在Ansible剧本中循环注册变量 [英] Register Variables in Loop in an Ansible Playbook
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问题描述
我有以下两项艰巨的任务
I have two ansible tasks as follows
tasks:
- shell: ifconfig -a | sed 's/[ \t].*//;/^\(lo\|\)$/d'
register: var1
- debug: var=var1
- shell: ethtool -i {{ item }} | grep bus-info | cut -b 16-22
with_items: var1.stdout_lines
register: var2
- debug: var=var2
用于获取计算机(linux)中的接口列表并获取每个接口的总线地址.在同一本剧本中，我还有另外一项任务
which is used to get a list of interfaces in a machine (linux) and get the bus address for each. I have one more task as follows in tha same playbook
- name: Binding the interfaces
shell: echo {{ item.item }}
with_flattened: var2.results
register: var3
我希望对var2的值进行迭代，然后打印总线号.
which I expect to iterate over value from var2 and then print the bus numbers.
var2.results如下
var2.results is as follows
"var2": {
"changed": true,
"msg": "All items completed",
"results": [
{
"changed": true,
"cmd": "ethtool -i br0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005778",
"end": "2015-04-14 20:29:47.122203",
"invocation": {
"module_args": "ethtool -i br0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "br0:",
"rc": 0,
"start": "2015-04-14 20:29:47.116425",
"stderr": "",
"stdout": "",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp13s0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005862",
"end": "2015-04-14 20:29:47.359749",
"invocation": {
"module_args": "ethtool -i enp13s0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp13s0:",
"rc": 0,
"start": "2015-04-14 20:29:47.353887",
"stderr": "",
"stdout": "0d:00.0",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp14s0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005805",
"end": "2015-04-14 20:29:47.576674",
"invocation": {
"module_args": "ethtool -i enp14s0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp14s0:",
"rc": 0,
"start": "2015-04-14 20:29:47.570869",
"stderr": "",
"stdout": "0e:00.0",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp15s0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005873",
"end": "2015-04-14 20:29:47.875058",
"invocation": {
"module_args": "ethtool -i enp15s0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp15s0:",
"rc": 0,
"start": "2015-04-14 20:29:47.869185",
"stderr": "",
"stdout": "0f:00.0",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp5s0f1: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005870",
"end": "2015-04-14 20:29:48.112027",
"invocation": {
"module_args": "ethtool -i enp5s0f1: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp5s0f1:",
"rc": 0,
"start": "2015-04-14 20:29:48.106157",
"stderr": "",
"stdout": "05:00.1",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp5s0f2: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005863",
"end": "2015-04-14 20:29:48.355733",
"invocation": {
"module_args": "ethtool -i enp5s0f2: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp5s0f2:",
"rc": 0,
"start": "2015-04-14 20:29:48.349870",
"stderr": "",
"stdout": "05:00.2",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp5s0f3: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005829",
"end": "2015-04-14 20:29:48.591244",
"invocation": {
"module_args": "ethtool -i enp5s0f3: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp5s0f3:",
"rc": 0,
"start": "2015-04-14 20:29:48.585415",
"stderr": "",
"stdout": "05:00.3",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp9s0f0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005943",
"end": "2015-04-14 20:29:48.910992",
"invocation": {
"module_args": "ethtool -i enp9s0f0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp9s0f0:",
"rc": 0,
"start": "2015-04-14 20:29:48.905049",
"stderr": "",
"stdout": "09:00.0",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i enp9s0f1: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005863",
"end": "2015-04-14 20:29:49.143706",
"invocation": {
"module_args": "ethtool -i enp9s0f1: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "enp9s0f1:",
"rc": 0,
"start": "2015-04-14 20:29:49.137843",
"stderr": "",
"stdout": "09:00.1",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i lo: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005856",
"end": "2015-04-14 20:29:49.386044",
"invocation": {
"module_args": "ethtool -i lo: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "lo:",
"rc": 0,
"start": "2015-04-14 20:29:49.380188",
"stderr": "Cannot get driver information: Operation not supported",
"stdout": "",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i virbr0: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.005859",
"end": "2015-04-14 20:29:49.632356",
"invocation": {
"module_args": "ethtool -i virbr0: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "virbr0:",
"rc": 0,
"start": "2015-04-14 20:29:49.626497",
"stderr": "",
"stdout": "",
"warnings": []
},
{
"changed": true,
"cmd": "ethtool -i virbr0-nic: | grep bus-info | cut -b 16-22",
"delta": "0:00:00.024850",
"end": "2015-04-14 20:29:49.901539",
"invocation": {
"module_args": "ethtool -i virbr0-nic: | grep bus-info | cut -b 16-22",
"module_name": "shell"
},
"item": "virbr0-nic:",
"rc": 0,
"start": "2015-04-14 20:29:49.876689",
"stderr": "",
"stdout": "",
"warnings": []
}
]
我的目标是获取上述每个项目中stdout的值，例如("stdout":"09:00.0").我尝试给
My objective is to get the value of stdout in each item above for example ("stdout": "09:00.0") . I tried giving something like
- name: Binding the interfaces
shell: echo {{ item.item.stdout}}
with_flattened: var2.results
# with_indexed_items: var2.results
register: var3
但是，这不能正确地在stdout中提供总线值.当第二个变量是and indexed list时，如下面给出的那样，在列出任务中变量值的变量方面提供了有益的帮助.我试图避免使用诸如item [0]之类的直接索引编号，因为接口的数量是动态的，并且直接索引可能会导致意外的结果.
But this is not giving the bus values in stdout correctly. Appreciate help in listing the variable of variable value in task as given below when the second variable is and indexed list. I am trying to avoid direct index numbering such as item[0] because the number of interfaces are dynamic and direct indexing may result in unexpected outcomes.
谢谢
推荐答案
这就是您要寻找的内容:
Is this what you're looking for:
- hosts: localhost
tags: s21
gather_facts: no
vars:
images:
- foo
- bar
tasks:
- shell: "echo result-{{item}}"
register: "r"
with_items: "{{images}}"
- debug: var=r
- debug: msg="item.item={{item.item}}, item.stdout={{item.stdout}}, item.changed={{item.changed}}"
with_items: "{{r.results}}"
- debug: msg="Gets printed only if this item changed - {{item}}"
when: "{{item.changed == true}}"
with_items: "{{r.results}}"
来源:在Ansible剧本的with_items循环中注册变量
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