safe-remove.yml

#!/usr/bin/ansible-playbook
---
#
# Safely removes the chroot directory created by init-arcade.yml.
#
# In particular, it removes any bind mounts before recursively
# deleting the chroot directory.
#
# To run:
# sudo safe-remove.yml -e cli_chroot_path=/path/to/chroot
#

- hosts: localhost
  connection: local
  vars:
    bind_mounts:
    - proc
    - sys
    - dev/pts
    - dev

  tasks:

  - name: Check if user is root
    fail:
      msg: "This playbook must be run as root"
    when: ansible_user_uid != 0

  - name: Check for required variables
    fail:
      msg: "Variable {{ item }} is not defined"
    when: item is undefined
    with_items:
    - cli_chroot_path

  - name: Confirm deletion
    pause:
      prompt: |

        Proceed with deletion of {{ cli_chroot_path }}?

        To continue, press Enter.  To stop, press Ctrl-C and then 'A' to abort.

  - name: Find existing bind mounts in chroot directory
    command: "findmnt --mountpoint {{ cli_chroot_path }}/{{ item }}"
    register: bind_mount_status
    ignore_errors: yes
    with_items: "{{ bind_mounts }}"

  - name: Remove bind mounts in chroot directory
    command: "umount {{ cli_chroot_path }}/{{ item.item }}"
    when: item.rc == 0
    with_items: "{{ bind_mount_status.results }}"

  - name: Remove chroot directory
    file:
      path: "{{ cli_chroot_path }}"
      state: absent