Setup an Ubutu Server For Deployment

We will asume that you have a fresh istance of Ubuntu Server at hand.

First step we will create a new user to our Ubuntu Server. In our case we name our user sir

adduser sir

Here the console will ask to enter a password for your new user. Choose a strong password that you can easily remenber.

Now we need to give to the new user the ability to run program with the sudo command.

usermod -aG sudo sir

And switch user

su - sir

Now we need to copy our Flask application folder to the remote server. We will use secure copy command scp

scp -r flaskAppDir sir@

The -r option let the command run recursively and so the entire folder, in our case flaskAppDir, and subfolder will be copied to the remote location. Set the user and ip address accordinly to your case.

Update the Ubuntu server and install the python3 interpreter and the pip3 package manager.

sudo apt update
sudo apt upgrade

sudo apt install python3
sudo apt install python3-pip

sudo pip3 install virtualenv
sudo pip3 install flask

sudo apt install nginx

Configure teh nano text editor to use 4 spaces istead of tabs.

nano .nanorc

Add teh followinf text:

set tabsize 4
set tabstospaces

Create an virtual environment for your application. For this we will use the virtuenv command

cd flaskAppDir
virtualenv venv
source venv/bin/activate

Install wsgi

pip3 install uwsgi flask

Open specific port to allow resquest to reach the server.

sudo ufw allow 8090

Configure WSGI


Insert the follwing text

from flaskAppFile import App
if __name__ == "__main__":

Configura uwsgi

uwsgi --socket --protocol=http -w wsgi:pp

Exit Virtualenv