To achieve this, I followed the following steps:
Setting up vagrant which I did by installing vagrant on my local machine and running vagrant init in a folder to generate a Vagrant file
Editing vagrant file config.vm.box and adding CENTOS 7
Editing my private network in config.vm.network to add the address 192.168.33.10
Adding a script called myscript.sh which I shall add the bash commands to run the software in my VM. The line edited here was config.vm.provision "shell", path: "myscript.sh"
I then edited my script.sh in the following steps:
Enabling EPEL repository since some of the software is in it with the command sudo yum install epel-release -y
Installing necessary components e.g pip, python and postgresql using the command sudo yum install python-pip python-devel gcc postgresql-server postgresql-devel postgresql-contrib -y
Initializing postgreSQL database using the command sudo postgresql-setup initdb
Starting postresql using the command sudo systemctl start postgresql
Editing the user’s permissions in pg_hba.conf file to disable peer authentication using the commands
sudo sed -i 's/ident/trust/g' /var/lib/pgsql/data/pg_hba.conf```
Restoring postgresql using the command ` sudo systemctl restart postgresql `
Enabling postgresql to start automatically on boot using the command `sudo systemctl enable postgresql`
creating database `djangodb` if doesn’t exist using the command `psql -U postgres -tc "SELECT 1 FROM pg_database WHERE datname = 'djangodb'" | grep -q 1 || psql -U postgres -c "CREATE DATABASE djangodb"`
Creating a user(Tony) if he doesn’t exist using the command `psql -h localhost -U postgres -tc "SELECT 1 FROM pg_roles WHERE rolname = 'tony'" | grep -q 1 || psql -h localhost -U postgres -c "CREATE USER tony WITH PASSWORD 'jw8s0F4';"`
Altering some of the user roles to give them full permissions to the database `djangoapp` just created using the following commands:
```psql -U postgres -c "ALTER ROLE tony SET client_encoding TO 'utf8';"
psql -U postgres -c "ALTER ROLE tony SET default_transaction_isolation TO 'read committed';"
psql -U postgres -c "ALTER ROLE tony SET timezone TO 'UTC';"
psql -U postgres -c "GRANT ALL PRIVILEGES ON DATABASE djangodb TO tony;"
psql -U postgres firstdb -c "GRANT ALL ON ALL TABLES IN SCHEMA public to tony;"
psql -U postgres firstdb -c "GRANT ALL ON ALL SEQUENCES IN SCHEMA public to tony;"
psql -U postgres firstdb -c "GRANT ALL ON ALL FUNCTIONS IN SCHEMA public to tony;"```
Install virtualenv using the command `sudo pip install virtualenv`
Remove folder called `projectfolder` if it exists then creating and one to clone the app into using the commands:
```rm -rf ~/projectfolder
mkdir ~/projectfolder```
Cd into the folder to run commands using: `cd ~/projectfolder`
installing git to clone repo using the command `sudo yum install git -y`
Checking if the project Djangoapp exists and pulling it if it exists while cloning it if it doesn’t exist using the if statement:
```if [[ -d djangoapp ]]; then
cd djangoapp;
git pull;
else
# clone the repo
git clone https://github.com/Tony-Ndichu/djangoapp.git
# cd into the django app
cd djangoapp
fi```
Creating virtualenv for project to be cloned using the command `virtualenv myvenv`
Activating the virtual environment using `source myvenv/bin/activate`
Installing django and psycopg2 using `pip install django psycopg2`
Exporting the environment variables that the app needs using the following commands
```export DB_NAME="djangob"
export DB_USER="tony"
export HOST="localhost"
export DB_PASSWORD="jw8s0F4"```
Making migrations using the command: `python manage.py makemigrations`
Running migrations using: `python manage.py migrate`
Creating a superuser to test that the app will actually run and have a superuser with the credentials I’ll specify:
```cat <<EOF | python manage.py shell
from django.contrib.auth import get_user_model
User = get_user_model() # get the currently active user model,
User.objects.filter(username='antony').exists() or \
User.objects.create_superuser('antony', '[email protected]', 'password')
EOF```
kill any processes running on port 8000 which is the port our app will use.To do this, I had to install lsof…..the commands for this step are therefore:
```sudo yum install lsof
sudo kill -9 $(sudo lsof -t -i:8000)```
edit allowed hosts to include the vm private network in the django app by editing settings.py by line number(28):
```sed -i '28s/.*/ALLOWED_HOSTS = ["192.168.33.10", "localhost", "127.0.0.1"]/' ~/projectfolder/djangoapp/myproject/settings.py```
Then finally I ran the server using the command:
```python manage.py runserver 0.0.0.0:8000```