Question

我试图在ansible 2.3.x中遍历列表列表（我有一堆返回列表上下文的项目）。我想根据寄存器变量的结果采取行动，但在使用with_items时，我似乎无法找到基本元素。我已尝试在下面的代码中进行映射，但无法访问已注册结果中的属性“path”（我希望使用with_items进行迭代）。

#!/bin/ansible-playbook
---
- name: Check state of repos and prevent updates
  hosts: localhost
  connection: local
  vars:
    basecomponents:
      - cbr
      - slc
      - gts
      - vep
      - mcp
      - lse

  tasks:

  - name: Create and enable repo if necessary
    yum_repository:
      name: MyRepo
      description: My Repo
      baseurl: http://127.0.0.1/repo/head/myrepo/x86_64/
      enabled: yes
      gpgcheck: yes
      mirrorlist_expire: 60
      state: present
  - name: remove update from last version
    find:
      paths: "/home/{{item}}/update/"
      patterns: "currentVersion.*"
    with_items: "{{basecomponents}}"
    register: findresult

   - name: remove current version
     file:
      path: "{{item.path}}"
      state: absent
     with_items: findresult.results.

  - name: Debug result
    debug:
      var: "{{item.files}}"
    with_items:
      - findresult.results
      # | map(attribute='path')| list}}

以下是我运行时的结果：

ok: [localhost] => (item=findresult.results) => {
    "findresult.results": [
        {
            "_ansible_item_result": true, 
            "_ansible_no_log": false, 
            "_ansible_parsed": true, 
            "changed": false, 
            "examined": 4, 
            "files": [
                {
                    "atime": 1500919313.0, 
                    "ctime": 1500919690.9134178, 
                    "dev": 64774, 
                    "gid": 1002, 
                    "inode": 94371970, 
                    "isblk": false, 
                    "ischr": false, 
                    "isdir": false, 
                    "isfifo": false, 
                    "isgid": false, 
                    "islnk": false, 
                    "isreg": true, 
                    "issock": false, 
                    "isuid": false, 
                    "mode": "0664", 
                    "mtime": 1500919313.0, 
                    "nlink": 1, 
                    "path": "/home/cbr/update/currentVersion.1500918030", 
                    "rgrp": true, 
                    "roth": true, 
                    "rusr": true, 
                    "size": 0, 
                    "uid": 1001, 
                    "wgrp": true, 
                    "woth": false, 
                    "wusr": true, 
                    "xgrp": false, 
                    "xoth": false, 
                    "xusr": false
                }, 
                {
                    "atime": 1500919313.0, 
                    "ctime": 1500919690.9134178, 
                    "dev": 64774, 
                    "gid": 1002, 
                    "inode": 94371969, 
                    "isblk": false, 
                    "ischr": false, 
                    "isdir": false, 
                    "isfifo": false, 
                    "isgid": false, 
                    "islnk": false, 
                    "isreg": true, 
                    "issock": false, 
                    "isuid": false, 
                    "mode": "0664", 
                    "mtime": 1500919313.0, 
                    "nlink": 1, 
                    "path": "/home/cbr/update/currentVersion.1500919311", 
                    "rgrp": true, 
                    "roth": true, 
                    "rusr": true, 
                    "size": 0, 
                    "uid": 1001, 
                    "wgrp": true, 
                    "woth": false, 
                    "wusr": true, 
                    "xgrp": false, 
                    "xoth": false, 
                    "xusr": false
                }
            ], 
            "invocation": {
                "module_args": {
                    "age": null, 
                    "age_stamp": "mtime", 
                    "contains": null, 
                    "file_type": "file", 
                    "follow": false, 
                    "get_checksum": false, 
                    "hidden": false, 
                    "paths": [
                        "/home/cbr/update/"
                    ], 
                    "patterns": [
                        "currentVersion.*"
                    ], 
                    "recurse": false, 
                    "size": null, 
                    "use_regex": false
                }
            }, 
            "item": "cbr", 
            "matched": 2, 
            "msg": ""
        }

Answer 1

你的最后一项任务非常接近。你只需要翻转路径和文件。

list.insert(-1, ...)

或者您可以使用- name: Debug result debug: var: "{{item.path}}" with_items: "{{ findresult.results | map(attribute='files') | list}}

with_subelements

Answer 2

您要访问的属性“路径”属于由键“文件”索引的列表的每个元素。在任务“从上一个版本变量中删除更新”中，您注册findresult，这是一个字典。

  - name: remove update from last version
    find:
      paths: "/home/{{item}}/update/"
      patterns: "currentVersion.*"
    with_items: "{{basecomponents}}"
    register: findresult

因此，要遍历“路径”属性，您需要首先使用键获取列表，如下所示：

   - name: remove current version
     file:
       path: "{{ item.path }}"
       state: absent
     with_items: "{{ findresult['files'] }}"

无法使用with_items循环

2 个答案: