https://docs.ansible.com/ansible/latest/network/index.html

Hostfile:

cat /etc/ansible/inventory/host-file

[routers]

router-1 ansible_host=192.168.1.57

router-2 ansible_host=192.168.1.58

and Variables

cat /etc/ansible/inventory/host-file

[routers]

router-1 ansible_host=192.168.1.57

router-2 ansible_host=192.168.1.58

[routers:vars]

ansible_network_os=ios

ansible_user=ansible

ansible_password=cisco123

ansible_network_os- Informs Ansible which Network platform this hosts corresponds to.

ansible_user - The user to connect to the remote device

ansible_password - The password for the user.

Playbook which runs 'show version | incl Version' command on both routers and show us the output.

---

- name: Cisco show version example

hosts: routers

gather_facts: false

connection: network_cli

tasks:

- name: run show version on the routers

ios_command:

commands: show version | incl Version

register: output

- name: print output

debug:

var: output.stdout_lines

YAML file starts with ---

name - Any arbitrary name

hosts - Referring to the inventory group called 'routers'

gather_facts - We don't need to gather any information from the routers. This may be useful when working with servers.

connection - Playbook is run against a network device.

register - You can create variables from the output of an Ansible task with the task keyword register. You can use registered variables in any later tasks in your play

debug - This module prints statements during execution.

stdout_lines - Ansible will print the output in an easy to readable format.

We are running two tasks, first one runs show version | incl Version on both routers and saves the output in a variable called output.

The Second task prints the variable ouput in a nice format.

Run multiple 'show commands' at once

You can run multiple show commands within the same task.

- name: Cisco ip interface brief + ip route

hosts: routers

gather_facts: false

connection: network_cli

tasks:

- name: run show ip interface brief + ip route

ios_command:

commands:

- show ip interface brief

- show ip route

register: output

- name: print output

debug:

var: output.stdout_lines

Ansible Network Examples

https://docs.ansible.com/ansible/latest/network/user_guide/network_best_practices_2.5.html