Quick start tutorial


This tutorial will guide you into a minimal installation and configuration procedure. You need some prerequisites:

  • Root access to a Debian, Ubuntu, CentOS or RHEL test system
  • A web browser
  • A cup of coffee (or tea, we are open minded)


Debian / Ubuntu

apt install apt-transport-https
wget -O - https://lemonldap-ng.org/_media/rpm-gpg-key-ow2 | apt-key add -
echo "deb https://lemonldap-ng.org/deb stable main" > /etc/apt/sources.list.d/lemonldap-ng.list
apt update
apt install lemonldap-ng


curl https://lemonldap-ng.org/_media/rpm-gpg-key-ow2 > /etc/pki/rpm-gpg/RPM-GPG-KEY-OW2
echo '[lemonldap-ng]
name=LemonLDAP::NG packages
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-OW2' > /etc/yum.repos.d/lemonldap-ng.repo
yum update
yum install epel-release
yum install lemonldap-ng
# If you use SELinux
yum install lemonldap-ng-selinux

SSO domain configuration

LemonLDAP::NG needs all its components to be served on the same DNS domain.

If you can edit your /etc/hosts file or have access to a DNS server, check Using your own domain, if you have no way to modify your DNS configuration, check Using nip.io (or other DNS wildcard services).

Using your own domain

The defaut SSO domain is example.com. You can keep it for your tests or change it, for example for mydomain.com:

sed -i 's/example\.com/mydomain.com/g' \
   /etc/lemonldap-ng/* /var/lib/lemonldap-ng/conf/lmConf-1.json \
   /etc/nginx/conf.d/* \
   /etc/httpd/conf.d/* \

In order to be able to test, update your DNS or your local hosts file to map these names to the SSO server IP:

  • auth.mydomain.com
  • manager.mydomain.com
  • test1.mydomain.com
  • test2.mydomain.com

For example, you can enter the following command on your local computer: (adjust according to your server IP and test domain)

echo " auth.mydomain.com manager.mydomain.com test1.mydomain.com test2.mydomain.com" >> /etc/hosts

Using nip.io (or other DNS wildcard services)

If you cannot edit /etc/hosts or your DNS zone, don’t give up yet, you can use services such as nip.io, xip.io, sslip.io or others.

For example, if your server IP is, you can use 192-168-12-13.nip.io as your SSO domain:

sed -i 's/example\.com/192-168-12-13.nip.io/g' \
   /etc/lemonldap-ng/* /var/lib/lemonldap-ng/conf/lmConf-1.json \
   /etc/nginx/conf.d/* \
   /etc/httpd/conf.d/* \


nip.io, xip.io or any DNS wildcard services mentionned in this section are not affiliated with the LemonLDAP::NG project in any way. These services will receive DNS requests that will allow them to know your test server’s IP address. If this is an issue for you, do not use these services.


Starting services

Debian / Ubuntu

Enable the Nginx virtualhosts and restart the web server and LemonLDAP::NG server to apply the configuration changes

cd /etc/nginx/sites-enabled
ln -s ../sites-available/*nginx* .
systemctl restart lemonldap-ng-fastcgi-server
systemctl restart nginx


Enable and start httpd

systemctl enable httpd
systemctl start httpd

Open SSO session

Go on http://auth.mydomain.com and log with one of the demonstration account.

Login Password Role
rtyler rtyler user
msmith msmith user
dwho dwho administrator

Access protected application

Try http://test1.mydomain.com or http://test2.mydomain.com

Edit configuration

Log with the dwho account and go on http://manager.mydomain.com