Documentation

crypttab – Encrypted Linux block devices

Synopsis

  • Control Linux encrypted block devices that are set up during system boot in /etc/crypttab.

Parameters

Parameter Choices/Defaults Comments
backing_device
string
Path to the underlying block device or file, or the UUID of a block-device prefixed with UUID=.
name
string / required
Name of the encrypted block device as it appears in the /etc/crypttab file, or optionally prefixed with /dev/mapper/, as it appears in the filesystem. /dev/mapper/ will be stripped from name.
opts
string
A comma-delimited list of options. See crypttab(5 ) for details.
password
path
Encryption password, the path to a file containing the password, or - or unset if the password should be entered at boot.
path
path
Default:
/etc/crypttab
Path to file to use instead of /etc/crypttab.
This might be useful in a chroot environment.
state
string / required
    Choices:
  • absent
  • opts_absent
  • opts_present
  • present
Use present to add a line to /etc/crypttab or update its definition if already present.
Use absent to remove a line with matching name.
Use opts_present to add options to those already present; options with different values will be updated.
Use opts_absent to remove options from the existing set.

Examples

- name: Set the options explicitly a device which must already exist
  crypttab:
    name: luks-home
    state: present
    opts: discard,cipher=aes-cbc-essiv:sha256

- name: Add the 'discard' option to any existing options for all devices
  crypttab:
    name: '{{ item.device }}'
    state: opts_present
    opts: discard
  loop: '{{ ansible_mounts }}'
  when: "'/dev/mapper/luks-' in {{ item.device }}"

Status

Authors

  • Steve (@groks)

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