Chapter 1. Introduction to the IdM command-line utilities
Learn more about the basics of using the Identity Management (IdM) command-line utilities.
Prerequisites
Installed and accessible IdM server.
For details, see Installing Identity Management.
To use the IPA command-line interface, authenticate to IdM with a valid Kerberos ticket.
For details about obtaining a valid Kerberos ticket, see Logging in to Identity Management from the command line.
1.1. What is the IPA command-line interface
The IPA command-line interface (CLI) is the basic command-line interface for Identity Management (IdM) administration.
It supports a lot of subcommands for managing IdM, such as the ipa user-add
command to add a new user.
IPA CLI allows you to:
- Add, manage, or remove users, groups, hosts and other objects in the network.
- Manage certificates.
- Search entries.
- Display and list objects.
- Set access rights.
- Get help with the correct command syntax.
1.2. What is the IPA help
The IPA help is a built-in documentation system for the IdM server.
The IPA command-line interface (CLI) generates available help topics from loaded IdM plugin modules. To use the IPA help utility, you must:
- Have an IdM server installed and running.
- Be authenticated with a valid Kerberos ticket.
Entering the ipa help
command without options displays information about basic help usage and the most common command examples.
You can use the following options for different ipa help
use cases:
$ ipa help [TOPIC | COMMAND | topics | commands]
-
[]
— Brackets mean that all parameters are optional and you can write justipa help
and the command will be executed. |
— The pipe character means or. Therefore, you can specify aTOPIC
, aCOMMAND
, ortopics
, orcommands
, with the basicipa help
command:-
topics
— You can run the commandipa help topics
to display a list of topics that are covered by the IPA help, such asuser
,cert
,server
and many others. -
TOPIC
— The TOPIC with capital letters is a variable. Therefore, you can specify a particular topic, for example,ipa help user
. -
commands
— You can enter the commandipa help commands
to display a list of commands which are covered by the IPA help, for example,user-add
,ca-enable
,server-show
and many others. -
COMMAND
— The COMMAND with capital letters is a variable. Therefore, you can specify a particular command, for example,ipa help user-add
.
-
1.3. Using IPA help topics
The following procedure describes how to use the IPA help on the command line.
Procedure
- Open a terminal and connect to the IdM server.
Enter
ipa help topics
to display a list of topics covered by help.$ ipa help topics
Select one of the topics and create a command according to the following pattern:
ipa help [topic_name]
. Instead of thetopic_name
string, add one of the topics you listed in the previous step.In the example, we use the following topic:
user
$ ipa help user
(Optional) If the IPA help output is too long and you cannot see the whole text, use the following syntax:
$ ipa help user | less
You can then scroll down and read the whole help.
The IPA CLI displays a help page for the user
topic. After reading the overview, you can see many examples with patterns for working with topic commands.
1.4. Using IPA help commands
The following procedure describes how to create IPA help commands on the command line.
Procedure
- Open a terminal and connect to the IdM server.
Enter
ipa help commands
to display a list of commands covered by help.$ ipa help commands
Select one of the commands and create a help command according to the following pattern:
ipa help <COMMAND>
. Instead of the<COMMAND>
string, add one of the commands you listed in the previous step.$ ipa help user-add
Additional resources
-
ipa
man page on your system
1.5. Structure of IPA commands
The IPA CLI distinguishes the following types of commands:
- Built-in commands — Built-in commands are all available in the IdM server.
- Plug-in provided commands
The structure of IPA commands allows you to manage various types of objects. For example:
- Users
- Hosts
- DNS records
- Certificates
and many others.
For most of these objects, the IPA CLI includes commands to:
-
Add (
add
) -
Modify (
mod
) -
Delete (
del
) -
Search (
find
) -
Display (
show
)
Commands have the following structure:
ipa user-add
, ipa user-mod
, ipa user-del
, ipa user-find
, ipa user-show
ipa host-add
, ipa host-mod
, ipa host-del
, ipa host-find
, ipa host-show
ipa dnsrecord-add
, ipa dnsrecord-mod
, ipa dnsrecord-del
, ipa dnsrecord-find
, ipa dnrecord-show
You can create a user with the ipa user-add [options]
, where [options]
are optional. If you use just the ipa user-add
command, the script asks you for details one by one.
Note that the [options]
--raw
and --structured
are mutually exclusive and should not be run together.
To change an existing object, you need to define the object, therefore the command also includes an object: ipa user-mod USER_NAME [options]
.
1.6. How to supply a list of values to the IdM utilities
Identity Management (IdM) stores values for multi-valued attributes in lists.
IdM supports the following methods of supplying multi-valued lists:
Using the same command-line argument multiple times within the same command invocation:
$ ipa permission-add --right=read --permissions=write --permissions=delete ...
Alternatively, you can enclose the list in curly braces, in which case the shell performs the expansion:
$ ipa permission-add --right={read,write,delete} ...
The examples above show a command permission-add
which adds permissions to an object. The object is not mentioned in the example. Instead of …
you need to add the object for which you want to add permissions.
When you update such multi-valued attributes from the command line, IdM completely overwrites the previous list of values with a new list. Therefore, when updating a multi-valued attribute, you must specify the whole new list, not just a single value you want to add.
For example, in the command above, the list of permissions includes reading, writing and deleting. When you decide to update the list with the permission-mod
command, you must add all values, otherwise those not mentioned will be deleted.
Example 1: — The ipa permission-mod
command updates all previously added permissions.
$ ipa permission-mod --right=read --right=write --right=delete ...
or
$ ipa permission-mod --right={read,write,delete} ...
Example 2 — The ipa permission-mod
command deletes the --right=delete
argument because it is not included in the command:
$ ipa permission-mod --right=read --right=write ...
or
$ ipa permission-mod --right={read,write} ...
1.7. How to use special characters with the IdM utilities
When passing command-line arguments that include special characters to the ipa
commands, escape these characters with a backslash (\). For example, common special characters include angle brackets (< and >), ampersand (&), asterisk (*), or vertical bar (|).
For example, to escape an asterisk (*):
$ ipa certprofile-show certificate_profile --out=exported\*profile.cfg
Commands containing unescaped special characters do not work as expected because the shell cannot properly parse such characters.