開發者社區您好！
我一直致力于開發一些 Ansible 劇本來管理 Citrix NetScaler 配置，并希望獲得以下方面的幫助。我在一個名為的變數中定義了以下資料結構nsapp_lb_server：
nsapp_lb_server:
- name: "SRV-1"
ipaddress: "10.102.102.1"
comment: "Chewbacca"
- name: "SRV-2"
ipaddress: "10.102.102.2"
comment: "C-3PO"
- name: "SRV-3"
ipaddress: "10.102.102.3"
comment: "Obi-Wan Kenobi"
...
[ another 1200 item...]
我有以下任務：
- name: "Check variables (loop)"
ansible.builtin.assert:
that:
- ( (item.name is defined) and (item.name | length > 0) )
- ( (item.ipaddress is defined) and (item.ipaddress | ipaddr() == item.ipaddress) )
- ( (item.comment | length > 0) if (item.comment is defined) else omit )
loop: "{{ nsapp_lb_server }}"
我的問題是，當變數中有數千條記錄時nsapp_lb_server，回圈速度非常慢。任務在 30 分鐘內完成，這是一個很長的時間...... :-(
在互聯網上進行了一些挖掘之后，似乎問題是由Ansible“回圈”功能引起的，所以我想檢查是否有其他方法可以用來代替回圈。
Ansible“回圈”是否有任何替代方案可以提供相同的結果（回圈變數的條目）？我正在考慮使用 json_query，但仍然不知道如何在這種特定情況下實作它。
我的環境：
$ ansible --version
ansible [core 2.12.6]
config file = /home/ansible/.ansible.cfg
configured module search path = ['/home/ansible/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /home/ansible/ansible/lib/python3.9/site-packages/ansible
ansible collection location = /home/ansible/.ansible/collections:/usr/share/ansible/collections
executable location = /home/ansible/ansible/bin/ansible
python version = 3.9.7 (default, Sep 21 2021, 00:13:39) [GCC 8.5.0 20210514 (Red Hat 8.5.0-3)]
jinja version = 3.0.3
libyaml = True
誰能指出我正確的方向？我已經在我的代碼集上作業了很長時間，在用大資料測驗代碼后，由于運行時間的原因，代碼似乎沒用。我還檢查了分配給運行 Ansible 控制器的 VM 的硬體資源，沒有任何問題。
提前謝謝了！
uj5u.com熱心網友回復：
將此驗證作為數千個單獨的任務運行非常慢，因為它會增加大量執行和回呼開銷。您可以改為在單個任務中執行此操作，但需要注意的是更難追蹤無效的串列項：
- hosts: localhost
gather_facts: false
vars:
nsapp_lb_server: "{{ nsapp_lb_samples * 10000 }}"
nsapp_lb_samples:
- name: "SRV-1"
ipaddress: "10.102.102.1"
comment: "Chewbacca"
- name: "SRV-2"
ipaddress: "10.102.102.2"
comment: "C-3PO"
- name: "SRV-3"
ipaddress: "10.102.102.3"
comment: "Obi-Wan Kenobi"
tasks:
- assert:
that:
- nsapp_lb_server | rejectattr('name') | length == 0
- (nsapp_lb_server | map(attribute='ipaddress') | map('ipaddr')) == (nsapp_lb_server | map(attribute='ipaddress'))
- nsapp_lb_server | selectattr('comment', 'defined') | rejectattr('comment') | length == 0
對于我輸入的 30,000 個測驗條目，這將在大約 5 秒內運行。
為了更容易找到錯誤值而不使任務變得非常難看，您可以將其拆分為一系列任務：
- hosts: localhost
gather_facts: false
vars:
nsapp_lb_server: "{{ nsapp_lb_samples * 10000 }}"
nsapp_lb_samples:
- name: "SRV-1"
ipaddress: "10.102.102.1"
comment: "Chewbacca"
- name: "SRV-2"
ipaddress: "10.102.102.2"
comment: "C-3PO"
- name: "SRV-3"
ipaddress: "10.102.102.3"
comment: "Obi-Wan Kenobi"
tasks:
- name: Check for missing names
assert:
that: nsapp_lb_server | rejectattr('name', 'defined') | length == 0
fail_msg: "Bad entries: {{ nsapp_lb_server | rejectattr('name', 'defined') }}"
- name: Check for bad names
assert:
that: nsapp_lb_server | rejectattr('name') | length == 0
fail_msg: "Bad entries: {{ nsapp_lb_server | rejectattr('name') }}"
- name: Check for missing IP addresses
assert:
that: nsapp_lb_server | rejectattr('ipaddress', 'defined') | length == 0
fail_msg: "Bad entries: {{ nsapp_lb_server | rejectattr('ipaddress', 'defined') }}"
- name: Check for bad IP addresses
assert:
that: (nsapp_lb_server | map(attribute='ipaddress') | map('ipaddr')) == (nsapp_lb_server | map(attribute='ipaddress'))
fail_msg: "Suspicious values: {{ nsapp_lb_server | map(attribute='ipaddress') | map('ipaddr') | symmetric_difference(nsapp_lb_server | map(attribute='ipaddress')) }}"
- name: Check for bad comments
assert:
that: nsapp_lb_server | selectattr('comment', 'defined') | rejectattr('comment') | length == 0
fail_msg: "Bad entries: {{ nsapp_lb_server | selectattr('comment', 'defined') | rejectattr('comment') }}"
對于 30,000 個測驗條目的相同串列，這將在大約 12 秒內運行。
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