md-check.yml

- name: Get mdadm status and send an email
  hosts: all
  tasks:
  - name: check if MD devices exist
    stat:
      path: /dev/md
    register: md_exists 
  - name: MDADM checks
    block:
      - name: mdadm check
        become: yes
        command: >
         mdadm -D /dev/md0 
        register: md_status

      - name: Send an email if there is a failure registered
        mail:
         host: 10.0.0.4
         port: 25
         to: uros@zajc.net
         from: uzajc@hotmail.com
         subject: Ansible MDADM Alert!!!
         body: |
          This is an ansible test email from {{ ansible_hostname }}
          Mdadm status:
          {{ md_status }}
        delegate_to: home-pc
        when: '"FAILURE" in md_status.stdout[0]'
      - name: Send an email if there is a faulty device registered
        mail:
         host: 10.0.0.4
         port: 25
         to: uros@zajc.net
         from: uzajc@hotmail.com
         subject: Ansible MDADM Alert!!!
         body: |
          This is an ansible test email from {{ ansible_hostname }}
          Mdadm status:
          {{ md_status }}
        delegate_to: home-pc
        when: '"degraded" in md_status.stdout[0]'  
    when: md_exists.stat.exists