8.5. Creating a sudo rule on the CLI that runs a command as a service account on an IdM client

Procedure

1. Retrieve a Kerberos ticket as the IdM admin.

   [root@idmclient ~]# kinit admin

2. Add the /opt/third-party-app/bin/report command to the IdM database of sudo commands:

   [root@idmclient ~]# ipa sudocmd-add /opt/third-party-app/bin/report
   ----------------------------------------------------
   Added Sudo Command "/opt/third-party-app/bin/report"
   ----------------------------------------------------
     Sudo Command: /opt/third-party-app/bin/report

3. Create a sudo rule named run_third-party-app_report:

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

4. Use the --users=<user> option to specify the RunAs user for the sudorule-add-runasuser command:

   [root@idmclient ~]# ipa sudorule-add-runasuser run_third-party-app_report --users=thirdpartyapp
     Rule name: run_third-party-app_report
     Enabled: TRUE
     RunAs External User: thirdpartyapp
   -------------------------
   Number of members added 1
   -------------------------

   The user (or group specified with the --groups=* option) can be external to IdM, such as a local service account or an Active Directory user. Do not add a % prefix for group names.

5. Add the /opt/third-party-app/bin/report command to the run_third-party-app_report rule:

   [root@idmclient ~]# ipa sudorule-add-allow-command run_third-party-app_report --sudocmds '/opt/third-party-app/bin/report'
   Rule name: run_third-party-app_report
   Enabled: TRUE
   Sudo Allow Commands: /opt/third-party-app/bin/report
   RunAs External User: thirdpartyapp
   -------------------------
   Number of members added 1
   -------------------------

6. Apply the run_third-party-app_report rule to the IdM idmclient host:

   [root@idmclient ~]# ipa sudorule-add-host run_third-party-app_report --hosts idmclient.idm.example.com
   Rule name: run_third-party-app_report
   Enabled: TRUE
   Hosts: idmclient.idm.example.com
   Sudo Allow Commands: /opt/third-party-app/bin/report
   RunAs External User: thirdpartyapp
   -------------------------
   Number of members added 1
   -------------------------

7. Add the idm_user account to the run_third-party-app_report rule:

   [root@idmclient ~]# ipa sudorule-add-user run_third-party-app_report --users idm_user
   Rule name: run_third-party-app_report
   Enabled: TRUE
   Users: idm_user
   Hosts: idmclient.idm.example.com
   Sudo Allow Commands: /opt/third-party-app/bin/report
   RunAs External User: thirdpartyapp
   -------------------------
   Number of members added 1

   注意

   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. Test the new sudo rule:

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

      [idm_user@idmclient ~]$ sudo -l
      Matching Defaults entries for idm_user@idm.example.com 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@idm.example.com may run the following commands on idmclient:
          (thirdpartyapp) /opt/third-party-app/bin/report

   2. Run the report command as the thirdpartyapp service account.

      [idm_user@idmclient ~]$ sudo -u thirdpartyapp /opt/third-party-app/bin/report
      [sudo] password for idm_user@idm.example.com:
      Executing report...
      Report successful.