Ansible to connect to certain switchports on Cisco 2960

[Jason]

I am working on a project that would require me to bump (shutdown and re-enable) switchports that are connected to an Access Point. 

I have created a playbook to run a command "show cdp neighbours" on the switch, and that output would look like:

What I want to do, is to use ansible to only run a command (ansible play) on Gig 1/0/19 in this case. For other switches, it may be more switchports and maybe in different format (eg. Gi 2/0/35). 

Is there a way to filter ansible output by looking for 'AIR-AP280' and then extract that corresponding Local Interface (switchport number)?

Or if there is another way to get done what I want, then great. 

Any suggestions/recommendations?

It is over 50 switches, so it would be great if ansible can do what I want to do. 

[J C]

I would use the genie module and run the show cdp neighbor command. Then set fact and use that with the when command.

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[Jason]

Thanks. If you don't mind me asking because I am not familiar with this, can you give me an example of how to use the set fact and when statement for my case? 

On Friday, June 19, 2020 at 11:22:31 PM UTC-4, J C wrote:

I would use the genie module and run the show cdp neighbor command. Then set fact and use that with the when command.

On Fri, Jun 19, 2020, 10:05 PM Jason <jasonno...@gmail.com> wrote:

I am working on a project that would require me to bump (shutdown and re-enable) switchports that are connected to an Access Point. 

I have created a playbook to run a command "show cdp neighbours" on the switch, and that output would look like:

What I want to do, is to use ansible to only run a command (ansible play) on Gig 1/0/19 in this case. For other switches, it may be more switchports and maybe in different format (eg. Gi 2/0/35). 

Is there a way to filter ansible output by looking for 'AIR-AP280' and then extract that corresponding Local Interface (switchport number)?

Or if there is another way to get done what I want, then great. 

Any suggestions/recommendations?

It is over 50 switches, so it would be great if ansible can do what I want to do. 

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[J C]

Something like that I suppose. 

#Sets a varaiable for cdp neighbor detail

  - name: Run show cdp neighbors command

    ios_command:

      commands:

        - show cdp neighbors detail

    register: neighbors

# Using the Genie Filter Plugin from the Genie Parse Role

# Set pyats_neighbors as a dictionary

  - name: Set fact with Genie Filter Plugin

    set_fact:

      pyats_neighbors: "{{ neighbors['stdout'][0] | clay584.genie.parse_genie(command='show cdp neighbors detail', os='ios') }}"

  - name: Add interface desription

    ios_interfaces:

      config:

        - name: "{{ item.value.local_interface }}"

          description: "{{ item.value.device_id }} - {{ item.value.port_id }}"

      state: merged

    loop: "{{ q('dict', pyats_neighbors.index) }}"

    when: item.value.port_id is "AIR-AP280"

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[Jason]

Thanks alot. 

I have been getting this error for the past few days when trying to use genie:

fatal: [SW1]: FAILED! => {
    "msg": "template error while templating string: no filter named 'clay584.genie.parse_genie'. String: {{ neighbors['stdout'][0] | clay584.genie.parse_genie(command='show cdp neighbors', os='ios') }}"
}

This is my playbook (what you sent but I needed to import the role first):

- hosts: uwioc-switches
  gather_facts: no
  tasks:
    - name: Import role
      include_role:
        name: clay584.parse_genie

    - name: Run show cdp neighbors

      ios_command:
        commands:
          - show cdp neighbors

      register: neighbors

# Using the Genie Filter Plugin from the Genie Parse Role
# Set pyats_neighbors as a dictionary
    - name: Set fact with Genie

    - name: Import role
      include_role:
        name: clay584.parse_genie

    - name: Run show cdp neighbors

      ios_command:
        commands:
          - show cdp neighbors

      register: neighbors

# Using the Genie Filter Plugin from the Genie Parse Role
# Set pyats_neighbors as a dictionary
    - name: Set fact with Genie Filter Plugin
      set_fact:

        pyats_neighbors: "{{ neighbors['stdout'][0] | clay584.genie.parse_genie(command='show cdp neighbors', os='ios') }}"


    - name: Add interface description

      ios_interfaces:
        config:
          - name: "{{ item.value.local_interface }}"
            description: "{{ item.value.device_id }} - {{ item.value.port_id }}"
        state: merged
      loop: "{{ q('dict', pyats_neighbors.index) }}"
      when: item.value.port_id is "AIR-AP280"

My python version is 3.6.8 and Ansible is 2.9.9

I followed this guide to install the necessary libraries:

https://developer.cisco.com/codeexchange/github/repo/clay584/parse_genie/ 

The error still persists.  Also posted the issue on GitHub. Not sure if it is bug in the parsing library. 

