database meta suffix "dc=example,dc=com" uri "ldap://localhost/ou=backend1,dc=example,dc=com" suffixmassage "ou=backend1,dc=example,dc=com" "ou=backend1" uri "ldap://localhost/ou=backend2,dc=example,dc=com" suffixmassage "ou=backend2,dc=example,dc=com" "ou=backend2"