This is used in the demonstration of development of Ansible Playbooks.

Below are the steps required to get this working on a base linux system.

• Install all required dependencies
• Start Web Server

1. Install system dependencies

Python and its dependencies

apt-get install -y python python-setuptools python-dev build-essential python-pip python-mysqldb

2. Install application dependencies

Install python dependencies

pip install configparser
pip install flask
pip install flask-sqlalchemy

3. Download the application

git clone https://github.com/jrrickerson/flask-guestbook /opt/flask-guestbook

4. Start Web Server

Ensure the application is not already running

kill $(ps -ef |grep -v grep | grep -w flask |awk '{print $2}')

Start web server in a background process

FLASK_APP=/opt/flask-guestbook/app.py nohup flask run -h 0.0.0.0 -p 8080 &

5. Test

List messages
curl http://<IP>:8080/signatures

Write a message
curl -X POST http://<IP>:8080/signatures?message="my message"

Add a mysql database

1. Install and Configure Database

Install MySQL database

apt-get install -y mysql-server mysql-client

Allow any host to connect

sed -i "s/.*bind-address.*/bind-address = 0.0.0.0/" /etc/mysql/mysql.conf.d/mysqld.cnf

2. Start Database Service

• Start the database service

  service mysqld start
  

• Create database and database users

  # mysql -u <username> -p
  
  mysql> CREATE DATABASE guestbook;
  mysql> GRANT ALL ON *.* to db_user@'%' IDENTIFIED BY 'Passw0rd';
  

• Configure database credentials and parameters for the app The app looks for a configuration file at '/opt/guestbook/vars.ini'