云计算架构学习之Ansible-playbook实战、Ansible-流程控制、Ansible-字典循环-roles角色```bash #编写yml [root@ansible ansible]# cat wget.yml - hosts: backup tasks: - name: Install wget yum: name: wget state: present #检查playbook的语法 [root@ansible ansible]# ansible-playbook --syntax-check wget.yml playbook: wget.yml