Ansible:如何检查本地和远程文件集的 sha1 校验和 [英] Ansible: How to Check a local and remote set of files for sha1 checksum

问题描述

我希望能够根据本地目录中的文件列表进行校验和.然后能够获取这些文件的校验和并将其与远程系统上相同文件的校验和进行比较.

I want to be able to do a checksum based on a list of files in a local dir. Then be able to get those files checksum and compare it to the checksum of the same files on a remote system.

我知道我可以通过以下方式获得

I know I can get the with the following

# Local File
- stat:
   path: "{{ playbook_dir }}/roles/common/files/myfile.dat"
   checksum_algorithm: sha1
  delegate_to: localhost
  run_once: true
  register: localsha_result

# Remote file
- stat:
   path: "{{ rmt_dest_dir }}/myfile.dat"
   checksum_algorithm: sha1
  register: sha_result

并且我试图遍历我想要校验和的文件:

and I have tried to loop through the files that I want to checksum with:

# Gather Files
- name: gather names of files
  local_action: shell  ls {{ playbook_dir }}/roles/common/files/*.dat | awk -F '/' '{ print $NF }'
  register: datfiles

# Local File 
- stat:
   path: "{{ playbook_dir }}/roles/common/files/{{ item }}"
   checksum_algorithm: sha1
  with_items: "{{ datfiles.stdout_lines }}"
  delegate_to: localhost
  run_once: true
  register: localsha_result

# Remote file
- stat:
   path: "{{ rmt_dest_dir }}/{{ item }}"
   checksum_algorithm: sha1
  with_items: "{{ datfiles.stdout_lines }}"
  register: sha_result

- name: check sha1
  fail: msg="SHA1 checksum fails"
  when: not sha_result.stat.checksum is defined or not sha_result.stat.checksum == "{{ item.stat.checksum }}"
with_items: "{{ datfiles.stdout_lines}}"

推荐答案

您只需执行两个任务即可完成此操作:(1) 注册本地校验和，(2) 检查远程校验和，将它们与相应的本地进行比较:

You can do this with just two tasks: (1) register local checksums, (2) check remote checksums comparing them to corresponding local:

---
- hosts: test-server
  tasks:
    - stat:
        path: "{{ item }}"
        checksum_algorithm: sha1
      delegate_to: localhost
      with_fileglob: /tmp/*.dat
      register: local_files
    - stat:
        path: "/tmp/{{ item.stat.path | basename }}"
        checksum_algorithm: sha1
      failed_when: remote_files.stat.checksum != item.stat.checksum
      # failed_when condition checked after every iteration
      #   and remote_files here is a result of individual task
      #   but after loop is finished, remote_files is a cobination
      #   of all iterations results
      with_items: "{{ local_files.results }}"
      register: remote_files
      loop_control:
        label: "{{ item.stat.path | basename }}"

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