可见的搜索和查询

Question

更新larsks的建议。使用以下结构

"intf_output_ios": {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python3"
},
"changed": false,
"failed": false,
"gathered": [
{
"name": "GigabitEthernet0/0"
},
{
"mode": "trunk",
"name": "GigabitEthernet0/1",
"trunk": {
"allowed_vlans": [
"10",
"20",
"30",
"99",
"100"
],
"encapsulation": "dot1q"
}
},
{
"mode": "trunk",
"name": "GigabitEthernet0/2",
"trunk": {
"allowed_vlans": [
"10",
"20",
"30",
"99",
"100"
],
"encapsulation": "dot1q"
}
},
{
"access": {
"vlan": 30
},
"mode": "access",
"name": "GigabitEthernet0/3"
},
{
"name": "GigabitEthernet1/0"
},
{
"name": "GigabitEthernet1/1"
},
{
"name": "GigabitEthernet1/2"
},
{
"name": "GigabitEthernet1/3"
},
{
"name": "GigabitEthernet2/0"
},
{
"name": "GigabitEthernet2/1"
},
{
"name": "GigabitEthernet2/2"
},
{
"name": "GigabitEthernet2/3"
},
{
"name": "GigabitEthernet3/0"
},
{
"name": "GigabitEthernet3/1"
},
{
"name": "GigabitEthernet3/2"
},
{
"access": {
"vlan": 99
},
"mode": "access",
"name": "GigabitEthernet3/3"
}
]
}

如果只打印VLAN 30中的端口，使用以下命令?

- name: "P901T6: Set fact to include only access ports - IOS"
set_fact:
access_ports_ios_2: "{{ intf_output_ios | json_query(query) }}"
vars:
query: >-
gathered[?access.vlan==`30`]
- name: "P901T7: Dump list of access ports - IOS"
debug:
var=access_ports_ios_2

注意:重要的是使用30(带反引号)而不是'30'

我已经通过https://docs.ansible.com/ansible/latest/user_guide/playbooks_filters.html#managing-list-variables没有真正理解如何解决这个问题。如果有人有一些好的链接，那将是非常有用的

具有类似

的结构

ok: [access01] => {
"access_ports_ios": [
{
"access": {
"vlan": 30
},
"mode": "access",
"name": "GigabitEthernet0/3"
},
{
"access": {
"vlan": 99
},
"mode": "access",
"name": "GigabitEthernet3/3"
}
]
}

获取vlan 30中的端口使用:

- debug:
var: access_ports_ios|json_query(query)
vars:
query: >-
[?access.vlan==`30`]

注意:如果您想为vlan使用变量，而不是硬编码它。我必须这样做:

- name: Debug 4
debug:
var: access_ports_ios|json_query('[?access.vlan==`{{ src_vlan | int}}`]')

Answer 1

您要求gathered.access，但gathered是一个列表，没有access属性。您需要"gathered中access.vlan为30的所有项"(注意access.vlan的值是一个整数，而不是字符串):

- debug:
var: intf_output_ios|json_query(query)
vars:
query: >-
gathered[?access.vlan==`30`]

给出的示例输入产生:

TASK [debug] *******************************************************************
ok: [localhost] => {
"intf_output_ios|json_query(query)": [
{
"access": {
"vlan": 30
},
"mode": "access",
"name": "GigabitEthernet0/3"
}
]
}

---

我要重申我经常给json_query问题的建议:使用jpterm或JMESPath网站之类的东西来根据您的实际数据测试JMESPath表达式。这样可以更容易地找出表达式可能出错的地方。