Install mariadb via ansible on centOS

mariadb.yml

--- # Install mariadb via ansible on centOS
 - hosts: appserver
   user: test
   sudo: yes
   vars:
     mysql_root_password: passwd
   tasks:
    - name: Install MYSQL
      yum:
        name: mariadb-server #debian: mysql-server
        state: present
    - name: Install the Python MySQL Support Libraries
      yum: pkg=MySQL-python state=latest
    - name: start mysql server and enable it on reboot
      service: name=mariadb state=started enabled=true #debian: mysql
    - name: update mysql root password for all root accounts
      mysql_user:
        name: root
        host: "{{ item }}"
        password: "{{ mysql_root_password }}"
        login_user: root
        login_password: "{{ mysql_root_password }}"
        check_implicit_admin: yes
        priv: "*.*:ALL,GRANT"
      with_items:
        - "{{ ansible_hostname }}"
        - 127.0.0.1
        - ::1
        - localhost
        - name: Copy the root credentials as .my.cnf file
      template: src=root.cnf.j2 dest=~/.my.cnf mode=0600
    - name: Create a New Test DB called MyNewDB
      mysql_db: name=MyNewDB state=present login_user=root login_password={{ mysql_root_password }}
      
#
#
#templates/root.cnf.j2
#
#[client]
#user=root
#password={{ mysql_root_pass }}

It looks like the error is because line 30 needs to be outdented 4 spaces, currently it is inside the "with_items" block.