Before doing real deployment you may want to try to deploy to a sandbox, instructions bellow helps you to do that.
Install vagrant, virtualbox and ansible:
sudo apt install vagrant virtualbox python-pip sudo pip install 'ansible>=1.6'
For the vagrant, you will probably need to download it from vagrant.com, because at least 1.6 version is required.
Prepare virtual machine for testing deployment:
vagrant up ssh-copy-id vagrant@10.0.0.42
You already had your ssh key, didn't you?
And try to deploy:
ansible-playbook -u vagrant -i 10.0.0.42, deploy.yml
Be patient, this last command may take long time to finish, up to 10 minutes.
Next thing to test is import script:
ansible-playbook -u vagrant -i 10.0.0.42, import-data.yml
If everything went well you should see working web page by visiting http://localhost:8080/ .