Network Automation Cookbook

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We can use check mode as a switch to run or skip tasks. So, in some cases when we are running in check mode, we would not like to connect to the device and push any configuration on the device, since nothing will be changed. Using check mode, we can build our playbooks to skip these tasks, as shown in the following code block:

- name: Configure ACL on IOS-XR  hosts: all  serial: 1  tags: deploy  tasks:    - name: Backup Config      iosxr_config:        backup:      when: not ansible_check_mode    - name: Deploy ACLs      iosxr_config:        src: acl_conf.cfg        match: line      when: not ansible_check_mode

In our tasks, we added the when directive, and we are checking the value for the ansible_check_mode parameter. This parameter is set to true when we run our playbook ...