diff --git a/README.md b/README.md
index f29fcfd..781e99f 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Home automation platform
 
-**Shipped version:** 2021.12.7~ynh1
+**Shipped version:** 2021.12.8~ynh1
 
 **Demo:** https://demo.home-assistant.io
 
diff --git a/README_fr.md b/README_fr.md
index d45b45a..67629db 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Plateforme domotique
 
-**Version incluse :** 2021.12.7~ynh1
+**Version incluse :** 2021.12.8~ynh1
 
 **Démo :** https://demo.home-assistant.io
 
diff --git a/conf/homeassistant_conf_files/automations.yaml b/conf/homeassistant_conf_files/automations.yaml
new file mode 100644
index 0000000..e69de29
diff --git a/conf/homeassistant_conf_files/configuration.yaml b/conf/homeassistant_conf_files/configuration.yaml
index a500827..8d2ec90 100644
--- a/conf/homeassistant_conf_files/configuration.yaml
+++ b/conf/homeassistant_conf_files/configuration.yaml
@@ -11,9 +11,17 @@ http:
     - 127.0.0.1
     - ::1
 
+recorder:
+  db_url: mysql://__DB_USER__:__DB_PWD__@127.0.0.1/__DB_NAME__?unix_socket=/var/run/mysqld/mysqld.sock&charset=utf8mb4
+    
 # Apply default set of integrations
 default_config:
 
+# Linked yaml files
+automation: !include automations.yaml
+script: !include scripts.yaml
+scene: !include scenes.yaml
+
 # Switches
 switch:
   - platform: command_line
diff --git a/conf/homeassistant_conf_files/scenes.yaml b/conf/homeassistant_conf_files/scenes.yaml
new file mode 100644
index 0000000..e69de29
diff --git a/conf/homeassistant_conf_files/scripts.yaml b/conf/homeassistant_conf_files/scripts.yaml
new file mode 100644
index 0000000..e69de29
diff --git a/conf/systemd.service b/conf/systemd.service
index a42c0db..7559fe1 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -1,6 +1,6 @@
 [Unit]
 Description=Home Assistant
-After=network.target
+After=network.target mysql.service
 
 [Service]
 Type=simple
@@ -20,7 +20,7 @@ PrivateTmp=yes
 #CANT BE ACTIVATED FOR __APP__ #RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 RestrictNamespaces=yes
 RestrictRealtime=yes
-DevicePolicy=closed
+#CANT BE ACTIVATED FOR __APP__ (see issue #40) #DevicePolicy=closed
 ProtectSystem=full
 ProtectControlGroups=yes
 ProtectKernelModules=yes
diff --git a/manifest.json b/manifest.json
index 1918ef9..3a6c136 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
     "en": "Home automation platform",
     "fr": "Plateforme domotique"
   },
-  "version": "2021.12.7~ynh1",
+  "version": "2021.12.8~ynh1",
   "url": "https://github.com/home-assistant/home-assistant",
   "upstream": {
     "license": "Apache-2.0",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0bfac6b..8f76b58 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -3,18 +3,25 @@
 #
 
 # Release to install
-VERSION=2021.12.7
+VERSION=2021.12.8
 
 # Package dependencies
-PKG_DEPENDENCIES="python3 python3-dev python3-venv python3-pip libffi-dev libssl-dev libjpeg-dev zlib1g-dev autoconf build-essential libopenjp2-7 libtiff5"
+PKG_DEPENDENCIES="python3 python3-dev python3-venv python3-pip libffi-dev libssl-dev libjpeg-dev zlib1g-dev autoconf build-essential libopenjp2-7 libtiff5 libturbojpeg0 libmariadbclient-dev libmariadb-dev-compat"
 
 # Requirements (Major.Minor.Patch)
 # PY_VERSION=$(curl -s "https://www.python.org/ftp/python/" | grep ">3.9" | tail -n1 | cut -d '/' -f 2 | cut -d '>' -f 2)
 # Pyhton 3.9.2 will be shiped with bullseye
 PY_REQUIRED_VERSION=3.9.2
 
-# System groups allowed to homeassistant user
-USER_GROUPS="dialout gpio i2c"
+# Create homeassistant user
+mynh_user_create () {
+    USER_GROUPS=""
+    [ $(getent group dialout) ] && USER_GROUPS="${USER_GROUPS} dialout"
+    [ $(getent group gpio) ] && USER_GROUPS="${USER_GROUPS} gpio"
+    [ $(getent group i2c) ] && USER_GROUPS="${USER_GROUPS} i2c"
+    ynh_system_user_create --username="$app" --groups="$USER_GROUPS"
+}
+
 
