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Using the Light LDAP (LLDAP) implementation for authentication on Kubernetes

LLDAP homepage: https://github.com/nitnelave/lldap

About

For testing purposes you can run the LLDAP container on Kubernetes and use the container as a LDAP authentication backend.

Thanks to nitnelave for the changing LLDAP to get it authenticating with SUSE Rancher (see https://github.com/nitnelave/lldap/issues/432)

Set the variables needed and create Kubernetes secret of it

The LLDAP container will be using thes secrets, without creating these secrets, the pod will not be up and running

NAMESPACE=lldap # in which namespace the lldap container will be installed, always use lowercase
LLDAP_JWT_SECRET=<some random value>
LLDAP_LDAP_USER_PASS=admin # change if wanted
LLDAP_BASE_DN=dc=evantage,dc=nl # set your own is wanted

kubectl create secret generic lldap-credentials \
  --from-literal=lldap-jwt-secret=${LLDAP_JWT_SECRET} \
  --from-literal=lldap-ldap-user-pass=${LLDAP_LDAP_USER_PASS} \
  --from-literal=base-dn=${LLDAP_BASE_DN} \
  -n ${NAMESPACE}

Apply the yaml files

A PVC will be used to store the data persistant. It will use the local path provisioner, see https://github.com/rancher/local-path-provisioner. If it is not installed, please install this prior to applying the LLDAP yaml files.

Apply the LLDAP deployment in the same namespace as where the secrets were created:

kubectl apply -f lldap-persistentvolumeclaim.yaml -n ${NAMESPACE}
kubectl apply -f lldap-deployment.yaml -n ${NAMESPACE}
kubectl apply -f lldap-service.yaml -n ${NAMESPACE}

It will take maybe a minute or so, after pulling the image it will be up and running.

Your LLDAP container is then ready for accepting LDAP requests on port 3890.

Accessing the UI

To add user and groups to LLDAP, you can use the UI of LLDAP. You can use a kubectl port-forward on the service to get to this UI:

kubectl port-forward service/lldap-service 17170:17170 -n ${NAMESPACE}

And in your browser go to http://127.0.0.1:17170. Login with admin and the password set in variable above.

For creating user and groups, please look at the LLDAP documentation at https://github.com/nitnelave/lldap

Good luck!