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<title> [ansible] 引用事先定義好的yaml檔裡面的變數 - Ansible Selectattr From List in Dictionary file | MCの飄狂山莊㊣</title>
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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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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
<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>
<p>這次還是用selectattr 來處理，希望下次能夠記得&hellip;</p>
<p></p>
<p>首先是導入的yaml檔案，內容長這樣</p>
<pre><code>client_hosts:
abc.com:
- host: hqdc021
ipv4: 192.168.11.21
- host: hqdc022
ipv4: 192.168.11.22
- host: hqdc023
ipv4: 192.168.11.23
- host: hqdc024
ipv4: 192.168.11.24
- host: hqdc025
iuser: True
ipv4: 192.168.11.25
user: [yangj]
- host: hqdc026
ipv4: 192.168.11.26
user: [changp, joy]
- host: hqdc027
ipv4: 192.168.11.27
xyz.com:
- host: dc021
iuser: True
ipv4: 192.168.1.21
user: [tim]
- host: dc022
ipv4: 192.168.1.22
- host: dc023
ipv4: 192.168.1.23
- host: dc024
ipv4: 192.168.1.24
- host: dc025
ipv4: 192.168.1.25
user: [eric]
- host: dc026
ipv4: 192.168.1.26
user: [erica]
- host: dc027
ipv4: 192.168.1.27
</code></pre>
<p>在playbook中，首先先導入這個檔案</p>
<pre><code>- name: load client_host
include_vars:
file: client_hosts.yml
name: ch
</code></pre>
<p>然後用這個剛剛導入的檔案，去做出想要的清單</p>
<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>
<pre><code>- name: get internet user list
set_fact:
iuser_list: &quot;{{ ch['client_host']['abc.com']|selectattr('iuser','defined')|list }}&quot;
</code></pre>
<p>然後就可以用來做condition了</p>
<pre><code>- name: copy environment block to /etc/environment
copy:
content: |
PATH=&quot;/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games&quot;
all_proxy=&quot;{{ proxy_env }}&quot;
http_proxy=&quot;{{ proxy_env }}&quot;
https_proxy=&quot;{{ proxy_env }}&quot;
no_proxy=&quot;localhost,127.0.0.1,192.168.1.1/16,.xyz.com,.abc.com&quot;
dest: /etc/environment
when: item.ipv4 == ansible_default_ipv4.address
with_items: &quot;{{ iuser_list }}&quot;
</code></pre>
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