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Specifies the hostname of the machine on which the
postmaster
is running.
-p, --port port
Specifies the Internet TCP/IP port or local Unix domain socket file
extension on which the postmaster
is listening for connections.
-e, --echo
Echo the queries that createdb generates
and sends to the backend.
-q, --quiet
Do not display a response.
-d, --createdb
Allows the new user to create databases.
-D, --no-createdb
Forbids the new user to create databases.
-a, --adduser
Allows the new user to create other users.
-A, --no-adduser
Forbids the new user to create other users.
-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.
-i, --sysid uid
Allows you to pick a non-default user id for the new user. This is not
necessary, but some people like it.
username
Specifies the name of the Postgres user to be created.
This name must be unique among all Postgres users.
You will be prompted for a name and other missing information if it is not
specified on the command line.
The options -h, -p, and -e,
are passed on literally to psql. The
psql options -U and -W
are available as well, but their use can be confusing in this context.
Outputs
CREATE USER
All is well.
createuser: creation of user "username" failed
Something went wrong. The user was not created.
If there is an error condition, the backend error message will be displayed.
See CREATE USER
and psql for possibilities.
Description
createuser creates a
new Postgres user.
Only users with usesuper set in
the pg_shadow class can create
new Postgres users.
createuser is a shell script wrapper around the
SQL command
CREATE USER via
the Postgres interactive terminal
psql. Thus, there is nothing
special about creating users via this or other methods. This means
that the psql must be found by the script and that
a database server is running at the targeted host. Also, any default
settings and environment variables available to psql
and the libpq front-end library do apply.
Usage
To create a user joe
on the default database server:
$ createuser joe
Is the new user allowed to create databases? (y/n) n
Shall the new user be allowed to create more new users? (y/n) n
CREATE USER
To create the same user joe
using the postmaster on host eden, port 5000, avoiding
the prompts and taking a look at the underlying query:
$ createuser -p 5000 -h eden -D -A -e joe
CREATE USER "joe" NOCREATEDB NOCREATEUSER
CREATE USER
