Ansible Pilot

User password expiration - Ansible module user

User password expiration - Ansible module user

How to ser the user password expiration applying the Linux aging policy system.

How to set user password expiration time on Linux with Ansible? I’m going to show you a live demo with some simple Ansible code. I’m Luca Berton and welcome to today’s episode of Ansible Pilot.

Ansible user password expiration

Today we’re talking about the Ansible module user. The full name is ansible.builtin.user, which means that is part of the collection of modules “builtin” with ansible and shipped with it. It’s a module pretty stable and out for years, it manages user accounts and supports a huge variety of Linux distributions. For Windows, use the ansible.windows.win_user module instead.

Linux password aging policy

Linux password aging policy

This schema represents the Linux password aging policy. Let me highlight that the Ansible native module user is able to set only the min days -m and max days -M parameter. Max days set password policy for requesting password should be renewed, for example in every 90 days. Min days set the minimum days should be waiting for changing the password again, for example after 7 days from the last change. To disable password aging specify the value of 99999. For the other parameters, you need to rely on the chage command-line utility or via the Ansible shell module.

Parameters

This module has many parameters to perform any task. The only required is “name”, which is the username. In the password_expire_min parameter you specify the value of the min days validity. In the password_expire_max parameter you specify the value of the max days' validity. Please note that these parameters are Linux only.

demo

Set user password expiration time with Ansible Playbook.

---
- name: user module demo
  hosts: all
  become: true
  vars:
    myuser: "example"
  tasks:
    - name: password expiration
      ansible.builtin.user:
        name: "{{ myuser }}"
        password_expire_min: 7
        password_expire_max: 90

execution

$ ansible-playbook -i demo/inventory user\ expiration/user.yml

PLAY [user module demo] **********************************************************************************

TASK [Gathering Facts] ***********************************************************************************
ok: [demo.example.com]

TASK [password expiration] *******************************************************************************
changed: [demo.example.com]

PLAY RECAP ***********************************************************************************************
demo.example.com           : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

before execution


$ ssh [email protected]
Last login: Mon Nov  8 17:07:10 2021 from 192.168.43.5
[[email protected] ~]$ sudo su
[[email protected] devops]# chage --help
Usage: chage [options] LOGIN

Options:
-d, --lastday LAST_DAY        set date of last password change to LAST_DAY
-E, --expiredate EXPIRE_DATE  set account expiration date to EXPIRE_DATE
-h, --help                    display this help message and exit
-I, --inactive INACTIVE       set password inactive after expiration
to INACTIVE
-l, --list                    show account aging information
-m, --mindays MIN_DAYS        set minimum number of days before password
change to MIN_DAYS
-M, --maxdays MAX_DAYS        set maximum number of days before password
change to MAX_DAYS
-R, --root CHROOT_DIR         directory to chroot into
-W, --warndays WARN_DAYS      set expiration warning days to WARN_DAYS

[[email protected] devops]# chage -l example
Last password change     : Nov 08, 2021
Password expires     : never
Password inactive     : never
Account expires      : never
Minimum number of days between password change  : 0
Maximum number of days between password change  : 99999
Number of days of warning before password expires : 7

after execution

$ ssh [email protected]
Last login: Mon Nov  8 17:09:16 2021 from 192.168.43.5
[[email protected] ~]$ sudo su
[[email protected] devops]# chage -l example
Last password change     : Nov 08, 2021
Password expires     : Feb 06, 2022
Password inactive     : never
Account expires      : never
Minimum number of days between password change  : 0
Maximum number of days between password change  : 90
Number of days of warning before password expires : 7
[[email protected] devops]# passwd example
Changing password for user example.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
[[email protected] devops]# passwd example
Changing password for user example.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
[[email protected] devops]# su - example
[[email protected] ~]$ passwd
Changing password for user example.
Current password:
New password:
BAD PASSWORD: The password is shorter than 8 characters
passwd: Authentication token manipulation error

code with ❤️ in GitHub

Recap

Now you know how to set user password expiration time on Linux with Ansible. Subscribe to the YouTube channel, Medium, Website and Twitter to not miss the next episode of the Ansible Pilot.

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November 9, 2021