ensure the service is running or start using ansible code example

Example: ansible playbook enable service

- name: Start service httpd, if not started
  service:
    name: httpd
    state: started

- name: Stop service httpd, if started
  service:
    name: httpd
    state: stopped

- name: Restart service httpd, in all cases
  service:
    name: httpd
    state: restarted

- name: Reload service httpd, in all cases
  service:
    name: httpd
    state: reloaded

- name: Enable service httpd, and not touch the state
  service:
    name: httpd
    enabled: yes

- name: Start service foo, based on running process /usr/bin/foo
  service:
    name: foo
    pattern: /usr/bin/foo
    state: started

- name: Restart network service for interface eth0
  service:
    name: network
    state: restarted
    args: eth0