nis rfc2307 is obsolete, this README will help you to replace it by the new rfc2307bis.ldif
sudo apt install slapd ldap-utilssudo wget https://github.com/palw3ey/rfc2307bis/releases/download/latest/rfc2307bis.ldif -O /etc/ldap/schema/rfc2307bis.ldifsudo vi /usr/share/slapd/slapd.init.ldiffind this line :
include: file:///etc/ldap/schema/nis.ldifappend a # at the beginning of the line, to make it as a comment.
And just below this commented line, add :
include: file:///etc/ldap/schema/rfc2307bis.ldifsudo dpkg-reconfigure slapdsudo ldapsearch -LLL -Y external -H ldapi:/// -b cn=schema,cn=config -s one dnIf everything is OK, then you should see this line in the output :
dn: cn={2}rfc2307bis,cn=schema,cn=configEnable memberof overlay : To automatically add (or remove) a "memberof" attribute to the user entry, when the user is added (or removed) to a groupofnames.
Check if memberof is already enabled :
sudo slapcat -n 0 | grep "olcModuleLoad.*memberof"Otherwise load memberof module :
sudo ldapmodify -Y EXTERNAL -H ldapi:/// <<!
dn: cn=module{0},cn=config
changetype: modify
add: olcModuleLoad
olcModuleLoad: memberof.la
!Check if memberof overlay is already enabled :
sudo slapcat -n 0 | grep "olcOverlay.*memberof"Otherwise apply overlay :
sudo ldapmodify -a -Y EXTERNAL -H ldapi:/// <<!
dn: olcOverlay=memberof,olcDatabase={1}mdb,cn=config
objectClass: olcOverlayConfig
objectClass: olcMemberOf
olcOverlay: memberof
olcMemberOfRefint: TRUE
!