Implementing Modern DevOps

Ansible variables

Variables are the most simple of the potential customizations. With variables, we can define values that are going to be replaced in our playbooks. Let's take a look at the following playbook:

---- hosts: all  user: root  tasks:  - debug:    msg: "Hello {{ myName }}! I am {{ inventory_hostname }}"

Replace the content of tasks.yml with the snippet from earlier. There are two new symbols in our task. Also, our task is new: debug is used to output values from our variables into the terminal while executing the playbook. Let's take a look at the execution (we will use the same configuration as the example from earlier):

ansible-playbook -i inventory tasks.yml

It fails:

The reason for the failure can be seen in in the message: ...