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<h3><a href="/post/ansible-selectattr-from-list-in-dictionary/">[ansible] 引用事先定義好的yaml檔裡面的變數 - Ansible Selectattr From List in Dictionary file</a></h3>
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<span class="date moment">2019-07-01</span>
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<a href="/categories/ansible">Ansible</a>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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</div>
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<p>在ansible中，關於如何引用自定義的變數，一直讓我很頭疼</p>
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<p>尤其是有牽涉到從外部導入yaml檔案時，更是常常讓我不知道到底該怎麼抓出想要的變數</p>
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<p>這次還是用selectattr 來處理，希望下次能夠記得…</p>
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<p></p>
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<p>首先是導入的yaml檔案，內容長這樣</p>
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<pre><code>client_hosts:
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abc.com:
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- host: hqdc021
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ipv4: 192.168.11.21
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- host: hqdc022
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ipv4: 192.168.11.22
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- host: hqdc023
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ipv4: 192.168.11.23
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- host: hqdc024
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ipv4: 192.168.11.24
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- host: hqdc025
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iuser: True
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ipv4: 192.168.11.25
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user: [yangj]
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- host: hqdc026
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ipv4: 192.168.11.26
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user: [changp, joy]
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- host: hqdc027
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ipv4: 192.168.11.27
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xyz.com:
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- host: dc021
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iuser: True
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ipv4: 192.168.1.21
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user: [tim]
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- host: dc022
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ipv4: 192.168.1.22
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- host: dc023
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ipv4: 192.168.1.23
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- host: dc024
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ipv4: 192.168.1.24
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- host: dc025
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ipv4: 192.168.1.25
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user: [eric]
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- host: dc026
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ipv4: 192.168.1.26
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user: [erica]
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- host: dc027
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ipv4: 192.168.1.27
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</code></pre>
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<p>在playbook中，首先先導入這個檔案</p>
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<pre><code>- name: load client_host
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include_vars:
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file: client_hosts.yml
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name: ch
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</code></pre>
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<p>然後用這個剛剛導入的檔案，去做出想要的清單</p>
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<p>像底下這個，就是指定了client_hosts的 abc.com 這個域名底下，iuser有被定義的資料，再轉成list</p>
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<pre><code>- name: get internet user list
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set_fact:
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iuser_list: "{{ ch['client_host']['abc.com']|selectattr('iuser','defined')|list }}"
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</code></pre>
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<p>然後就可以用來做condition了</p>
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<pre><code>- name: copy environment block to /etc/environment
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copy:
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content: |
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PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
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all_proxy="{{ proxy_env }}"
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http_proxy="{{ proxy_env }}"
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https_proxy="{{ proxy_env }}"
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no_proxy="localhost,127.0.0.1,192.168.1.1/16,.xyz.com,.abc.com"
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dest: /etc/environment
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when: item.ipv4 == ansible_default_ipv4.address
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with_items: "{{ iuser_list }}"
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</code></pre>
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