diff --git a/data/hooks/conf_regen/06-slapd b/data/hooks/conf_regen/06-slapd
index 9f808b58e..695a31fd6 100755
--- a/data/hooks/conf_regen/06-slapd
+++ b/data/hooks/conf_regen/06-slapd
@@ -13,7 +13,31 @@ do_init_regen() {
   do_pre_regen ""
 
   systemctl daemon-reload
-  
+
+  systemctl restart slapd
+
+  # Drop current existing slapd data
+
+  rm -rf /var/backups/*.ldapdb
+  rm -rf /var/backups/slapd-*
+
+debconf-set-selections << EOF
+slapd slapd/password1 password yunohost
+slapd slapd/password2 password yunohost
+slapd slapd/domain string yunohost.org
+slapd shared/organization  string yunohost.org
+slapd slapd/allow_ldap_v2 boolean false
+slapd slapd/invalid_config boolean true
+slapd slapd/backend select MDB
+slapd slapd/move_old_database boolean true
+slapd slapd/no_configuration boolean false
+slapd slapd/purge_database boolean false
+EOF
+
+  DEBIAN_FRONTEND=noninteractive dpkg-reconfigure slapd -u
+
+  # Regen conf
+
   _regenerate_slapd_conf
 
    # Enforce permissions
@@ -21,7 +45,11 @@ do_init_regen() {
   chown -R openldap:openldap /etc/ldap/schema/
   usermod -aG ssl-cert openldap
 
-  service slapd restart
+  systemctl restart slapd
+
+  # (Re-)init data according to ldap_scheme.yaml
+
+  yunohost tools shell -c "from yunohost.tools import tools_ldapinit; tools_ldapinit()"
 }
 
 _regenerate_slapd_conf() {
@@ -31,7 +59,8 @@ _regenerate_slapd_conf() {
   # so we use a temporary directory slapd_new.d
   rm -Rf /etc/ldap/slapd_new.d
   mkdir /etc/ldap/slapd_new.d
-  slapadd -n0 -l /etc/ldap/slapd.ldif -F /etc/ldap/slapd_new.d/ 2>&1
+  slapadd -n0 -l /etc/ldap/slapd.ldif -F /etc/ldap/slapd_new.d/ 2>&1 \
+      | grep -v "none elapsed\|Closing DB" || true
   # Actual validation (-Q is for quiet, -u is for dry-run)
   slaptest -Q -u -F /etc/ldap/slapd_new.d
 
diff --git a/data/hooks/conf_regen/09-nslcd b/data/hooks/conf_regen/09-nslcd
index 7090fc758..2e911b328 100755
--- a/data/hooks/conf_regen/09-nslcd
+++ b/data/hooks/conf_regen/09-nslcd
@@ -2,6 +2,11 @@
 
 set -e
 
+do_init_regen() {
+  do_pre_regen ""
+  systemctl restart nslcd
+}
+
 do_pre_regen() {
   pending_dir=$1
 
@@ -14,7 +19,7 @@ do_post_regen() {
   regen_conf_files=$1
 
   [[ -z "$regen_conf_files" ]] \
-    || service nslcd restart
+    || systemctl restart nslcd
 }
 
 FORCE=${2:-0}
@@ -27,6 +32,9 @@ case "$1" in
   post)
     do_post_regen $4
     ;;
+  init)
+    do_init_regen
+    ;;
   *)
     echo "hook called with unknown argument \`$1'" >&2
     exit 1
diff --git a/data/hooks/conf_regen/46-nsswitch b/data/hooks/conf_regen/46-nsswitch
index fa9b07511..e6d998094 100755
--- a/data/hooks/conf_regen/46-nsswitch
+++ b/data/hooks/conf_regen/46-nsswitch
@@ -2,6 +2,11 @@
 
 set -e
 
+do_init_regen() {
+  do_pre_regen ""
+  systemctl restart unscd
+}
+
 do_pre_regen() {
   pending_dir=$1
 
@@ -14,7 +19,7 @@ do_post_regen() {
   regen_conf_files=$1
 
   [[ -z "$regen_conf_files" ]] \
-    || service unscd restart
+    || systemctl restart unscd
 }
 
 FORCE=${2:-0}
@@ -27,6 +32,9 @@ case "$1" in
   post)
     do_post_regen $4
     ;;
+  init)
+    do_init_regen
+    ;;
   *)
     echo "hook called with unknown argument \`$1'" >&2
     exit 1
diff --git a/debian/postinst b/debian/postinst
index 4b43b2506..e5f133fe6 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -8,6 +8,8 @@ do_configure() {
   if [ ! -f /etc/yunohost/installed ]; then
       bash /usr/share/yunohost/hooks/conf_regen/01-yunohost init
       bash /usr/share/yunohost/hooks/conf_regen/02-ssl init
+      bash /usr/share/yunohost/hooks/conf_regen/09-nslcd init
+      bash /usr/share/yunohost/hooks/conf_regen/46-nsswitch init
       bash /usr/share/yunohost/hooks/conf_regen/06-slapd init
       bash /usr/share/yunohost/hooks/conf_regen/15-nginx init
   else
diff --git a/src/yunohost/__init__.py b/src/yunohost/__init__.py
index 76449a7e4..a21dad2b9 100644
--- a/src/yunohost/__init__.py
+++ b/src/yunohost/__init__.py
@@ -53,6 +53,7 @@ def check_command_is_valid_before_postinstall(args):
 
     allowed_if_not_postinstalled = ['tools postinstall',
                                     'tools versions',
+                                    'tools shell',
                                     'backup list',
                                     'backup restore',
                                     'log display']
diff --git a/src/yunohost/tools.py b/src/yunohost/tools.py
index f01f6adb8..ce20e03a6 100644
--- a/src/yunohost/tools.py
+++ b/src/yunohost/tools.py
@@ -59,8 +59,6 @@ def tools_versions():
 def tools_ldapinit():
     """
     YunoHost LDAP initialization
-
-
     """
 
     with open('/usr/share/yunohost/yunohost-config/moulinette/ldap_scheme.yml') as f:
@@ -288,12 +286,6 @@ def tools_postinstall(operation_logger, domain, password, ignore_dyndns=False,
     operation_logger.start()
     logger.info(m18n.n('yunohost_installing'))
 
-    regen_conf(['nslcd', 'nsswitch'], force=True)
-
-    # Initialize LDAP for YunoHost
-    # TODO: Improve this part by integrate ldapinit into conf_regen hook
-    tools_ldapinit()
-
     # Create required folders
     folders_to_create = [
         '/etc/yunohost/apps',