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Accepted
Hardguy
Asked: 2022-12-01 12:32:41 +0800 CST

如何向ansible playbook中的命令添加条件强制？

  • 772

我只想为projectA下面剧本中的项目强制复制文件。

- name: Populate /usr/local/mywork/ binaries where necessary
  copy:
    src: "output/here/usr/local/mywork/{{item}}"
    dest: "/usr/local/mywork/{{ item }}"
    force: '{{ item == "projectA" }}'
  with_items: "{{ server_files }}"

我补充道force: '{{ item == "projectA" }}'。

但它不起作用。有些部分不正确？

ansible

1 个回答

  1. Best Answer

    鉴于树

    shell> tree /tmp/test
/tmp/test
├── files
│   ├── projectA
│   ├── projectB
│   └── projectC
└── mywork
    ├── projectA
    ├── projectB
    └── projectC

2 directories, 6 files

    文件内容不同

    shell> cat /tmp/test/files/*
1
1
1

shell> cat /tmp/test/mywork/*
0
0
0

    选项力：

    • 如果为 true，则当内容与源文件不同时，将替换远程文件。

    • 如果为 false，则仅当目标不存在时才会传输文件。

    下面的剧本

    shell> cat pb.yml 
- hosts: localhost
  vars:
    server_files: [projectA, projectB, projectC]
  tasks:
    - copy:
        src: "/tmp/test/files/{{ item }}"
        dest: "/tmp/test/mywork/{{ item }}"
        force: "{{ item == 'projectA' }}"
      loop: "{{ server_files }}"

    按预期工作并仅复制文件projectA。在--check --diff模式下运行游戏给出

    shell> ansible-playbook pb.yml -CD

PLAY [localhost] *****************************************************************************

TASK [copy] **********************************************************************************
--- before: /tmp/test/mywork/projectA
+++ after: /tmp/test/files/projectA
@@ -1 +1 @@
-0
+1

changed: [localhost] => (item=projectA)
ok: [localhost] => (item=projectB)
ok: [localhost] => (item=projectC)

PLAY RECAP ***********************************************************************************
localhost: ok=1    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

    如果文件projectA的内容相同，则不会有任何变化

    shell> cat /tmp/test/files/projectA
1
shell> cat /tmp/test/mywork/projectA
1

    shell> ansible-playbook pb.yml -CD

PLAY [localhost] *****************************************************************************

TASK [copy] **********************************************************************************
ok: [localhost] => (item=projectA)
ok: [localhost] => (item=projectB)
ok: [localhost] => (item=projectC)

PLAY RECAP ***********************************************************************************
localhost: ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
    • 3

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