Question

如果系统已安装Oracle Linux，如何检查已安装的操作系统并继续下载文件。

这就是我要做的

- hosts: all
  become: true
  gather_facts: true
  tasks:
    - name: Check if oracle linux is installed
      shell: |
        cat: /etc/system-release
      register: os_name
      ignore_errors: yes
    - debug:
      msg: "{{os_name.stdout}}"```

Answer 1

- hosts: all
  become: yes
  gather_facts: true
  tasks:     

     - name: downloading file if Oracle Linux is there
       get_url:
              url: #url of the file to download 
              dest: #path where you want to store it eg. /etc/downloaded-file
              mode: '0600' #permissions to be given to the file
       when: ansible_facts['distribution'] == "OracleLinux"

您可能需要阅读本参考资料。
1. variable discover from system: Facts
2. Downloads files from HTTP, HTTPS, or FTP to node

Answer 2

您应该使用ansible gather_facts: yes输出，以便您的ansible剧本在所有平台上都是通用的，否则阅读/etc/system-release不适用于所有平台。 Refer

- hosts: all
  become: true
  gather_facts: yes

  tasks:
    - name: Distribution
      debug: msg="{{ ansible_distribution }}"

Answer 3

所有其他答案都是正确的。如果由于某些原因（例如，目标主机上的python不可用）而您不能/不想收集事实，则这是一种丑陋的方式：

- hosts: whatever
  gather_facts: no
  tasks:
    - name: Register the system release
      raw: cat /etc/system-release
      register: system_release
      changed_when: no
      check_mode: no

    - name: Do something for Oracle systems
      ...
      when: "{{ system_release.stdout|trim is match('.*Oracle Linux.*') }}"

Ansible Playbook检查操作系统

3 个答案: