ansible play to update libc6 for GHOST and reboot serially. works for rhel and debian based distros

update_libc.yml

- name: Update libc6 and reboot
  hosts: all
  sudo: yes
  # Comment out to apply to all servers
  serial: 1
  tasks:

    - name: "Install packages and update cache"
      apt: name="{{ item }}" state=latest update_cache=yes
      with_items:
        - libc6
      when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'

    - name: "Install packages and update cache"
      yum: name="{{ item }}" state=latest
      with_items:
        - glibc
      when: ansible_distribution == 'CentOS' or ansible_distribution == 'Red Hat Enterprise Linux'

    - name: "Reboot the server"
      command: /sbin/reboot