database name and <AMBARISCHEMA> is the Ambari schema name.
Load the Ambari Server database schema.
- You must pre-load the Ambari database schema into your PostgreSQL database using the schema script.
  # psql -U <AMBARIUSER> -d <AMBARIDATABASE>
  \connect <AMBARIDATABASE>;
  \i Ambari-DDL-Postgres-CREATE.sql;
- Find the Ambari-DDL-Postgres-CREATE.sql file in the /var/lib/ambari-server/resources/ directory of the Ambari Server host after you have installed Ambari Server.
When setting up the Ambari Server, select Advanced Database Configuration > Option[4] PostgreSQL and enter the credentials you defined in Step 2. for user name, password, and database name.