I have not found similar questions, and I am learning. I have this question that I must ask.
I input the following command
(base) John-MacBook-Pro:dms johnsmith$ psql
psql (14.5)
Type "help" for help.
It works
But then when i try to create a new role I am stuck in the default role, if it makes sense.
johnsmith=#
how can i succeed in entering the right role?
My end goal is to enter the following commands:
README.md:
31 postgres=# ALTER ROLE postgres WITH PASSWORD 'postgres';
32: postgres=# CREATE DATABASE db;
33
Help?
Related
[LuisMontanoMichel#Luis-MacBook-Pro~% psql
psql (14.2)
Type
"help" for help.
[LuisMontanoMichel=# ALTER ROLE
"LuisMontanoMichel" WITH PASSWORD 'examplepass':
ALTER ROLE
[LuisMontanoMichel=# \q
[LuisMontanoMichel#Luis-MacBook-Pro~% psql
psql
(14.2)
Type
"help"
for help.
LuisMontanoMichel=#
I have a very basic question about postgres passwords.
I set my own but I still can start psql without typing it.
When will my password be used?
I'm migrating all the role from my PostgreSQL hosted in GCE VM to Cloud SQL by generating dump file
sudo -Hu postgres pg_dumpall -U postgres --globals-only --file=globals.sql
When I import the same(globals.sql) in Cloud SQL I came across below error:
exit status 3 SET SET SET CREATE ROLE ERROR: must be superuser to alter superusers
Note:
I used postgres user to import this dump file to the cloud sql database.
I'm curious is there any other way to tackle this since postgres user does not have superuser privileges?
I tried executed one query from globals.sql file using cloud shell, below is the output:
postgres=> CREATE ROLE vipinm;
CREATE ROLE
postgres=> ALTER ROLE vipinm WITH NOSUPERUSER INHERIT NOCREATEROLE NOCREATEDB LOGIN NOREPLICATION NOBYPASSRLS;
ERROR: must be superuser to alter superusers
Thanks in advance!
The psql documentation says:
psql returns 0 to the shell if it finished normally, 1 if a fatal error of its own occurs (e.g., out of memory, file not found), 2 if the connection to the server went bad and the session was not interactive, and 3 if an error occurred in a script and the variable ON_ERROR_STOP was set.
So don't set ON_ERROR_STOP.
The error means that you cannot execute the following line from your dump:
ALTER ROLE postgres WITH SUPERUSER INHERIT CREATEROLE CREATEDB LOGIN REPLICATION BYPASSRLS;
That is fine, and you can ignore the error.
This is kind of a bug. As a non-superuser, you can't even reiterate that another role is still not a superuser, as even mentioning anything about superusers even when it would have no effect throws an error. You can get around this by creating the role in its final state, rather than doing the CREATE then ALTER dance that pg_dump likes to do.
CREATE ROLE vipinm WITH NOSUPERUSER INHERIT NOCREATEROLE NOCREATEDB LOGIN NOREPLICATION NOBYPASSRLS;
Alternatively, you could remove from the ALTER statement all the attributes that don't cause any change but merely reiterate the current state of things, leaving:
ALTER ROLE vipinm WITH LOGIN;
In terminal, when I write psql it login to "Coyr". I want "postgres" to be the main user and have all the attributes. How can I accomplish that?
I guess you ran initdb as user coyr without the -U option, and now you want to rename the bootstrap superuser.
That is easy:
drop the user postgres you created
create a new superuser maxi
connect as maxi and run
ALTER ROLE coyr RENAME TO postgres;
connect as postgres and
DROP ROLE maxi;
By renaming coyr will have lost its password, so if you need one, you have to set it again.
I installed PosgreSQL 10.5 on a Mac running macOS 10.13.6 using Homebrew by following this tutorial. After installation, I ran =# \du to view all users. I saw the user with my Mac's name that the tutorial says PostgreSQL creates during installation, but the "postgres" default user was not created (or at least did not appear).
My Main Issue is...
I need to login to PostgreSQL 'at the root', and I either do not understand exactly what that means, or something is wrong. In following the very first steps from the PostgreSQL wiki's First Steps documentation, it says to...
First connect/login as root:
# su - postgres
$ psql
psql (9.6.0)
Type "help" for help.
But when I open a terminal window and type in su - postgres it asks for a password. I've typed in every password I could possibly have given that role, and it just says su: Sorry.
I did some research and tried to change the password by doing this:
postgres=# \password postgres.
That prompted me to enter a password twice, and it seemed to work. But, when I go back and run: su - postgres, it just gives me the same su: sorry.
So I tried typing in: psql postgres. This at least changed the $ to postgres=#, which tells me that I am at the PostgreSQL command line, and then the same: su: postgres, but that just changed the (=) sign to a (-), so now it changed to: postgres-#
I thought that maybe this meant that I was "logged into PostgreSQL at the root, but then I ran the following:
postgres=# su - postgres
postgres-# CREATE SCHEMA test
postgres-# CREATE USER tester PASSWORD 'P#ssword1'
postgres-# GRANT ALL ON SCHEMA test TO tester
postgres-# \q
...and none of that worked. It did not create a user or a schema.
