![]() ![]() However, a server that accepts remote connections might have many database users who have no local operating system account, and in such cases there need be no connection between database user names and OS user names. Only superusers and users with CREATEROLE privilege can create new users, so createuser must be invoked by someone who can connect as a superuser or a user with CREATEROLE privilege. If all the users of a particular server also have accounts on the server's machine, it makes sense to assign database user names that match their operating system user names. username Description createuser creates a new PostgreSQL user (or more precisely, a role). PostgreSQL database user names are logically separate from user names of the operating system in which the server runs. Refer to Chapter 22 and Chapter 21 for information about managing users and authentication. ![]() A role is an entity that can own database objects and have database privileges a role can be considered a user, a group, or both depending on how it is used. However, for versions after 9.2, the PostgreSQL installer installs with the the special NT AUTHORITYNetworkService, and the postgres account isnt created. Description CREATE ROLE adds a new role to a PostgreSQL database cluster. For versions before 9.2, the default password should be empty. ![]() The method used to authenticate a particular client connection can be selected on the basis of (client) host address, database, and user. This depends on what version of PostgreSQL you installed on windows. PostgreSQL offers a number of different client authentication methods. In this chapter, we consistently use database user to mean “ role with the LOGIN privilege”.Īuthentication is the process by which the database server establishes the identity of the client, and by extension determines whether the client application (or the user who runs the client application) is permitted to connect with the database user name that was requested. Change ' dbpassword ' in /etc/rhn/rhn.conf. Change the password in the following files and provide it with the one you have just set before. As explained in Chapter 22, PostgreSQL actually does privilege management in terms of “ roles”. Change the password for the user 'susemanager' in the database by running the following statement: spacewalk-sql -select-mode - <<<'ALTER ROLE susemanager WITH PASSWORD 'YOURNEWPASSWORD' ' 3. ![]()
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