Ansible documentation for set_fact module says "Set cacheable to yes to 
save variables across executions using a fact cache". So my understanding 
is that setting 'cacheable: yes' would make the contents of custom variable 
available across differnt playbooks (as opposed to default behaviour of 
custom variable output being available only for current playbook).

However when i tried to use a custom variable saved in 1 playbook in 
another playbook, it didn't work. So i wonder if my understanding is 
correct? Below is playbook:


*PLAYBOOK 1:* I define a custom variable called 'my_name' and save it in 
fact cache using cacheable: yes

tasks:

    - name: GATHER INTERFACE INFO

      ios_command:

        commands: "show ip int brief"


      register: show_ip


    - set_fact:

        my_name: "{{ show_ip }}"

        cacheable: yes


*PLAYBOOK 2:* I reference earlier custom variable in 2nd playbook for 
comparison but doesn't work.

 tasks: 

     - name: GATHER INTERFACE INFO AFTER RELOAD

      ios_command:

        commands: "show ip int brief"


      register: show_ip_new


    - assert:

        that:

        - show_ip.stdout[0] | regex_findall('up') | length == 
show_ip_new.stdout[0] | regex_findall('up') | length

        fail_msg: "THERE IS INTERFACE MISMATCH. PLAYBOOK IS ENDING FOR 
CURRENT HOST."

        success_msg: "INTERFACE STATUS MATCHED"

Thanks,
Vikram

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