在Ansible中循环使用with_dict注册的变量 [英] Loop through a registered variable with with_dict in Ansible
本文介绍了在Ansible中循环使用with_dict注册的变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我的可读剧本如下所示:
- 命令:echo {{item}}
with_dict:
- foo
- bar
- baz
注册表: echos
注册变量echos将是一个字典:
{
changed:true,
msg:所有项目完成,
results :[
{
changed:true,
cmd:[
echo,
foo
],
delta:0:00:00.002780,
end:2014-06-08 16:57:52.843478,
invocation:{
module_args :echo foo,
module_name:command
},
item:foo,
rc:0,
开始:2014-06-08 16:57:52.840698,
stderr:,
stdout:foo
},
{
c挂起:true,
cmd:[
echo,
bar
],
delta:0:00:00.002736 ,
end:2014-06-08 16:57:52.911243,
invocation:{
module_args:echo bar,
module_name :command
},
item:bar,
rc:0,
start:2014-06-08 16:57 :52.908507,
stderr:,
stdout:bar
},
{
changed:true,
cmd:[
echo,
baz
],
delta:0:00:00.003050,
end :2014-06-08 16:57:52.979928,
invocation:{
module_args:echo baz,
module_name:command
},
item:baz,
rc:0,
start:2014-06-08 16:57:52.976878,
stderr:,
stdout:baz
}
]
}
现在,如果我想参考echos字典的foo字典元素的changed字段,我该怎么做?
解决方案
首先,你的例子有缺陷: with_dict
不能迭代列表。
但一般方法如下:
---
- 主机:localhost
gather_facts:no
任务:
- 命令:echo {{item}}
with_items:
- foo
- bar
- baz
注册表:echos
#迭代所有结果
- 调试:msg ='name {{item.item}},更改{{item.changed}}'
with_items:'{{echos .results}}'
#从'foo'元素中选择'changed'属性
- debug:msg ='foo changed? {{echos.results | selectattr(item,等于,foo)| map(attribute =changed)|第一}}'
How to refer to elements of dictionary of a registered value.
My Ansible playbook look like this :
- command: echo {{ item }}
with_dict:
- foo
- bar
- baz
register: echos
Registered variable "echos" will be a dictionary :
{
"changed": true,
"msg": "All items completed",
"results": [
{
"changed": true,
"cmd": [
"echo",
"foo"
],
"delta": "0:00:00.002780",
"end": "2014-06-08 16:57:52.843478",
"invocation": {
"module_args": "echo foo",
"module_name": "command"
},
"item": "foo",
"rc": 0,
"start": "2014-06-08 16:57:52.840698",
"stderr": "",
"stdout": "foo"
},
{
"changed": true,
"cmd": [
"echo",
"bar"
],
"delta": "0:00:00.002736",
"end": "2014-06-08 16:57:52.911243",
"invocation": {
"module_args": "echo bar",
"module_name": "command"
},
"item": "bar",
"rc": 0,
"start": "2014-06-08 16:57:52.908507",
"stderr": "",
"stdout": "bar"
},
{
"changed": true,
"cmd": [
"echo",
"baz"
],
"delta": "0:00:00.003050",
"end": "2014-06-08 16:57:52.979928",
"invocation": {
"module_args": "echo baz",
"module_name": "command"
},
"item": "baz",
"rc": 0,
"start": "2014-06-08 16:57:52.976878",
"stderr": "",
"stdout": "baz"
}
]
}
Now if i want to refer to "changed" field of "foo" dictionary element of echos dictionary , How do i do that ??
解决方案
First of all, your example is flawed: with_dict
can't iterate over list.
But general approach is as follows:
---
- hosts: localhost
gather_facts: no
tasks:
- command: echo {{ item }}
with_items:
- foo
- bar
- baz
register: echos
# Iterate all results
- debug: msg='name {{ item.item }}, changed {{ item.changed }}'
with_items: '{{ echos.results }}'
# Select 'changed' attribute from 'foo' element
- debug: msg='foo changed? {{ echos.results | selectattr("item","equalto","foo") | map(attribute="changed") | first }}'
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