Question

对于要从远程计算机复制到本地文件夹的文件夹，您有一个列表，并且并非所有文件夹都存在。

当找不到某个文件夹时，当前方法的确会在日志上生成嘈杂的错误错误：

- set_fact:
    folders:
      - /foo
      - /bar

- synchronize:
    dest: "{{ log_path }}"
    mode: pull
    src: "{{ item }}"
    verify_host: true
  ignore_errors: true
  with_items: "{{ folders }}"

我要实现的一种行为是，当某些文件夹丢失时，rsync运行时不会出现任何错误。

当前的不良行为会产生一些噪音，例如：

rsync: change_dir "foo" failed: No such file or directory (2)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1650) [Receiver=3.1.2]
rsync: [Receiver] write error: Broken pipe (32)

我显然考虑过使用stat模块来验证文件夹是否确实存在，但是问题是我无法使用带有块的循环。

有人知道另一种干净的方法吗？

Answer 1

我真的看不到使用stat的问题所在。这是我在计算机上运行的测试手册，反映了我了解您正在尝试做的事情。

---
- name: Test selective log synchro
  hosts: localhost
  gather_facts: false
  become: true

  vars:
    remote_log_path: /var/log
    local_copy_path: /tmp
    folder_names:
      - containers
      - cups
      - IDoNotExist

  tasks:
    - name: Check which folders exist on remote
      stat:
        path: "{{ remote_log_path }}/{{ item }}"
      register: log_folders_check
      loop: "{{ folder_names }}"

    - name: Debug registered var to see structure on -v
      debug:
        var: log_folders_check
        verbosity: 1

    - name: Create a list of existing folders only
      set_fact:
        existing_log_folders: "{{ log_folders_check.results | json_query('[?(stat.exists)][item][]') }}"

    - name: Debug calculated list on -v
      debug:
        var: existing_log_folders
        verbosity: 1

    - name: Make sure local needed folders exist
      file:
        path: "{{ local_copy_path }}/{{ item }}"
        state: directory
        owner: root
        group: root
      loop: "{{ existing_log_folders }}"

    - name: Sync existing folders locally
      synchronize:
        dest: "{{ local_copy_path }}/{{ item }}/"
        src: "{{ remote_log_path }}/{{ item }}/"
        mode: pull
      with_items: "{{ existing_log_folders }}"

哪个给定（如果要查看已注册/设置的变量，请运行-v

PLAY [Test selective log synchro] *****************************************************************************************************************************************************************************************

TASK [Check which folders exist on remote] ********************************************************************************************************************************************************************************
ok: [localhost] => (item=containers)
ok: [localhost] => (item=cups)
ok: [localhost] => (item=IDoNotExist)

TASK [Debug registered var to see structure on -v] ************************************************************************************************************************************************************************
skipping: [localhost]

TASK [Create a list of existing folders only] *****************************************************************************************************************************************************************************
ok: [localhost]

TASK [Debug calculated list on -v] ****************************************************************************************************************************************************************************************
skipping: [localhost]

TASK [Make sure local needed folders exist] *******************************************************************************************************************************************************************************
ok: [localhost] => (item=containers)
ok: [localhost] => (item=cups)

TASK [Sync existing folders locally] **************************************************************************************************************************************************************************************
ok: [localhost] => (item=containers)
ok: [localhost] => (item=cups)

PLAY RECAP ****************************************************************************************************************************************************************************************************************
localhost                  : ok=4    changed=0    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0

如何在没有错误的情况下收集文件夹列表？

1 个答案: