文件查詢

1. dnf 模組可以做套件管理，完整文件可用 ansible-doc 查詢 dnf 模組文件。

   [deyu1@kvm19 ansible]$ ansible-doc dnf | grep ^EX -A10
   EXAMPLES:
   
   - name: Install the latest version of Apache
     ansible.builtin.dnf:
       name: httpd
       state: latest
   
   - name: Install Apache >= 2.4
     ansible.builtin.dnf:
       name: httpd>=2.4
       state: present
   

2. 確認 dev 群組裡所有主機，套件 vim 還沒安裝，回傳成功。

   [deyu1@kvm19 ansible]$ ansible dev -m dnf -a "name=vim state=absent"
   kvm11 | SUCCESS => {
       "ansible_facts": {
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": false,
       "msg": "Nothing to do",
       "rc": 0,
       "results": []
   }
   

3. 使用 dnf 模組安裝 vim 至最新版本，回傳成功，含相依套件共安裝了 4 的套件。

   [deyu1@kvm19 ansible]$ ansible dev -m dnf -a "name=vim state=latest"
   kvm11 | CHANGED => {
       "ansible_facts": {
           "discovered_interpreter_python": "/usr/bin/python3"
       },
       "changed": true,
       "msg": "",
       "rc": 0,
       "results": [
           "Installed: gpm-libs-1.20.7-29.el9.x86_64",
           "Installed: vim-common-2:8.2.2637-21.el9.x86_64",
           "Installed: vim-enhanced-2:8.2.2637-21.el9.x86_64",
           "Installed: vim-filesystem-2:8.2.2637-21.el9.noarch"
       ]
   }