 # Check if directory/file already exists (path in argument)
 myynh_check_path () {
@@ -135,6 +142,8 @@ myynh_install_homeassistant () {
 			&& source "$final_path/bin/activate" \
 		&& echo 'install last version of wheel' \
 			&& pip --cache-dir "$data_path/.cache" install --upgrade wheel \
+		&& echo 'install last version of mysqlclient' \
+			&& pip --cache-dir "$data_path/.cache" install --upgrade mysqlclient \
 		&& echo 'install Home Assistant' \
 			&& pip --cache-dir "$data_path/.cache" install --upgrade $app==$VERSION \
 		"
diff --git a/scripts/backup b/scripts/backup
index 02d2ff8..8333b29 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -17,6 +17,7 @@ data_path=$(ynh_app_setting_get --app="$app" --key=data_path)
 log_file=$(ynh_app_setting_get --app="$app" --key=log_file)
 path_url=$(ynh_app_setting_get --app="$app" --key=path_url)
 python=$(ynh_app_setting_get --app="$app" --key=python)
+db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 
 # backup source & conf files
 ynh_print_info  --message="Declaring files to be backed up..."
@@ -28,4 +29,8 @@ ynh_backup --src_path="/etc/systemd/system/$app.service"
 ynh_backup --src_path="/etc/logrotate.d/$app"
 ynh_backup --src_path="$(dirname "$log_file")"
 
+# backup the MySQL database
+ynh_print_info --message="Backing up the MySQL database..."
+ynh_mysql_dump_db --database="$db_name" > db.sql
+
 ynh_print_info --message="Backup of $app completed"
diff --git a/scripts/install b/scripts/install
index 6778034..b958ae9 100644
--- a/scripts/install
+++ b/scripts/install
@@ -41,7 +41,7 @@ ynh_app_setting_set --app="$app" --key=path_url --value="$path_url"
 
 # create a dedicated system user
 ynh_script_progression --message="Creating dedicated user, rights and folders..."
-ynh_system_user_create --username="$app" --groups="$USER_GROUPS"
+mynh_user_create
 
 # create a directory for the installation of Home Assistant
 myynh_create_dir "$final_path"
@@ -59,6 +59,13 @@ chown -R $app: "$data_path"
 ynh_script_progression --message="Installing dependencies..."
 myynh_install_dependencies --python="$PY_REQUIRED_VERSION"
 
+# create a MySQL database
+ynh_script_progression --message="Creating a MySQL database..."
+db_name=$(ynh_sanitize_dbid --db_name=$app)
+db_user=$db_name
+ynh_app_setting_set --app=$app --key=db_name --value=$db_name
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
+
 # installation in a virtual environment
 ynh_script_progression --message="Installing Home Assistant in a virtual environment..."
 ynh_exec_fully_quiet myynh_install_homeassistant
diff --git a/scripts/remove b/scripts/remove
index 9fb0765..0d240cc 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -14,6 +14,8 @@ data_path=$(ynh_app_setting_get --app="$app" --key=data_path)
 log_file=$(ynh_app_setting_get --app="$app" --key=log_file)
 path_url=$(ynh_app_setting_get --app="$app" --key=path_url)
 python=$(ynh_app_setting_get --app="$app" --key=python)
+db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 
 # Remove a service from the admin panel, added by `yunohost service add`
 if ynh_exec_warn_less yunohost service status "$app" >/dev/null ; then
@@ -29,6 +31,10 @@ ynh_remove_systemd_config --service="$app"
 ynh_script_progression --message="Removing logrotate configuration..."
 ynh_remove_logrotate
 
+# remove the MySQL database
+ynh_script_progression --message="Removing the MySQL database..."
+ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
+
 # remove metapackage and its dependencies
 ynh_script_progression --message="Removing dependencies..."
 ynh_remove_app_dependencies
diff --git a/scripts/restore b/scripts/restore
index 1a4a152..de8fa9a 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -23,6 +23,8 @@ data_path=$(ynh_app_setting_get --app="$app" --key=data_path)
 log_file=$(ynh_app_setting_get --app="$app" --key=log_file)
 path_url=$(ynh_app_setting_get --app="$app" --key=path_url)
 python=$(ynh_app_setting_get --app="$app" --key=python)
+db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+db_user=$db_name
 
