8.2. Granting sudo access to an IdM user on an IdM client using the CLI

Procedure

1. Retrieve a Kerberos ticket as the IdM admin.

   [root@idmclient ~]# kinit admin

2. Add the /usr/sbin/reboot command to the IdM database of sudo commands:

   [root@idmclient ~]# ipa sudocmd-add /usr/sbin/reboot
   -------------------------------------
   Added Sudo Command "/usr/sbin/reboot"
   -------------------------------------
     Sudo Command: /usr/sbin/reboot

3. Create a sudo rule named idm_user_reboot:

   [root@idmclient ~]# ipa sudorule-add idm_user_reboot
   ---------------------------------
   Added Sudo Rule "idm_user_reboot"
   ---------------------------------
     Rule name: idm_user_reboot
     Enabled: TRUE

4. Add the /usr/sbin/reboot command to the idm_user_reboot rule:

   [root@idmclient ~]# ipa sudorule-add-allow-command idm_user_reboot --sudocmds '/usr/sbin/reboot'
     Rule name: idm_user_reboot
     Enabled: TRUE
     Sudo Allow Commands: /usr/sbin/reboot
   -------------------------
   Number of members added 1
   -------------------------

5. Apply the idm_user_reboot rule to the IdM idmclient host:

   [root@idmclient ~]# ipa sudorule-add-host idm_user_reboot --hosts idmclient.idm.example.com
   Rule name: idm_user_reboot
   Enabled: TRUE
   Hosts: idmclient.idm.example.com
   Sudo Allow Commands: /usr/sbin/reboot
   -------------------------
   Number of members added 1
   -------------------------

6. Add the idm_user account to the idm_user_reboot rule:

   [root@idmclient ~]# ipa sudorule-add-user idm_user_reboot --users idm_user
   Rule name: idm_user_reboot
   Enabled: TRUE
   Users: idm_user
   Hosts: idmclient.idm.example.com
   Sudo Allow Commands: /usr/sbin/reboot
   -------------------------
   Number of members added 1
   -------------------------

7. Optional: Define the validity of the idm_user_reboot rule:

   1. To define the time at which a sudo rule starts to be valid, use the ipa sudorule-mod sudo_rule_name command with the --setattr sudonotbefore=DATE option. The DATE value must follow the yyyymmddHHMMSSZ format, with seconds specified explicitly. For example, to set the start of the validity of the idm_user_reboot rule to 31 December 2025 12:34:00, enter:

      [root@idmclient ~]# ipa sudorule-mod idm_user_reboot --setattr sudonotbefore=20251231123400Z

   2. To define the time at which a sudo rule stops being valid, use the --setattr sudonotafter=DATE option. For example, to set the end of the idm_user_reboot rule validity to 31 December 2026 12:34:00, enter:

      [root@idmclient ~]# ipa sudorule-mod idm_user_reboot --setattr sudonotafter=20261231123400Z

   참고

   Propagating the changes from the server to the client can take a few minutes.

Verification

1. Log in to the idmclient host as the idm_user account.

2. Display which sudo rules the idm_user account is allowed to perform.

   [idm_user@idmclient ~]$ sudo -l
   Matching Defaults entries for idm_user on idmclient:
       !visiblepw, always_set_home, match_group_by_gid, always_query_group_plugin,
       env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS",
       env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE",
       env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES",
       env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE",
       env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY KRB5CCNAME",
       secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin
   
   User idm_user may run the following commands on idmclient:
       (root) /usr/sbin/reboot

3. Reboot the machine using sudo. Enter the password for idm_user when prompted:

   [idm_user@idmclient ~]$ sudo /usr/sbin/reboot
   [sudo] password for idm_user: