Ansible/First Instruction

Test to see if Ansible can access the machines

One must supply the following data points to enable Ansible to access the machines:

1. all for all the machines listed in the inventory file in the current working directory.
2. -i for input file, in this case, the inventory file in the current working directory.
3. --key-file for the secret key file, in this case, the ~/.ssh/ansible.pem is the one that is shared with all the nodes.
4. -u for user name, in this case, ubuntu is the user associated with the key file.
5. -m for module name, in this case, ping is the module to be executed.

ansible all -i inventory --key-file ~/.ssh/ansible.pem -u ubuntu -m ping