"False" 被添加到块文件模块的块开头

Question

我编写了 ansible 任务来生成具有相同模板块但具有一些不同属性值的单个文件。该任务能够按预期生成新文件，但 "False" 在每个块的开头添加。

这是我的代码：

- name: Test to generate config file
  hosts: localhost
  tasks:
    - name: Blockfile test
      blockinfile:
        path: blockfile_test
        create: yes
        marker: no
        insertafter: EOF
        content: "{{ lookup('template', 'blockfile_template') }}"
      with_items:
        - One
        - Two
        - Three

模板：

This is test to generate new file
        Count # {{ item }}

生成的文件：

False
This is test to generate new file
        Count # One
False
This is test to generate new file
        Count # Two
False
This is test to generate new file
        Count # Three
False

ansible 命令输出：

$ ansible-playbook test.yml

PLAY [Test to generate config file] *************************************************************************************************************************

TASK [Gathering Facts] **************************************************************************************************************************************
ok: [localhost]

TASK [Blockfile test] ***************************************************************************************************************************************
changed: [localhost] => (item=One)
changed: [localhost] => (item=Two)
changed: [localhost] => (item=Three)

PLAY RECAP **************************************************************************************************************************************************
localhost                  : ok=2    changed=1    unreachable=0    failed=0

想要生成没有 "False" 字符串的文件。

Answer 1

blockinfile 模块不应该在没有标记线的情况下工作。
为了使该模块正常工作，marker 选项必须包含 {mark} 单词，该单词将被 BEGIN/END 替换，以便后续的 Ansible 运行可以是幂等的。

blockinfile 的正确用法可以是：

- name: Blockfile test
  blockinfile:
    path: blockfile_test
    create: yes
    marker: "; {mark} block for item {{ item }}"
    insertafter: EOF
    content: "{{ lookup('template', 'blockfile_template') }}"
  with_items:
    - One
    - Two
    - Three

结果将是：

; BEGIN block for item One
This is test to generate new file
        Count # One
; END block for item One
; BEGIN block for item Two
This is test to generate new file
        Count # Two
; END block for item Two
; BEGIN block for item Three
This is test to generate new file
        Count # Three
; END block for item Tree

P.S。而且您可能不想使用 blockinfile 生成配置，只需制作一些带有内部循环的 config.j2 模板来迭代您的项目并调用一次 template 模块。

Answer 2

将标记设置为“”，它会在块的开头添加空行

- name: Blockfile test
  blockinfile:
    path: blockfile_test
    create: yes
    marker: ""
    insertafter: EOF
    content: "{{ lookup('template', 'blockfile_template') }}"
  with_items:
    - One
    - Two
    - Three

输出：

This is test to generate new file
        Count # One

This is test to generate new file
        Count # Two

This is test to generate new file
        Count # Three

"False" 被添加到块文件模块的块开头

"False" gets added at the start of block for blockfile module

ansible

ansible-template