Any assistance would greatly be appreciated. 

Thanks.

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[J C]

I am using the collection not the role.  So it looks like this at the top.  Had to add the interpreter variable because Ansible kept using Python 2

---

- name: Interface Descrpitions

  hosts: all

  gather_facts: no

  connection: network_cli

  collections:

    - clay584.genie

  vars:

    ansible_python_interpreter: "{{ ansible_playbook_python }}"

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[Jason]

This error shows:

fatal: [SW1]: FAILED! => {"msg": "template error while templating string: no filter named 'clay584.genie.parse_genie'. String: {{ neighbors['stdout'][0] | clay584.genie.parse_genie(command='show cdp neighbors', os='ios') }}"}

This is the full playbook I am using:

---

- name: Interface Descrpitions

  hosts: uwioc-switches

  gather_facts: no

  connection: network_cli

  collections:

    - clay584.genie

  vars:

    ansible_python_interpreter: "{{ ansible_playbook_python }}"

  tasks:

    - name: Run show cdp neighbors

      ios_command:

        commands:

          - show cdp neighbors

      register: neighbors

# Using the Genie Filter Plugin from the Genie Parse Role

# Set pyats_neighbors as a dictionary

    - name: Set fact with Genie Filter Plugin

      set_fact:

       pyats_neighbors: "{{ neighbors['stdout'][0] | clay584.genie.parse_genie(command='show cdp neighbors', os='ios') }}"

Tried changing vars to set_facts too, but didn't work. 

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[J C]

Not sure it seems like it is looking for the filter.  Have you used a collection before?  Is the collections_path defined in the ansible.cfg?

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[Jason]

No I have never used a collection before. So my ansible.cfg is currently to the default

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[J C]

You need to add a new line under [defaults]

collections_paths = /path/to/collections

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[Jason]

I added it. Now this shows:

fatal: [SW1]: FAILED! => {

    "msg": "parse_genie: Genie package is not installed. To install, run 'pip install genie'."

}

When I do pip or pip3 install genie, it says requirements already satisfied (as I already installed it). 

Just to show you what my directories look like:

And under [defaults] in my ansible.cfg:

collections_paths = /etc/ansible/collections/ansible_collections/ 

Tried putting a less specific and then a more specifc path to the collections folder also. (= /etc/ansible/collections, = /etc/ansible/collections/ansible_collections/clay584/genie)

Prior to this, I did a  ansible-galaxy collection install clay584.genie to install the collection and it said this:

Installing 'clay584.genie:0.1.11' to '/root/.ansible/collections/ansible_collections/clay584/genie'

Did I do anything wrong?

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[J C]

Well at this point I would probably remove genie.  Then create a virtual python environment.  Run the pip install commands and see if that works for you.  If you are still running into issues I would reach out to the guys who made genie - I think Clay is in the group there too.

https://eurl.io/#r18UzrQVr

---------- Forwarded message ---------
From: Jason <jasonno...@gmail.com>
Date: Tue, Jun 23, 2020, 12:30 PM
Subject: Re: [ansible-project] Ansible to connect to certain switchports on Cisco 2960
To: Ansible Project <ansible...@googlegroups.com>

I added it. Now, this shows:

fatal: [SW1]: FAILED! => {

    "msg": "parse_genie: Genie package is not installed. To install, run 'pip install genie'."

}

When I do pip or pip3 install genie, it says requirements already satisfied (as I already installed it). 

Just to show you what my directories look like:

And under [defaults] in my ansible.cfg:

collections_paths = /etc/ansible/collections/ansible_collections/ 

Tried putting a less specific and then a more specifc path to the collections folder also. (= /etc/ansible/collections, = /etc/ansible/collections/ansible_collections/clay584/genie)

Before this, I did a  ansible-galaxy collection install clay584.genie to install the collection and it said this:

Installing 'clay584.genie:0.1.11' to '/root/.ansible/collections/ansible_collections/clay584/genie'

Did I do anything wrong?

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