Files
docs/doc/source/security/kubernetes/linux-accounts-password-3dcad436dce4.rst
Matthew Montopoli 48fb52f0e7 DOC: Update password rules for v_master
Story: 2011283
Task: 52144
4/30: Applied edits to "linux-accounts-password" and "starlingx-system-accounts-system-account-password-rules" files.
5/2: Fixed bullet format issue in "linux-acconts-password"
5/5: Fixed additional bullet format in same file.

Change-Id: I1be4d5787f88d14629b331a2e47d5ab5025a4ad2
Signed-off by: Matthew Montopoli <matthew.montopoli@windriver.com>
2025-05-09 13:37:45 +00:00

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.. _linux-accounts-password-3dcad436dce4:
=============================
Linux Accounts Password Rules
=============================
.. rubric:: Check Current Password Expiry Settings
Before making any changes, you may want to check the current password expiry
settings for the user. You can do this by running the :command:`chage -l
<username>` command, replacing ``<username>`` with the name of the user whose
password expiry settings you want to view.
.. code-block:: none
sudo chage -l <username>
.. rubric:: Change Password Expiry Settings
To change the password expiry period of Linux accounts, run the
:command:`chage` command, as below:
.. code-block:: none
[sysadmin@controller-0 ~(keystone_admin)]$ sudo chage -M <days_to_expiry> -I <days_to_inactive> <username>
- -M <days_to_expiry>: Sets the maximum number of days a password is valid
(90 days by default).
- -I <days_to_inactive>: Sets the number of days of inactivity after a password
expires before the account is disabled (45 days by default).
For example, to set a maximum password age of 60 days and configure the account
to be permanently disabled 45 days after the password expires for the user
``sysadmin``, run the following command:
.. code-block:: none
[sysadmin@controller-0 ~(keystone_admin)]$ sudo chage -M 60 -I 45 sysadmin
Verify Changes
--------------
After making the changes, verify that the new password expiry settings have
been applied by running the :command:`chage -l <username>` command again.
.. code-block:: none
chage -l <username>
For the example above of user ``sysadmin`` and expiry period of 60 days, the
output of ``chage -l <username>`` should be as follows:
.. code-block:: none
[sysadmin@controller-0 ~(keystone_admin)]$ chage -l sysadmin
Last password change : Apr 09, 2025
Password expires : Jun 08, 2025
Password inactive : Jul 23, 2025
Account expires : never
Minimum number of days between password change : 1
Maximum number of days between password change : 60
Number of days of warning before password expires : 7