 # check domain/path availability
 ynh_script_progression --message="Validating recovery parameters..."
@@ -34,9 +36,13 @@ ynh_exec_warn_less yunohost firewall allow TCP $port
 
 # restore dedicated system user
 ynh_script_progression --message="Restoring dedicated user and rights folders..."
-ynh_system_user_create --username="$app" --groups="$USER_GROUPS"
+mynh_user_create
 ynh_restore_file --origin_path="/etc/sudoers.d/$app"
 
+# restore nginx
+ynh_script_progression --message="Restoring nginx web server..."
+ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+
 # restore source
 ynh_script_progression --message="Restoring the app..."
 ynh_restore_file --origin_path="$final_path"
@@ -53,6 +59,12 @@ ynh_restore_file --origin_path="$(dirname "$log_file")"
 ynh_script_progression --message="Restoring the packages dependencies..."
 myynh_install_dependencies --python="$python"
 
+# restore the MySQL database
+ynh_script_progression --message="Restoring the MySQL database..."
+db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
+ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
+ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
+
 # restore the systemd service
 ynh_script_progression --message="Restoring the dedicated service..."
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
@@ -69,18 +81,17 @@ sed --in-place "/ExecStart/s/$/ --verbose/" "/etc/systemd/system/$app.service"
 ynh_systemd_action --service_name="$app" --action=start --line_match="Home Assistant initialized" --log_path="$log_file" --timeout=900
 
 # remove --verbose from service and restart
-ynh_replace_string --match_string=" --verbose" --replace_string="" --target_file="/etc/systemd/system/$app.service"
-ynh_store_file_checksum --file="/etc/systemd/system/$app.service"
-systemctl daemon-reload
-ynh_systemd_action --service_name="$app" --action=restart
+#ynh_replace_string --match_string=" --verbose" --replace_string="" --target_file="/etc/systemd/system/$app.service"
+#ynh_store_file_checksum --file="/etc/systemd/system/$app.service"
+#systemctl daemon-reload
+#ynh_systemd_action --service_name="$app" --action=restart
 
 # restore logrotate
 ynh_script_progression --message="Restoring logrotate..."
 ynh_restore_file --origin_path="/etc/logrotate.d/$app"
 
-# restore nginx
-ynh_script_progression --message="Restoring nginx web server..."
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+# reload nginx
+ynh_script_progression --message="Reloading NGINX web server..."
 ynh_systemd_action --service_name=nginx --action=reload
 
-ynh_script_progression --message="Recovery of $app completed" --last
+ynh_script_progression --message="Restoration completed for $app" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index d75fd2d..a4a5c8c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -77,6 +77,20 @@ if [ ! -f "$log_file" ]; then
   myynh_create_dir "$(dirname "$log_file")"
   touch "$log_file"
 fi
+if [ -z $(ynh_app_setting_get --app="$app" --key=db_name) ]; then
+  # create a MySQL database
+  db_name=$(ynh_sanitize_dbid --db_name=$app)
+  db_user=$db_name
+  ynh_app_setting_set --app=$app --key=db_name --value=$db_name
+  ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
+  db_pwd=$(ynh_app_setting_get --app="$app" --key=mysqlpwd)
+  if [ -z $(sed -n "/recorder:/=" configuration.yaml) ]; then
+    sed -i "$ a recorder:" "$data_path/configuration.yaml"
+    sed -i "$ a \  db_url: mysql://$db_user:$db_pwd@127.0.0.1/$db_name?unix_socket=/var/run/mysqld/mysqld.sock&charset=utf8mb4" "$data_path/configuration.yaml"
+  else
+    sed -i "/recorder:/a \  db_url: mysql://$db_user:$db_pwd@127.0.0.1/$db_name?unix_socket=/var/run/mysqld/mysqld.sock&charset=utf8mb4" "$data_path/configuration.yaml"
+  fi
+fi
 
 # installation in a virtual environment
 ynh_script_progression --message="Installing Home Assistant in a virtual environment..."
@@ -92,6 +106,7 @@ ynh_add_systemd_config
 
 # grant sudo permissions to the user to manage his own systemd service
 ynh_script_progression --message="Creating dedicated user, rights and folders..."
+mynh_user_create
 ynh_add_config --template="../conf/sudoers" --destination="/etc/sudoers.d/$app"
 
 # add service in admin panel