See the reference pages for the CREATE ROLE and ALTER ROLE commands for details.Ī role can also have role-specific defaults for many of the run-time configuration settings described in Chapter 20. Specify connection limit upon role creation with CREATE ROLE name CONNECTION LIMIT ' integer'.Ī role's attributes can be modified after creation with ALTER ROLE. connection limitĬonnection limit can specify how many concurrent connections a role can make. To create such a role, use CREATE ROLE name BYPASSRLS as a superuser. bypassing row-level securityĪ role must be explicitly given permission to bypass every row-level security (RLS) policy (except for superusers, since those bypass all permission checks). Alternatively, inheritance can be overridden for individual grants by using WITH INHERIT TRUE or WITH INHERIT FALSE. However, to create a role which does not inherit privileges by default, use CREATE ROLE name NOINHERIT. inheritance of privilegesĪ role inherits the privileges of roles it is a member of, by default. Specify a password upon role creation with CREATE ROLE name PASSWORD ' string'. Database passwords are separate from operating system passwords. The password and md5 authentication methods make use of passwords. passwordĪ password is only significant if the client authentication method requires the user to supply a password when connecting to the database. To create such a role, use CREATE ROLE name REPLICATION LOGIN. A role used for streaming replication must have LOGIN permission as well. initiating replicationĪ role must explicitly be given permission to initiate streaming replication (except for superusers, since those bypass all permission checks). Finally, CREATEROLE does not confer the ability to grant or revoke the BYPASSRLS privilege. RENAME to be used on REPLICATION roles, as well as the use of COMMENT ON ROLE, SECURITY LABEL ON ROLE, and DROP ROLE. Furthermore, CREATEROLE does not convey the power to create REPLICATION users, nor the ability to grant or revoke the REPLICATION privilege, nor the ability to modify the role properties of such users. However, CREATEROLE does not convey the ability to create SUPERUSER roles, nor does it convey any power over SUPERUSER roles that already exist. It also includes modifications to a role that can be made using the COMMENT and SECURITY LABEL commands. Altering a role includes most changes that can be made using ALTER ROLE, including, for example, changing passwords. Such a grant occurs automatically when a CREATEROLE user that is not a superuser creates a new role, so that by default, a CREATEROLE user can alter and drop the roles which they have created. A role with CREATEROLE privilege can alter and drop roles which have been granted to the CREATEROLE user with the ADMIN option. To create such a role, use CREATE ROLE name CREATEROLE. role creationĪ role must be explicitly given permission to create more roles (except for superusers, since those bypass all permission checks). To create such a role, use CREATE ROLE name CREATEDB. database creationĪ role must be explicitly given permission to create databases (except for superusers, since those bypass all permission checks). You must do this as a role that is already a superuser. To create a new database superuser, use CREATE ROLE name SUPERUSER. This is a dangerous privilege and should not be used carelessly it is best to do most of your work as a role that is not a superuser. ( CREATE USER is equivalent to CREATE ROLE except that CREATE USER includes LOGIN by default, while CREATE ROLE does not.) superuser statusĪ database superuser bypasses all permission checks, except the right to log in. To create a role with login privilege, use either: A role with the LOGIN attribute can be considered the same as a “ database user”. Type \du to review the new role.Only roles that have the LOGIN attribute can be used as the initial role name for a database connection. Grant all table privileges: GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO adimech Step 7 Step 2Ĭreate a new user account (in this case, it will be called ‘adimech’ and have the password ‘f9sh3jf5m3’): CREATE USER adimech WITH PASSWORD 'f9sh3jf5m3' Step 3Īlter the role to enable a non-expiring password: ALTER ROLE adimech VALID UNTIL 'infinity' Step 4Īlter the role to enable the creation of roles: ALTER ROLE adimech CREATEROLE Step 5Īlter the role to prevent superuser: ALTER ROLE adimech NOSUPERUSER Step 6 Log into the database as a superuser and type \du to review all current roles. The following is a procedure to create a non-superuser role in PostgreSQL: Step 1 Superuser status is dangerous and should be used only when really needed. In PSQL, a “superuser” can override all access restrictions within the database. Use this easy procedure to establish a non-superuser role in PostgreSQL.
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