使用 Ansible 捕获 VLAN 标记信息

Question

我是 Ansible 新手，我需要有关我正在编写的代码的帮助。我需要捕获此戴尔交换机命令的输出：

显示接口交换机端口 |查找名称：| 802.1Q 除外标记： |除了VLAN

这会产生这个：

Name: GigabitEthernet 1/1
U       1641
T       1007,1076




Name: GigabitEthernet 1/2
U       1641
T       1007,1076




Name: GigabitEthernet 1/3
U       1641
T       1007,1076

并将这些内容放入字典中，其中键是接口名称，其中值未标记为 U 的内容，标记为 T 的内容

这是我正在运行的剧本：

---
     - hosts: [dellos9]
      connection: network_cli
      gather_facts: no

      tasks:
      - name: Include secrets and vars
        include_vars: dell_vars.yml

      - name: "Get Dell EMC OS9 VLAN info"
        dellos9_command:
          commands:
            - 'show interfaces switchport | find Name: | except 802.1QTagged: | except Vlan'
        register: switchport_output

      - name: Parsing Command_9 output
        set_fact:
          output_items: "{{  switchport_output.stdout_lines[0] | map('regex_findall','[\\S]+') | list | select() }}"
        when:  switchport_output.stdout_lines is defined

      - name: Process output_items and set variables
        set_fact:
          my_int: "{{ item.1 + ' ' + item.2 if item.0 == 'Name:' }}"
          my_untagged: "{{ item.1 if item.0 == 'U' }}"
          my_tagged: "{{ item.1 if item.0 == 'T' }}"
        loop: "{{ output_items }}"

      - name: Display interface details
        debug:
          msg: "Interface: {{ my_int }} Untagged: {{ my_untagged }} Tagged: {{ my_tagged }}"

希望有经验的人可以帮助我。 TIA

这是我运行剧本得到的输出：

ok: [switch] => (item=['Name:', 'GigabitEthernet', '1/1'])
ok: [switch] => (item=['U', '1641'])
ok: [switch] => (item=['T', '1007,1076'])
ok: [switch] => (item=['Name:', 'GigabitEthernet', '1/2'])
ok: [switch] => (item=['U', '1641'])
ok: [switch] => (item=['T', '1007,1076'])
ok: [switch] => (item=['Name:', 'GigabitEthernet', '1/3'])
ok: [switch] => (item=['U', '1641'])
ok: [switch] => (item=['T', '1007,1076'])
TASK [Display interface details] **********************************************************************************************************************************
ok: [switch] => {
    "msg": "Interface:  Untagged:  Tagged: 1007,1076"
}

Answer 1

输入数据的结构使得这是一个仅用 Ansible 来解决的相对棘手的问题。如果将解析逻辑移至 Python 过滤器中，您的生活将会变得更加轻松。如果我们将以下内容放入

filter_plugins.filter.py

：

def parse_interfaces(v):
    interfaces = {}
    for line in v:
        if line.startswith("Name"):
            name = line.split(": ")[1]
            interfaces[name] = {}
        elif line.startswith("U"):
            interfaces[name]["untagged"] = line.split()[1].split(",")
        elif line.startswith("T"):
            interfaces[name]["tagged"] = line.split()[1].split(",")

    return interfaces


class FilterModule:
    def filters(self):
        return {"parse_interfaces": parse_interfaces}

然后我们可以写一个这样的剧本：

- hosts: localhost
  gather_facts: no
  vars:
    raw_output: |
      Name: GigabitEthernet 1/1
      U       1641
      T       1007,1076




      Name: GigabitEthernet 1/2
      U       1641
      T       1007,1076




      Name: GigabitEthernet 1/3
      U       1641
      T       1007,1076

    switchport_output:
      stdout_lines:
      - "{{ raw_output.splitlines() }}"

  tasks:

    - set_fact:
        switch_interfaces: "{{ switchport_output.stdout_lines[0] | parse_interfaces }}"

    - debug:
        var: switch_interfaces

并得到这个输出：

TASK [debug] *******************************************************************
ok: [localhost] => {
    "switch_interfaces": {
        "GigabitEthernet 1/1": {
            "tagged": [
                "1007",
                "1076"
            ],
            "untagged": [
                "1641"
            ]
        },
        "GigabitEthernet 1/2": {
            "tagged": [
                "1007",
                "1076"
            ],
            "untagged": [
                "1641"
            ]
        },
        "GigabitEthernet 1/3": {
            "tagged": [
                "1007",
                "1076"
            ],
            "untagged": [
                "1641"
            ]
        }
    }
}

PLAY RECAP *********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0