- name: Check if the MariaDB already exists
  shell: ps -ef | grep -v mysqld_exporter | grep -v grep | grep mysqld | wc -l
  register: process_out
  
- name: Check if the MariaDB already exists
  shell: netstat -anlp | egrep "3306" | grep LISTEN | wc -l
  register: port_out

- name: To terminate execution
  fail:
   msg: "MariaDB on node {{ inventory_hostname }} is not started. Please check"
  run_once: true
  delegate_to: 127.0.0.1 
  when: process_out.stdout != '1' or port_out.stdout != '1'