我在Ansible中使用dictonary检查现有文件时遇到问题。
tasks:
- name: Checking existing file id
stat: path=/tmp/{{ item.id }}.conf
with_items: "{{ file_vars }}"
register: check_file_id
- name: Checking existing file name
stat: path=/tmp/{{ item.name }}.conf
with_items: "{{ file_vars }}"
register: check_file_name
- name: Checking file exists
debug: msg='File_id exists'
when: check_file_id.stat.exists == True
- name: Checking file name exists
debug: msg='File name exists'
when: check_file_name.stat.exists == True
vars:
file_vars:
- { id: 1, name: one }
- { id: 2, name: two }
然后,如果我试图运行playbook,我收到错误:
FAILED! => {"failed": true, "msg": "The conditional check 'check_file_id.stat.exists == True' failed. The error was: error while evaluating conditional (check_file_id.stat.exists == True): 'dict' object has no attribute 'stat'\n\n
我试过调试它:
- debug: var=check_file_id
得到了:
"results": [
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"changed": false,
"invocation": {
"module_args": {
"checksum_algorithm": "sha1",
"follow": false,
"get_checksum": true,
"get_md5": true,
"mime": false,
"path": "/tmp/1.conf"
},
"module_name": "stat"
},
"item": {
"id": 1,
"name": "one"
},
"stat": {
"exists": false
}
},
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"changed": false,
"invocation": {
"module_args": {
"checksum_algorithm": "sha1",
"follow": false,
"get_checksum": true,
"get_md5": true,
"mime": false,
"path": "/tmp/2.conf"
},
"module_name": "stat"
},
"item": {
"id": 2,
"name": "two"
},
"stat": {
"exists": false
}
}
]
我哪里错了?
是否可以将stat.exists
与变量列表一起使用?
谢谢你的回答!
答案 0 :(得分:12)
问题是您在循环中注册check_file_id
。您需要阅读the documentation on using register
in a loop,其中讨论了执行此操作的含义。您的变量有一个results
键,其中包含循环每次迭代的结果。您可以在debug
输出中看到该内容。
在后续任务中,您应该迭代check_file_id.results
而不是file_vars
,如下所示:
- hosts: localhost
gather_facts: false
vars:
file_vars:
- {id: 1, name: foo}
- {id: 2, name: bar}
tasks:
- name: Checking existing file id
stat:
path: ./files/{{ item.id }}.conf
with_items: "{{ file_vars }}"
register: check_file_id
- name: Checking existing file name
stat:
path: ./files/{{ item.name }}.conf
with_items: "{{ file_vars }}"
register: check_file_name
- debug:
msg: 'file id {{item.item.id}} (name {{item.item.name}}) exists'
with_items: "{{ check_file_id.results }}"
when: item.stat.exists
- debug:
msg: 'file name {{item.item.name}} (id {{item.item.id}}) exists'
with_items: "{{ check_file_name.results }}"
when: item.stat.exists