如何在Ansible中循环这个字典？

4 回答

• 6

  现在Ansible允许这样做

  - name: add several users
    user:
      name: "{{ item.name }}"
      state: present
      groups: "{{ item.groups }}"
    with_items:
      - { name: 'testuser1', groups: 'wheel' }
      - { name: 'testuser2', groups: 'root' }
  

  回复于 2024-05-14T01:45:46+08:00
• 0

  好吧，我找不到一个非常简单的方法来做到这一点，但是，通过一点点jinja2，我们可以实现这样的东西：

  /tmp ❯❯❯ cat example.yml
  ---
  - hosts: 127.0.0.1
    vars:
      war_files:
        server1:
        - file1.war
        - file2.war
        server2:
        - file1.war
        - file2.war
        - file3.war
    tasks:
    - set_fact:
        war_files_list_of_dicts: |
            {% set res = [] -%}
            {% for key in war_files.keys() -%}
               {% for value in war_files[key] -%}
                {% set ignored = res.extend([{'Server': key, 'WAR':value}]) -%}
               {%- endfor %}
            {%- endfor %}
            {{ res }}
  
    - name: let's debug the crap out of this
      debug: var=war_files_list_of_dicts
  
    - name: Servers and their WARs!!!
      debug:
         msg: "Server={{ item.Server }}, WAR={{ item.WAR }}"
      with_items: "{{ war_files_list_of_dicts }}"
  

  而且，当剧本运行时：

  /tmp ❯❯❯ ansible-playbook example.yml
   [WARNING]: provided hosts list is empty, only localhost is available
  
  
  PLAY [127.0.0.1] ***************************************************************
  
  TASK [setup] *******************************************************************
  ok: [127.0.0.1]
  
  TASK [set_fact] ****************************************************************
  ok: [127.0.0.1]
  
  TASK [let's debug the crap out of this] ****************************************
  ok: [127.0.0.1] => {
      "war_files_list_of_dicts": [
          {
              "Server": "server1", 
              "WAR": "file1.war"
          }, 
          {
              "Server": "server1", 
              "WAR": "file2.war"
          }, 
          {
              "Server": "server2", 
              "WAR": "file1.war"
          }, 
          {
              "Server": "server2", 
              "WAR": "file2.war"
          }, 
          {
              "Server": "server2", 
              "WAR": "file3.war"
          }
      ]
  }
  
  TASK [Servers and their WARs!!!] ***********************************************
  ok: [127.0.0.1] => (item={'WAR': u'file1.war', 'Server': u'server1'}) => {
      "item": {
          "Server": "server1", 
          "WAR": "file1.war"
      }, 
      "msg": "Server=server1, WAR=file1.war"
  }
  ok: [127.0.0.1] => (item={'WAR': u'file2.war', 'Server': u'server1'}) => {
      "item": {
          "Server": "server1", 
          "WAR": "file2.war"
      }, 
      "msg": "Server=server1, WAR=file2.war"
  }
  ok: [127.0.0.1] => (item={'WAR': u'file1.war', 'Server': u'server2'}) => {
      "item": {
          "Server": "server2", 
          "WAR": "file1.war"
      }, 
      "msg": "Server=server2, WAR=file1.war"
  }
  ok: [127.0.0.1] => (item={'WAR': u'file2.war', 'Server': u'server2'}) => {
      "item": {
          "Server": "server2", 
          "WAR": "file2.war"
      }, 
      "msg": "Server=server2, WAR=file2.war"
  }
  ok: [127.0.0.1] => (item={'WAR': u'file3.war', 'Server': u'server2'}) => {
      "item": {
          "Server": "server2", 
          "WAR": "file3.war"
      }, 
      "msg": "Server=server2, WAR=file3.war"
  }
  
  PLAY RECAP *********************************************************************
  127.0.0.1                  : ok=4    changed=0    unreachable=0    failed=0
  

  回复于 2024-05-14T01:45:46+08:00
• 7

  这个怎么样

  - hosts: localhost
    vars:
      war_files:
        server1:
        - file1.war
        - file2.war
        server2:
        - file1.war
        - file2.war
        - file3.war
    tasks:
      - name: Loop over subelements of the dictionary
        debug:
          msg: "Key={{ item.0.key }} value={{ item.1 }}"
        loop: "{{ war_files | dict2items | subelements('value') }}"
  

  dict2items ， subelements 过滤器将在Ansible 2.6中出现 .

  仅供参考，如果您的目标的过滤器不存在，您可以在python中编写自己的过滤器，而不必诉诸于jinja2 hacks . Ansible很容易扩展;默认搜索 filter_plugins/*.py 中的过滤器，与您的播放/角色相邻，并自动包含 - 有关详细信息，请参阅Developing Plugins .

  回复于 2024-05-14T01:45:46+08:00
• 5

  这是我循环遍历词典的首选方式：

  input_data.yml包含以下内容：

  ----
  input_data:
    item_1:
      id: 1
      info: "Info field number 1"
    item_2:
      id: 2
      info: "Info field number 2"
  

  然后我使用keys（）函数在play中使用如上所述的数据结构，并使用with_items迭代数据：

  ---
  - hosts: localhost
    gather_facts: false
    connection: local
    tasks:
      - name: Include dictionary data
        include_vars:
          file: data.yml
  
      - name: Show info field from data.yml
        debug:
          msg: "Id: {{ input_data[item]['id'] }} - info: {{ input_data[item]['info'] }}"
        with_items: "{{ input_data.keys() }}"
  

  上面的剧本产生以下输出：

  PLAY [localhost] ***********************************************************
  
  TASK [Include dictionary data] *********************************************
  ok: [localhost]
  
  TASK [Show info field from data.yml] ***************************************
  ok: [localhost] => (item=item_2) => {
      "msg": "Id: 2 - info: Info field item 2"
  }
  ok: [localhost] => (item=item_3) => {
      "msg": "Id: 3 - info: Info field item 3"
  }
  ok: [localhost] => (item=item_1) => {
      "msg": "Id: 1 - info: Info field item 1"
  }
  
  PLAY RECAP *****************************************************************
  localhost                  : ok=2    changed=0    unreachable=0    failed=0
  

  回复于 2024-05-14T01:45:46+08:00