Ansible important components (playbook)

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Ansible playbook Documentstion：https://docs.ansible.com/ansible/latest/porting_guides/porting_guide_2.9.html#playbook

Ansible Source code ：https://github.com/ltfafei/ansible
    

1.playbook Introduction and basic grammar

    Playbook The Chinese meaning is ： Script . Reasonable compilation playbook Scripts can be used ansible Deploy more complex businesses , Improve work efficiency .nsible paybook The file format is YAML grammar , So I want to write something that can work correctly playbook Script , First of all, understand yaml grammar .

（1）YAML Introduction and grammar

    YAML Its syntax is similar to other high-level languages , And can express the list simply 、 Hash table , Scalar data form .
grammar ：
（1） Case sensitive ;
（2） Use indentation to indicate hierarchy ;
（3） Indenting is not allowed tab, Only spaces are allowed ;
（4） The number of indented spaces doesn't matter , Just align the elements at the same level to the left ;
（5）’#' Notation .

YAML Official website ：https://yaml.org/spec/1.2/spec.html
    

（2）pla