docs/doc/source/security/kubernetes/create-ldap-linux-accounts.rst

Create LDAP Linux Accounts

includes a script for creating Linux accounts.

Note

For security reasons, it is recommended that ONLY admin level users be allowed to to the nodes of the . Non-admin level users should strictly use remote CLIs or remote web GUIs.

The ldapusersetup command provides an interactive method for setting up Linux user accounts.

Centralized management is implemented using two servers, one running on each controller node. server synchronization is automatic using the native content synchronization protocol.

A set of commands is available to operate on user accounts. The commands are installed in the directory /usr/local/sbin, and are available to any user account in the sudoers list. Included commands are lsldap, ldapadduser, ldapdeleteuser, and several others starting with the prefix ldap.

Use the command option --help on any command to display a brief help message, as illustrated below.

$ ldapadduser --help
Usage : /usr/local/sbin/ldapadduser <username> <groupname | gid> [uid]
$ ldapdeleteuser --help
Usage : /usr/local/sbin/ldapdeleteuser <username | uid>

For convenience, identify the user's Keystone account user name in .

1. Log in as sysadmin, and start the ldapusersetup script.

   controller-0: ~$ sudo ldapusersetup

2. Follow the interactive steps in the script.

   1. Provide a user name.

      Enter username to add to LDAP: teamadmin

      Successfully added user teamadmin to LDAP
      Successfully set password for user teamadmin
      Warning : password is reset, user will be asked to change password at login

   2. Specify whether the user should have sudo capabilities or not. Enabling sudo privileges allows the LDAP users to execute the following operations:

      • sw_patch to unauthenticated endpoint
      • docker and/or crictl commands to communicate with the respective daemons
      • Utilities show-certs.sh and license-install (recovery only)
      • IP configuration for local network setup
      • Password change of local openldap users
      • Access to restricted files, example: restricted logs
      • Manual reboots

      Add teamadmin to sudoer list? (yes/NO): yes
      Successfully added sudo access for user teamadmin to LDAP

   3. Specify a secondary user group for this user. For example, sys_protected group.

      The purpose of having OpenLDAP/WAD users as a part of the sys_protected group on the platform is to allow them to execute the system operations via source/etc/platform/openrc. The LDAP user in the sys_protected group will be equivalent to the special sysadmin bootstrap user, and will have the following:

      • Keystone admin/admin identity and credentials
      • Kubernetes /etc/kubernetes/admin.conf credentials

      Add teamadmin to secondary user group? (yes/NO): yes
      Secondary group to add user to? [sys_protected]:
      Successfully added user teamadmin to group cn=sys_protected,ou=Group,dc=cgcs,dc=local

   4. Change the password duration.

      Enter days after which user password must be changed [90]:

      Successfully modified user entry uid=ldapuser1, ou=People, dc=cgcs, dc=local in LDAP
      Updating password expiry to 90 days

   5. Change the warning period before the password expires.

      Enter days before password is to expire that user is warned [2]:

      Successfully modified user entry uid=teamadmin,ou=People,dc=cgcs,dc=local in LDAP
      Updating password expiry to 2 days

On completion of the script, the command prompt is displayed.

controller-0: ~$

The Local account is created. For information about the user login process, see For StarlingX and Platform OpenStack CLIs from a Local LDAP Linux Account Login <establish-keystone-credentials-from-a-linux-account>.

For managing composite Local Accounts (i.e. with associated Keystone and Kubernetes accounts) for a standalone cloud or a distributed cloud, see Manage Composite Local LDAP Accounts at Scale <manage-local-ldap-39fe3a85a528>.