LDAP Client on a Raspberry Pi running Raspbian 9

Recently I've deployed a few raspberry pi nodes running raspbian and I did not want to have local users (except the 'pi' one) but have it using ldap for authentication. So here is what I did to get it working with raspbian 9.
You'll have to start by installing the necessary package in this case, which is libnss-ldapd.

 [archy@rpi3 ~]$ sudo apt-get -y install libnss-ldapd

When the installation is complete, we'll need to edit the config. Edit the /etc/nslcd.conf in your favorite editor

 [archy@rpi3 ~]$ sudo vim /etc/nslcd.conf

  uid nslcd # The user which nslcd will run as
  gid nslcd # The group which nslcd will run as 

  uri ldap://ipa01.archyslife.lan # My ldap-servers which are queried    
  uri ldap://ipa02.archyslife.lan # for authentication requests,    

  base dc=archyslife,dc=lan # This base will be used for all queries.

Next up is the name service switch file where we'll need to add a few things. Open up the file in your favorite editor and change it like so:

 passwd:     compat ldap  
 group:     compat ldap

 shadow:   compat ldap  
 gshadow:    files  

 hosts:     files dns mdns4_minimal [NOTFOUND=return] dns  
 networks:    files  

 protocols:   db files  
 services:    db files  
 ethers:     db files  
 rpc:      db files  

 netgroup:    nis

Next, we'll have to configure the pluggable authentication modules (PAM) to also use LDAP-Authentication as auth-source. Run the following command to achieve that:

 [archy@rpi3 ~]$ sudo pam-auth-update

and then enabling the LDAP Authentication. Last thing to do, is restarting the nslcd and nscd service.and enabling them to start at boot.

 [archy@rpi3 ~]$ sudo systemctl restart nslcd.service  
 [archy@rpi3 ~]$ sudo systemctl restart nscd.service  
 [archy@rpi3 ~]$ sudo systemctl enable nslcd.service  
 [archy@rpi3 ~]$ sudo systemctl enable nscd.service

Your Pi is now configured to use ldap authentication. You can test it by running 'su - $ldapuser'.

Feel free to comment and / or suggest a topic.

Comments

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