cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
/etc/init.d/slapd stop

rm -rf /var/lib/ldap/*
rm -rf /etc/openldap/slapd.d/*

slapadd -l 2020-03-07_ldapdbak.ldif
chown -R ldap:ldap /var/lib/ldap/

slaptest -f /etc/openldap/slapd.conf -F /etc/openldap/slapd.d
chown -R ldap:ldap /etc/openldap/

/etc/init.d/slapd start

ldapsearch -D "cn=admin,dc=test,dc=com" -w test -b "dc=test,dc=com" -h 127.0.0.1|grep user