Install ansible 2.5.2 or higher. To check your currently installed version execute:
$ ansible --version
To install the latest version of ansible on any os go to to the ansible doc
$ ansible-playbook -i "host@192.168.122.45," site.yml --ask-become-pass
OR
./run.sh host@192.168.122.45
Note: The semicolon after the ip address is there on purpose. Without it ansible doesn't recognize it as an entry in an inventory file.