Table Of Content
Installing and Configuring PostgreSQL Database on Ubuntu
View more Tutorials:
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1- Introduction
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Document is based on:
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Ubuntu 14, 16, 18
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PostGres 9.6, 10
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The post can be applied to Unbuntu with the version of 12, 14 or 16,...
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You can find out other versions of PostGres here:
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2- Install PostGres
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First, check which version of Ubuntu you are using. Pay attention to UBUNTU_CODENAME, it's important to you now.
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cat /etc/*release
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Version
Code name
Release date
End of Life date
Ubuntu 18.04.1 LTS
bionic
July 26, 2018
April 2023
Ubuntu 18.04 LTS
bionic
April 26, 2018
April 2023
Ubuntu 16.04.4 LTS
xenial
March 1, 2018
April 2021
Ubuntu 16.04.3 LTS
xenial
August 3, 2017
April 2021
Ubuntu 16.04.2 LTS
xenial
February 16, 2017
April 2021
Ubuntu 16.04.1 LTS
xenial
July 21, 2016
April 2021
Ubuntu 16.04 LTS
xenial
April 21, 2016
April 2021
Ubuntu 14.04.5 LTS
trusty
August 4, 2016
April 2019
Ubuntu 14.04.4 LTS
trusty
February 18, 2016
HWE August 2016
Ubuntu 14.04.3 LTS
trusty
August 6, 2015
HWE August 2016
Ubuntu 14.04.2 LTS
trusty
February 20, 2015
HWE August 2016
Ubuntu 14.04.1 LTS
trusty
July 24, 2014
April 2019
Ubuntu 14.04 LTS
trusty
April 17, 2014
April 2019
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Installing:
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Execute the following commands on the Terminal, note: Replace {UBUNTU_CODENAME} by your UBUNTU_CODENAME.
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sudo add-apt-repository "deb https://apt.postgresql.org/pub/repos/apt/ {UBUNTU_CODENAME}-pgdg main" wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add - sudo apt-get update sudo apt-get install postgresql-9.6 -
For example, with Ubuntu 16:
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sudo add-apt-repository "deb https://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main" wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add - sudo apt-get update sudo apt-get install postgresql-9.6
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If you receive an error when installing, please see the appendix at the end of this post:
E: The method driver /usr/lib/apt/methods/https could not be found. N: Is the package apt-transport-https installed? E: Failed to fetch https://apt.postgresql.org/pub/repos/apt/dists/xenial-pgdg/InRelease E: Some index files failed to download. They have been ignored, or old ones used instead.
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Installing Postgres on Ubuntu Server 16.4:
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Start postgres:
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sudo service postgresql start
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3- Set up a password for the user postgres
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Firstly, you need to log in PostGres (With root right of Ubuntu).
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sudo -u postgres psql
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You have logged in PostGres successully:
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In PostGres, "postgres" is root user, you can set up new password for this user:
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ALTER USER postgres PASSWORD 'newpassword';
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After changing password successfully, you can exit PostGres with the command "\q".
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After the password of the user "postgres" has been set up, you can log in to the Postgres through the command:
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psql -U postgres -h localhost
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Enter the password that you set up above
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4- Using PostGreSQL
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Make sure that you log in Postgres with user "postgres".
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Run 3 following commands to create user, database, and grant all the privileges of using the database to the use that is newly created.
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CREATE USER myuser with PASSWORD '123'; CREATE DATABASE mydb; GRANT ALL PRIVILEGES ON DATABASE mydb TO myuser;
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See in pgAdmin3:
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Connect to "mydb" database with user "myuser":
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Exit PostGres:
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Logon "mydb" database with user "myuser":
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psql -U myuser -h localhost -d mydb
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Now you have connected to database "mydb":
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Create table:
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-- Create table Account Create table Account (User_Name varchar(30), Full_Name varchar(64) ) ; -- Insert 2 row to Account. Insert into Account(user_name, full_name) values ('gates', 'Bill Gate'); Insert into Account(user_name, full_name) values ('edison', 'Thomas Edison'); -- Query Select * from Account; -
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See on pgAdmin3:
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5- Install pgAdmin
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pgAdmin is a software, visual tool that helps you work with the Postgres database, you can install it according to the instruction below:
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6- Appendix: Fix Error
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If you receive an error message:
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E: The method driver /usr/lib/apt/methods/https could not be found. N: Is the package apt-transport-https installed? E: Failed to fetch https://apt.postgresql.org/pub/repos/apt/dists/xenial-pgdg/InRelease E: Some index files failed to download. They have been ignored, or old ones used instead.
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Run command:
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sudo apt-get install apt-transport-https
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