idmap_sss(8)

idmap_sss8

Sssd's idmap_sss backend for winbind

Overview

The idmap_sss module provides a way to call SSSD to map UIDs/GIDs and SIDs. No database is required in this case as the mapping is done by SSSD.

Options

range = low - high

Defines the available matching UID and GID range for which the backend is authoritative.

Examples

This example shows how to configure idmap_sss as the default mapping module.

[global]
security = ads
workgroup = <AD-DOMAIN-SHORTNAME>
idmap config <AD-DOMAIN-SHORTNAME> : backend        = sss
idmap config <AD-DOMAIN-SHORTNAME> : range          = 200000-2147483647
idmap config * : backend        = tdb
idmap config * : range          = 100000-199999

Please replace <AD-DOMAIN-SHORTNAME> with the NetBIOS domain name of the AD domain. If multiple AD domains should be used each domain needs an idmap config line with backend = sss and a line with a suitable range.

Since Winbind requires a writeable default backend and idmap_sss is read-only the example includes backend = tdb as default.

Releases

6 releases since Debian 9 (Stretch); the text changed 5 times.

  1. 9
  2. 10
  3. 11
  4. 12
  5. 13
  6. Arch

Authors

The SSSD upstream - https://github.com/SSSD/sssd/

From sssd 2.13.1-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.