Install PgAdmin 4 on Ubuntu 20.04

PgAdmin is the most popular and feature rich Open Source administration and development platform for PostgreSQL, the most advanced Open Source database in the world. Reference

Install Curl

Run commands:

sudo su
apt update
apt install -y curl

Adding Repository

Install public key to repository, run:

sudo su
curl https://www.pgadmin.org/static/packages_pgadmin_org.pub | sudo apt-key add

Make a configuration file for repository, run:

sudo su
sh -c 'echo ""deb https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/$(lsb_release -cs) pgadmin4 main"" > /etc/apt/sources.list.d/pgadmin4.list && apt update'

Install PgAdmin

Install PgAdmin 4 for desktop and web:

sudo apt install pgadmin4

Install PgAdmin4 only for desktop:

sudo apt install pgadmin4-desktop

Install PgAdmin4 only for web:

sudo apt install pgadmin4-web

Configuration

If install pgadmin4-web, configure web server, run:

sudo su
/usr/pgadmin4/bin/setup-web.sh

Enter email and password for PgAdmin in web and type y if you agree want to PgAdmin configure server for you.

Systemctl

To see the PostgreSQL status, run:

sudo su
systemctl status postgresql

To stop the PostgreSQL service, run:

sudo su
systemctl stop postgresql

To run the PostgreSQL service, run:

sudo su
systemctl start postgresql

To stop the PostgreSQL service (not automatic start again), run:

sudo su
systemctl disable postgresql

To run service PostgreSQL (auto start), run:

sudo su
systemctl enable postgresql