Create Database, Add User and Grant Privileges
In this article we will learn how to Create Database, Add User and Grant Privileges to the User
This tutorial is taken from the following link. Many thanks to the one who created it. https://medium.com/coding-blocks/creating-user-database-and-adding-access-on-postgresql-8bfcd2f4a91e
Prerequisite Knowledge
To understand this upgrade guide you dont need to be an expert but having some basic knowledge of linux terminal commands and postgres Database will help you.
Steps for Creating Database, Add User and grant privileges
Step 1 : Creating user Step 2 : Creating Database Step 3 : Giving the user a password Step 4 : Granting privileges on database
We also have an alternate option : Doing purely via psql
Alternate Option : Doing purely via psql
Let us begin the step by step guide to create database, add user and grant privileges
One nice thing about PGSQL is it comes with some utility binaries like createuser and createdb. So we will be making use of that. As the default configuration of Postgres is, a user called postgres is made on and the user postgres has full superadmin access to entire PostgreSQL instance running on your OS.
Code
$ sudo -u postgres psql
The above command gets you the psql command line interface in full admin mode. In the following commands, keep in mind the < angular brackets > are to denote variables you have to set yourself. In the actual command, omit the <>
Step 1 : Creating user
Code
$ sudo -u postgres createuser <username>
Step 2 : Creating Database
Code
$ sudo -u postgres createdb <dbname>
Step 3 : Giving the user a password
Code
$ sudo -u postgres psql
psql=# alter user <username> with encrypted password '<password>';
Step 4 : Granting privileges on database
Code
psql=# grant all privileges on database <dbname> to <username> ;
And yeah, that should be pretty much it !
Alternate Option : Doing purely via psql
Your OS might not have the createuser or createdb binaries, or you may, for some reason want to do it purely via psql, then these are the three magic commands —
Code
CREATE DATABASE yourdbname;
CREATE USER youruser WITH ENCRYPTED PASSWORD 'yourpass';
GRANT ALL PRIVILEGES ON DATABASE yourdbname TO youruser;