community.general.pamd – Manage PAM Modules

Note

This plugin is part of the community.general collection (version 4.2.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.general.

To use it in a playbook, specify: community.general.pamd.

Synopsis

  • Edit PAM service’s type, control, module path and module arguments.

  • In order for a PAM rule to be modified, the type, control and module_path must match an existing rule. See man(5) pam.d for details.

Parameters

Parameter Choices/Defaults Comments
backup
boolean
    Choices:
  • no ←
  • yes
Create a backup file including the timestamp information so you can get the original file back if you somehow clobbered it incorrectly.
control
string / required
The control of the PAM rule being modified.
This may be a complicated control with brackets. If this is the case, be sure to put "[bracketed controls]" in quotes.
The type, control and module_path all must match a rule to be modified.
module_arguments
list / elements=string
When state is updated, the module_arguments will replace existing module_arguments.
When state is args_absent args matching those listed in module_arguments will be removed.
When state is args_present any args listed in module_arguments are added if missing from the existing rule.
Furthermore, if the module argument takes a value denoted by =, the value will be changed to that specified in module_arguments.
module_path
string / required
The module path of the PAM rule being modified.
The type, control and module_path all must match a rule to be modified.
name
string / required
The name generally refers to the PAM service file to change, for example system-auth.
new_control
string
The new control to assign to the new rule.
new_module_path
string
The new module path to be assigned to the new rule.
new_type
string
    Choices:
  • account
  • -account
  • auth
  • -auth
  • password
  • -password
  • session
  • -session
The new type to assign to the new rule.
path
path
Default:
"/etc/pam.d"
This is the path to the PAM service files.
state
string
    Choices:
  • absent
  • before
  • after
  • args_absent
  • args_present
  • updated ←
The default of updated will modify an existing rule if type, control and module_path all match an existing rule.
With before, the new rule will be inserted before a rule matching type, control and module_path.
Similarly, with after, the new rule will be inserted after an existing rulematching type, control and module_path.
With either before or after new_type, new_control, and new_module_path must all be specified.
If state is args_absent or args_present, new_type, new_control, and new_module_path will be ignored.
State absent will remove the rule. The 'absent' state was added in Ansible 2.4.
type
string / required
    Choices:
  • account
  • -account
  • auth
  • -auth
  • password
  • -password
  • session
  • -session
The type of the PAM rule being modified.
The type, control and module_path all must match a rule to be modified.

Notes

Note

  • This module does not handle authselect profiles.

Examples

- name: Update pamd rule's control in /etc/pam.d/system-auth
  community.general.pamd:
    name: system-auth
    type: auth
    control: required
    module_path: pam_faillock.so
    new_control: sufficient

- name: Update pamd rule's complex control in /etc/pam.d/system-auth
  community.general.pamd:
    name: system-auth
    type: session
    control: '[success=1 default=ignore]'
    module_path: pam_succeed_if.so
    new_control: '[success=2 default=ignore]'

- name: Insert a new rule before an existing rule
  community.general.pamd:
    name: system-auth
    type: auth
    control: required
    module_path: pam_faillock.so
    new_type: auth
    new_control: sufficient
    new_module_path: pam_faillock.so
    state: before

- name: Insert a new rule pam_wheel.so with argument 'use_uid' after an \
        existing rule pam_rootok.so
  community.general.pamd:
    name: su
    type: auth
    control: sufficient
    module_path: pam_rootok.so
    new_type: auth
    new_control: required
    new_module_path: pam_wheel.so
    module_arguments: 'use_uid'
    state: after

- name: Remove module arguments from an existing rule
  community.general.pamd:
    name: system-auth
    type: auth
    control: required
    module_path: pam_faillock.so
    module_arguments: ''
    state: updated

- name: Replace all module arguments in an existing rule
  community.general.pamd:
    name: system-auth
    type: auth
    control: required
    module_path: pam_faillock.so
    module_arguments: 'preauth
        silent
        deny=3
        unlock_time=604800
        fail_interval=900'
    state: updated

- name: Remove specific arguments from a rule
  community.general.pamd:
    name: system-auth
    type: session
    control: '[success=1 default=ignore]'
    module_path: pam_succeed_if.so
    module_arguments: crond,quiet
    state: args_absent

- name: Ensure specific arguments are present in a rule
  community.general.pamd:
    name: system-auth
    type: session
    control: '[success=1 default=ignore]'
    module_path: pam_succeed_if.so
    module_arguments: crond,quiet
    state: args_present

- name: Ensure specific arguments are present in a rule (alternative)
  community.general.pamd:
    name: system-auth
    type: session
    control: '[success=1 default=ignore]'
    module_path: pam_succeed_if.so
    module_arguments:
    - crond
    - quiet
    state: args_present

- name: Module arguments requiring commas must be listed as a Yaml list
  community.general.pamd:
    name: special-module
    type: account
    control: required
    module_path: pam_access.so
    module_arguments:
    - listsep=,
    state: args_present

- name: Update specific argument value in a rule
  community.general.pamd:
    name: system-auth
    type: auth
    control: required
    module_path: pam_faillock.so
    module_arguments: 'fail_interval=300'
    state: args_present

- name: Add pam common-auth rule for duo
  community.general.pamd:
    name: common-auth
    new_type: auth
    new_control: '[success=1 default=ignore]'
    new_module_path: '/lib64/security/pam_duo.so'
    state: after
    type: auth
    module_path: pam_sss.so
    control: 'requisite'

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
action
string
always
That action that was taken and is one of: update_rule, insert_before_rule, insert_after_rule, args_present, args_absent, absent. This was available in Ansible 2.4 and removed in Ansible 2.8

Sample:
update_rule
backupdest
string
success
The file name of the backup file, if created.

change_count
integer
success
How many rules were changed.

Sample:
1
dest
string
success
Path to pam.d service that was changed. This is only available in Ansible 2.3 and was removed in Ansible 2.4.

Sample:
/etc/pam.d/system-auth
new_rule
string
success
The changes to the rule. This was available in Ansible 2.4 and Ansible 2.5. It was removed in Ansible 2.6.

Sample:
None None None sha512 shadow try_first_pass use_authtok
updated_rule_(n)
string
success
The rule(s) that was/were changed. This is only available in Ansible 2.4 and was removed in Ansible 2.5.

Sample:
['password sufficient pam_unix.so sha512 shadow try_first_pass use_authtok']


Authors

  • Kenneth D. Evensen (@kevensen)