Install OpenLDAP LTB for Debian / Ubuntu
Installation
Import GPG key
Important
The GPG key for debian has been updated on August 2025. Take care to use the new one by following the instructions below.
The public key can be downloaded here: GPG key.
To import this key:
# apt install curl gpg
# curl https://ltb-project.org/documentation/_static/ltb-project-debian-keyring.gpg | gpg --dearmor > /usr/share/keyrings/ltb-project-debian-keyring.gpg
Tip
On old systems, you can also use apt-key command:
# curl https://ltb-project.org/documentation/_static/ltb-project-debian-keyring.gpg | apt-key add -
Declare APT repository
Tip
You need to set up the repository for your version:
buster (debian 10)
bullseye (debian 11)
bookworm (debian 12)
trixie (debian 13)
jammy (ubuntu 22.04 LTS)
Note: For other Ubuntu systems you can check which Debian release to choose in /etc/debian_version
Warning: other Ubuntu systems may not be supported, due to possible incompatible dependency versions
Authorize downloading of packages in https repositories:
# apt install apt-transport-https
Configure the repository:
# vi /etc/apt/sources.list.d/ltb-project-openldap.list
For OpenLDAP 2.5:
Tip
Available distributions are buster, bullseye, trixie, trixie and jammy. Here is the configuration for trixie.
deb [arch=amd64 signed-by=/usr/share/keyrings/ltb-project-debian-keyring.gpg] https://ltb-project.org/debian/openldap25/trixie trixie main
For OpenLDAP 2.6:
Tip
Available distributions are buster, bullseye, trixie, trixie and jammy. Here is the configuration for trixie.
deb [arch=amd64 signed-by=/usr/share/keyrings/ltb-project-debian-keyring.gpg] https://ltb-project.org/debian/openldap26/trixie trixie main
Then update:
# apt update
Install packages
You are now ready to install:
# apt install openldap-ltb openldap-ltb-contrib-overlays openldap-ltb-mdb-utils
See OpenLDAP packages to know available packages.
Rebuild debian packages
You can rebuild the debian packages:
get the packaging sources
follow the README procedure
Everything is available here