我试图在Ansible中迭代level3变量。我准备了这样一个剧本:
---
- hosts: localhost
gather_facts: no
connection: local
vars:
level1:
- abc
- def
level2:
- { name: "app1", level3: ["aaaa","bbbb"]}
- { name: "app2", level3: ["eeeee"]}
tasks:
- name: test
debug: msg="{{ item.0 }} {{ item.1.name }} {{ item.2 }}"
with_nested:
- "{{ level1 }}"
- "{{ level2 }}"
- "{{ level2.level3 }}"
但是我得到错误:
PLAY [localhost] ***************************************************************************************************************************************************
TASK [test] ********************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "'list object' has no attribute 'level3'"}
PLAY RECAP *********************************************************************************************************************************************************
localhost : ok=0 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0
我的配置有什么问题?我想输出每个元素
level2.level3
并不存在。level2
是一个列表,因此例如level2.0.level3
存在。
从你的问题中我不完全确定,但我认为你在寻找的是:
- debug:
msg: "{{ item.0 }} {{ item.1.0.name }} {{ item.1.1 }}"
loop: "{{ level1 | product(level2 | subelements('level3')) }}"
如果您愿意,可以使用nested
查找来保持旧的with_
语法。生成的结果有点不同,因此您必须适应数据结构:
- debug:
msg: "{{ item.0 }} {{ item.1.name }} {{ item.2 }}"
with_nested:
- "{{ level1 }}"
- "{{ level2 | subelements('level3') }}"
,最终可以写回loop:
语法,如下所示:
- debug:
msg: "{{ item.0 }} {{ item.1.name }} {{ item.2 }}"
loop: "{{ q('nested', level1, level2 | subelements('level3')) }}"
所有的例子给出相同的结果(每次迭代的分割项,第一个命题的例子输出)
PLAY [localhost] *****************************************************************************************************************************************
TASK [debug] *********************************************************************************************************************************************
ok: [localhost] => (item=['abc', [{'name': 'app1', 'level3': ['aaaa', 'bbbb']}, 'aaaa']]) => {
"msg": "abc app1 aaaa"
}
ok: [localhost] => (item=['abc', [{'name': 'app1', 'level3': ['aaaa', 'bbbb']}, 'bbbb']]) => {
"msg": "abc app1 bbbb"
}
ok: [localhost] => (item=['abc', [{'name': 'app2', 'level3': ['eeeee']}, 'eeeee']]) => {
"msg": "abc app2 eeeee"
}
ok: [localhost] => (item=['def', [{'name': 'app1', 'level3': ['aaaa', 'bbbb']}, 'aaaa']]) => {
"msg": "def app1 aaaa"
}
ok: [localhost] => (item=['def', [{'name': 'app1', 'level3': ['aaaa', 'bbbb']}, 'bbbb']]) => {
"msg": "def app1 bbbb"
}
ok: [localhost] => (item=['def', [{'name': 'app2', 'level3': ['eeeee']}, 'eeeee']]) => {
"msg": "def app2 eeeee"
}
PLAY RECAP ***********************************************************************************************************************************************
localhost : ok=1 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0