Question

或者我应该问：如何只评估一次值？

Table name: images

id      project_name        imagelink       img_timestamp
1       Travier             image1          (timestamp of upload)
2       Travier             image2          (timestamp of upload)
3       Travier             image3          (timestamp of upload)
4       Travier             image4          (timestamp of upload)
5       Collosion           image1          (timestamp of upload)
6       Collosion           image2          (timestamp of upload)
7       Collosion           image3          (timestamp of upload)

每个调试语句将打印出不同的值，例如：

- name: Demo
  hosts: localhost
  gather_facts: False
  vars:
    my_pass: "{{ lookup('password', '/dev/null length=15 chars=ascii_letters') }}"
  tasks:
  - debug:
      msg: "{{ my_pass }}"
  - debug:
      msg: "{{ my_pass }}"
  - debug:
      msg: "{{ my_pass }}"

ansible 2.3.2.0

Answer 1

使用set_fact分配永久事实：

- name: Demo
  hosts: localhost
  gather_facts: False
  vars:
    pwd_alias: "{{ lookup('password', '/dev/null length=15 chars=ascii_letters') }}"
  tasks:
    - set_fact:
        my_pass: "{{ pwd_alias }}"
    - debug:
        msg: "{{ my_pass }}"
    - debug:
        msg: "{{ my_pass }}"
    - debug:
        msg: "{{ my_pass }}"

Answer 2

我一直在这样做，从来没有问题。

- name: Demo
  hosts: localhost
  gather_facts: False 

  tasks:
   - set_fact:
       my_pass: "{{ lookup('password', '/dev/null length=15 chars=ascii_letters') }}"
   - debug:
       msg: "{{ my_pass }}"

Answer 3

查找密码很好，但是如果你有密码规范，比如它必须包含特定字符，或者不能包含大写......如果需要，查找也不保证密码将包含特殊字符...

我以自定义 jinja 过滤器结束，这可能对某人有所帮助（对我来说很好用 :)）

https://gitlab.privatecloud.sk/vladoportos/custom-jinja-filters

如何用ansible生成随机密码

3 个答案: