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When deployed to use Postgres authentication on an Amazon host, the User Administration tab will display the User Administration table. You can use the User Administration table to register new users for the Ark console, edit user properties, or delete a user account (see Figure 4.43). Please note that you must use a client application to connect to the Ark console and add the user to the postgres database before the user is allowed to connect.
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Columns within the User Administration table provide information about the current AWS console users:
Check the box next to a user name in the ADMIN column to indicate that the user should have administrative access to the Ark console.
Check the box next to a user name in the ENABLED column to indicate that the account is active.
Check the box in the TEMPLATES ONLY column to indicate that the user must use templates when deploying clusters.
The date and time of the last login is displayed in the LAST LOGIN column. The time zone displayed is based on the time zone used by the operating system.
The LOGINS column displays a cumulative total of the number of times that the user has logged in.
After adding the user to the Ark console, use the psql client application to add the user to the backing postgres database. To use the psql client, SSH to the host of the Ark console. Then, navigate into the bin directory, and connect to the psql client with the command:
When prompted, supply the password of the postgres database user. After connecting to the database, you can use the CREATE ROLE command to add a user to the database:
ADD USER user_name WITH PASSWORD 'password';
user_name specifies the name of the Ark user.
password specifies the password associated with the user name.


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