History...
I've installed/uninstalled PostgreSQL on this Mac several times
in the past for testing
I've also installed/uninstalled pdAdmin for various reasons
It is highly possible that I did something in all of that shuffle that brought about this issue with the 'postgres' role not being created during this Homebrew instal. So, I did read through the rest of that tutorial and I did type in $ createuser postgres and that did seem to create the 'postgres' role. I tried to use ALTER ROLE to give that role Create DB but I never could get it to work using the command line, so I just opened pgAdmin, saw the role, granted it Create DB, and then back in command line ran =# \du again, and Create DB did appear next to the 'postgres' role I'd created. I added everything in pgAdmin, and now it looks like this.
List of roles
Role name | Attributes | Member of
----------------+------------------------------------------------------------+-----------
MyMacsNameHere | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
postgres | Superuser, Create role, Create DB, Replication | {}
My end goal...
I am trying to follow along with this YouTube tutorial about creating a Flask web application from scratch. In the YouTube tutorial, he uses MySQL, but I want to use PostgreSQL. Needless to say, I am up against a learning curve.
I am pretty much confused about root user,super user,user and permissions! I am not able to create a database inside user "athleticu". Following are the commands I used:-
athleticu#ip-172-30-4-103:/home/ubuntu$ createdb -T template0 simple_db1
createdb: database creation failed: ERROR: permission denied to create database
athleticu#ip-172-30-4-103:/home/ubuntu$ sudo createdb -T template0 simple_db1
sudo: unable to resolve host ip-172-30-4-103
createdb: could not connect to database template1: FATAL: role "root" does not exist
Please somebody clarify my doubts and tell me what should I write!
Hey I have already solved this. What you have to do is to first login as postgres user as follows:
$ su postgres
$ psql
postgres=# alter user athleticu createdb;
ALTER ROLE
Hope it helps you :)
Type \du in psql and you will see a list of all the registered users and what type of privileges each one has.
In order to grant privileges to the user which is logged in (eg 'user1'), I had to sign out and log in using one of the superuser roles in that list (eg. 'user2'), using the following command:
psql -U 'user2' -h localhost 'database2'
where 'database2' is the name of the one that specific superuser 'user2' has privileges to.
Once you are logged in as a superuser, you can grant privileges to 'user1' by:
ALTER ROLE user1 WITH CREATEDB
or
ALTER ROLE user1 WITH SUPERUSER
Then sign in again as user1, who is now a superuser.
This blog was helpful as well as this link.
Currently, this worked for me:
sudo su postgres
psql
ALTER USER username WITH CREATEDB;
\q
exit
The root user is an account on the system independent from Postgres. There is only one root user.
A superuser is an account in Postgres with access to everything. There may be many superusers.
System accounts and Postgres accounts are different things, although unless you specify a Postgres username when you connect to the database (through utilities like psql, createdb, dropdb, or otherwise), it will use the current system user's name in hopes that there is a corresponding Postgres account with the same name. The root user does not, by default, have a corresponding account in Postgres.
When you install Postgres on *nix, it creates both a superuser named postgres and a system user named postgres.
Therefore, when you need to do something with Postgres as the built-in superuser, you have two options:
You may sudo su - postgres to become the postgres system user and execute your command (createdb, psql, etc). Because the system user has the same name as the database superuser, your command will connect as the appropriate account.
You may specify the username to execute as with the -U switch, eg psql -U postgres ....
Depending on your Postgres server's authentication settings, you may be required to enter a password with either or both connection methods.
What you can do when you have fresh installation of PostgreSQL is create your user with some rights (see createuser documentation):
my-user> sudo su - postgres -c "createuser <my-user> --createdb"
This will allow my-user to create DBs just like so:
my-user> createdb <my-db>
If you want the my-user to be able to do anything just use the --superuser flag instead:
my-user> sudo su - postgres -c "createuser <my-user> --superuser"
I got the same error and I found out that the reason was that I was trying to create a database outside of psql as a user which did not exist for postgresql. I found out about it and solved it by taking the following steps:
In my terminal I logged in as postgres user (the root user by default for postgresql) by typing sudo -u postgres psql
While inside the psql I typed \du to see all users and their privileges. I found out that I had only one user (the postgres one) and I had to create another superuser which had the same username as my Linux user (george)
I typed (still inside psql) CREATE USER george SUPERUSER; and this way I created a new super user called george.
I exited psql (by typing \q) and I was now able from outside psql, meaning from my terminal, to run created db <database name> with no issues at all.
Error ? You are trying to perform database actions( Creating Database, creating Roles) using a user that doesn't have the permission for those types of actions you are trying to perform.
solution ? Simply login to your database on the command line, i.e for PostgreSQL one will use "sudo -u postgres psql", then confirm that users specific assigned roles using the command "\du", most probably he/she doesn't have the necessary permissions to perform the actions you wanted. Then simply assign the roles you want the user to perform ,i.e create Database or simply make user "Superuser" by following along(https://chartio.com/resources/tutorials/how-to-change-a-user-to-superuser-in-postgresql/)