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如何在ansible playbook中向命令添加条件强制？

tag-icon • tag-icon ansible yaml
如何在ansible playbook中向命令添加条件强制？

我只想强制复制projectA以下剧本中的项目的文件。

- 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" }}'。

但这不起作用。某些部分不正确？

答案1

给定树

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

选项力量：

  • 如果为 true，则当内容与源文件不同时，远程文件将被替换。

  • 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项目A。正在运行该剧--检查--差异模式给出

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

如果文件内容不变，则不会发生任何变化项目A是一样的

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

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