Red Hat Ansible for Network Automation

Execute an ad hoc command that displays the host name of VyOS device leaf02.

[student@workstation proj]$ ansible -m vyos_command \
> -a "commands='sh host name'" leaf02
leaf02 | SUCCESS => {
    "changed": false,
    "stdout": [
        "vyos"
    ],
    "stdout_lines": [
        [
            "vyos"
        ]
    ]
}

Execute an ad hoc command that uses the vyos_system module to set the host name for leaf02.

[student@workstation proj]$ ansible -m vyos_system \
> -a "host_name={{ inventory_hostname }}" leaf02
leaf02 | SUCCESS => {
    "changed": true,
    "commands": [
        "set system host-name 'leaf02'"
    ]
}

Execute an ad hoc command to verify that the host name was changed as expected.

[student@workstation proj]$ ansible -m vyos_command \
> -a "commands='sh host name'" leaf02
leaf02 | SUCCESS => {
    "changed": false,
    "stdout": [
        "leaf02"
    ],
    "stdout_lines": [
        [
            "leaf02"
        ]
    ]
}

Repeat the ad hoc command that sets the host name, but this time explicitly set it back to its original value.

[student@workstation proj]$ ansible -m vyos_system \
> -a "host_name=vyos" leaf02
leaf02 | SUCCESS => {
    "changed": true,
    "commands": [
        "set system host-name 'vyos'"
    ]
}

Create a playbook named multi-vendor-set-hostname1.yml that sets the host name to inventory_hostname. The value of hosts should default to network, and the when conditional should be used in order to invoke either vyos_system or ios_system.

[student@workstation proj]$ cat multi-vendor-set-hostname1.yml
---
- name: sets hostname in a multi-vendor way
  hosts: network

  tasks:

  - name: set hostname on vyos device
    vyos_system:
      host_name: "{{ inventory_hostname }}"
    when: ansible_network_os == 'vyos'

  - name: set hostname on ios device
    ios_system:
      hostname: "{{ inventory_hostname }}"
    when: ansible_network_os == 'ios'

Perform the play in the playbook you created.

[student@workstation proj]$ ansible-playbook -l leaf02 \
> multi-vendor-set-hostname1.yml

Execute an ad hoc command to confirm that the play did in fact succeed in changing the host name.

[student@workstation proj]$ ansible -m vyos_command \
> -a "commands='sh host name'" leaf02

Execute an ad hoc command to return leaf02's host name to its original value.

[student@workstation proj]$ ansible -m vyos_system -a "host_name=vyos" leaf02
leaf02 | SUCCESS => {
    "changed": true,
    "commands": [
        "set system host-name 'vyos'"
    ]
}