Интерактивная система просмотра системных руководств (man-ов)
createuser (1)
>> createuser (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
NAME
createuser - define a new PostgreSQL user account
SYNOPSIS
createuser [ option... ] [ username ]
DESCRIPTION
createuser creates a
new PostgreSQL user (or more precisely, a role).
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 you wish to create a new superuser, you must connect as a
superuser, not merely with CREATEROLE privilege.
Being a superuser implies the ability to bypass all access permission
checks within the database, so superuserdom should not be granted lightly.
createuser is a wrapper around the
SQL command CREATE ROLE [create_role(7)].
There is no effective difference between creating users via
this utility and via other methods for accessing the server.
OPTIONS
createuser accepts the following command-line arguments:
username
Specifies the name of the PostgreSQL user
to be created.
This name must be different from all existing roles in this
PostgreSQL installation.
-s
--superuser
The new user will be a superuser.
-S
--no-superuser
The new user will not be a superuser.
This is the default.
-d
--createdb
The new user will be allowed to create databases.
-D
--no-createdb
The new user will not be allowed to create databases.
This is the default.
-r
--createrole
The new user will be allowed to create new roles (that is,
this user will have CREATEROLE privilege).
-R
--no-createrole
The new user will not be allowed to create new roles.
This is the default.
-l
--login
The new user will be allowed to log in (that is, the user name
can be used as the initial session user identifier).
This is the default.
-L
--no-login
The new user will not be allowed to log in.
(A role without login privilege is still useful as a means of
managing database permissions.)
-i
--inherit
The new role will automatically inherit privileges of roles
it is a member of.
This is the default.
-I
--no-inherit
The new role will not automatically inherit privileges of roles
it is a member of.
-c number
--connection-limit number
Set a maximum number of connections for the new user.
The default is to set no limit.
-P
--pwprompt
If given, createuser will issue a prompt for
the password of the new user. This is not necessary if you do not plan
on using password authentication.
-E
--encrypted
Encrypts the user's password stored in the database. If not
specified, the default password behavior is used.
-N
--unencrypted
Does not encrypt the user's password stored in the database. If
not specified, the default password behavior is used.
-e
--echo
Echo the commands that createuser generates
and sends to the server.
-q
--quiet
Do not display a response.
You will be prompted for a name and other missing information if it
is not specified on the command line.
createuser also accepts the following
command-line arguments for connection parameters:
-h host
--host host
Specifies the host name of the machine on which the
server
is running. If the value begins with a slash, it is used
as the directory for the Unix domain socket.
-p port
--port port
Specifies the TCP port or local Unix domain socket file
extension on which the server
is listening for connections.
-U username
--username username
User name to connect as (not the user name to create).
-W
--password
Force password prompt (to connect to the server, not for the
password of the new user).
ENVIRONMENT
PGHOST
PGPORT
PGUSER
Default connection parameters
DIAGNOSTICS
In case of difficulty, see CREATE ROLE [create_role(7)] and psql(1) for
discussions of potential problems and error messages.
The database server must be running at the
targeted host. Also, any default connection settings and environment
variables used by the libpq front-end
library will apply.
EXAMPLES
To create a user joe on the default database
server:
$ createuser joe
Shall the new role be a superuser? (y/n) n
Shall the new role be allowed to create databases? (y/n) n
Shall the new role be allowed to create more new roles? (y/n) n
CREATE USER
To create the same user joe using the
server on host eden, port 5000, avoiding the prompts and
taking a look at the underlying command:
$ createuser -h eden -p 5000 -S -D -R -e joe
CREATE ROLE joe NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT LOGIN;
CREATE ROLE
To create the user joe as a superuser,
and assign a password immediately:
$ createuser -P -s -e joe
Enter password for new role: xyzzy
Enter it again: xyzzy
CREATE ROLE joe PASSWORD 'xyzzy' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;
CREATE ROLE
In the above example, the new password isn't actually echoed when typed,
but we show what was typed for clarity. However the password
will appear in the echoed command, as illustrated ---
so you don't want to use -e when assigning a password, if
anyone else can see your screen.
SEE ALSO
dropuser(1), CREATE ROLE [create_role(7)], Environment Variables (the documentation)
