Ansible: How to get service status by Ansible?

You can also use the service_facts module.

Example usage:

- name: collect facts about system services
  service_facts:
  register: services_state

- name: Debug
  debug:
    var: services_state

Example output:

TASK [Debug] ******************************************************
ok: [local] => {
    "services_state": {
        "ansible_facts": {
            "services": {
                "cloud-init-local.service": {
                    "name": "cloud-init-local.service",
                    "source": "systemd",
                    "state": "stopped"
                },
                "firewalld.service": {
                    "name": "firewalld.service",
                    "source": "systemd",
                    "state": "stopped"
                }
            }
        }
    }
}