Ansible compare stdout with a variable - ansible

Question

I have a questions since I am giving crazy. I want to compare stdout result to one variable storaged in my vars file.
For instance, instead of using the variable but the string ( The IP 22.22.2.2), it works:
Nets.yml
- List_nets_find:
- host 22.22.2.2
Playbook:
---
- name: Black List
hosts: routers
gather_facts: false
vars_files:
- vars/Nets.yml
tasks:
- name: Check the object-group
ios_command:
commands:
- command: "show object-group BLOCK-LIST"
register: output
tags:
- see
- debug:
msg: included
when: output.stdout is search('22.22.2.2')
tags:
- see
Result:
TASK [debug] **************************************************************************************************************************************************************************************
skipping: [Router1]
ok: [Router3] => {
"msg": "included"
}
ok: [Router2] => {
"msg": "included"
}
But instead of using the string, I use the Variable, it does not work.
- name: Black List
hosts: routers
gather_facts: false
vars_files:
- vars/Nets.yml
tasks:
- name: Check the object-group
ios_command:
commands:
- command: "show object-group BLOCK-LIST"
register: output
tags:
- see
- debug:
msg: included
when: output.stdout is search('{{List_net_find}}')
tags:
- see
This is the error:
fatal: [Router1]: FAILED! => {"msg": "The conditional check 'output.stdout is search('{{List_net_find}}')' failed. The error was: error while evaluating conditional (output.stdout is search('{{List_net_find}}')): 'List_net_find' is undefined\n\nThe error appears to be in '/home/ansible/Ios_ACL_LAB/object-group.yml': line 23, column 10, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n - see\n - debug:\n ^ here\n"}
fatal: [Router3]: FAILED! => {"msg": "The conditional check 'output.stdout is search('{{List_net_find}}')' failed. The error was: error while evaluating conditional (output.stdout is search('{{List_net_find}}')): 'List_net_find' is undefined\n\nThe error appears to be in '/home/ansible/Ios_ACL_LAB/object-group.yml': line 23, column 10, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n - see\n - debug:\n ^ here\n"}
fatal: [Router2]: FAILED! => {"msg": "The conditional check 'output.stdout is search('{{List_net_find}}')' failed. The error was: error while evaluating conditional (output.stdout is search('{{List_net_find}}')): 'List_net_find' is undefined\n\nThe error appears to be in '/home/ansible/Ios_ACL_LAB/object-group.yml': line 23, column 10, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n - see\n - debug:\n ^ here\n"}
Any suggestion? or other way to do it?
Thanks so much!

Answer 1

Your vars/Nets.yml does not declare a variable named List_nets_find, it declares an anonymous list whose first element is a dict whose only key is named List_nets_find
If you want a variable named that, then change - List_nets_find: to be List_nets_find:
Separately, the next question you are going to ask is "why does my search not match anything" and that's because List_nets_find is a list of str, so you will want to change that test to be output.stdout is search(List_nets_find | map("regex_escape") | join("|")), using the regex_escape filter to turn those strings into something that can be safely fed into a search alternation