ansible/playbooks/test_replace.yml

- hosts: nas
  name: Sync mailu
  ignore_unreachable: false
  vars:
      app_path: "{{ '<MAIL_SERVER>25,143,465,993,995,587>192.168.77.106>dsadsad dsad dasdas-ddasd>TCP><WEB_SERVER>443,80>192.168.77.106>>TCP>' | regex_replace('\\<MAIL_SERVER\\>[0-9,]{1,}\\>(?P<host>[0-9.]{1,})\\>[0-9a-zA-Z\\s-]{0,}\\>TCP\\>', '\\g<host>) }}"
  tasks:
    - name: Print the gateway for each host when defined
      ansible.builtin.debug:
        msg: var is {{ app_path }}