Configuring SSSD

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Configuring SSSD

The System Security Services Daemon (SSSD) is an important tool for system authentication and authorization. In this hands-on lab, we will configure SSSD in order to develop a basic proficiency with SSSD configuration and operation. We will also explore the local SSSD user configuration store.

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Lab Info

Level

Advanced

Last updated

Sep 23, 2025

Duration

1h 0m

Challenge

Install SSSD and the necessary tools.

Run yum install -y sssd sssd-tools.
Challenge

Configure SSSD to use the local database and to start UIDs and 2000.
- Run sudo cp /usr/share/doc/sssd-common-<current version>/sssd-example.conf /etc/sssd/sssd.conf && sudo chmod 0600 /etc/sssd/sssd.conf
- Add the following configurations to /etc/sssd/sssd.conf: domains = LOCAL [domain/LOCAL] id_provider = local auth_provider = local min_id = 2000
Challenge

Create the `jsmith` user, the `sis` group, and configure `jsmith` to have `sis` as a supplemental group in the local SSSD database.
Run the following commands:
```
sss_useradd jsmith 
sss_groupadd sis 
sss_usermod -a sis jsmith 
```
Challenge

Verify the user was created but is not located in `/etc/passwd`.
- Run grep jsmith /etc/passwd and verify no lines return.
- Run id jsmith to verify the user exists.

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