Ansible

Make sure CentOS 8 EPEL repository is installed:

            

            
sudo yum install epel-release
        

Install Ansible:

            

            
sudo yum install ansible
        

.Configuring the Ansible hosts (file includes the switches to be accessed)

1. Open the vim /etc/ansible/ansible.cfg file and search for the host_key_auto_add.

2. Un-comment it as shown in the example below.

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   When using persistent connections with Paramiko, the connection runs in a background process. If the host doesn’t already have a valid SSH key, by default Ansible will prompt to add the host key. This will cause connections running in the background processes to fail. Uncomment this line to have Paramiko automatically add host keys. 
   #host_key_auto_add = TRUE
           

3. Open the /ansible/hosts file with root privileges

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   vi /etc/ansible/hosts
           

   Keep output file for future more complex Ansible configuration scenarios.

4. Add switch information to the following configuration file, based on the following examples:

   1. EX1: switch132; ansible_host=10.209.37.249; ansible_user=admin; ansible_ssh_pass=admin

   2. EX2: switch131; ansible_host=l-csi-2700-l05; ansible_user=admin; ansible_ssh_pass=admin

Create a .yml file under /etc/ansible

            

            
touch <file_name>.yml
        

Playbook example:

            

            
hosts: switch132
gather_facts: no
connection: network_cli
become: yes
become_method: enable
vars:
ansible_network_os: onyx
tasks: 
onyx_vlan:
   vlan_id: 20
   name: test-vlan
        

where:

Run the playbook.

            

            
ansible-playbook <path_of_yml file>  -i /etc/ansible/host -vvvvv –check