diff --git a/.gitignore b/.gitignore
index d226724..1def7b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .*
 !.gitignore
-__pycache__
\ No newline at end of file
+__pycache__
+secret.txt
\ No newline at end of file
diff --git a/README.md b/README.md
index 24b650d..6719244 100644
--- a/README.md
+++ b/README.md
@@ -48,9 +48,56 @@ Developer info
 
 Please send your pull request to https://github.com/jedie/pyinventory_ynh
 
-Try e.g.:
-```
+Try 'main' branch, e.g.:
+```bash
 sudo yunohost app install https://github.com/jedie/pyinventory_ynh/tree/main --debug
 or
 sudo yunohost app upgrade pyinventory -u https://github.com/jedie/pyinventory_ynh/tree/main --debug
 ```
+
+Try 'testing' branch, e.g.:
+```bash
+sudo yunohost app install https://github.com/jedie/pyinventory_ynh/tree/testing --debug
+or
+sudo yunohost app upgrade pyinventory -u https://github.com/jedie/pyinventory_ynh/tree/testing --debug
+```
+
+To remove call e.g.:
+```bash
+sudo yunohost app remove pyinventory
+```
+
+Debug installation, e.g.:
+```bash
+root@yunohost:~# ls -la /var/www/pyinventory/
+total 18
+drwxr-xr-x 4 root root 4 Dec  8 08:36 .
+drwxr-xr-x 6 root root 6 Dec  8 08:36 ..
+drwxr-xr-x 2 root root 2 Dec  8 08:36 media
+drwxr-xr-x 7 root root 8 Dec  8 08:40 static
+
+root@yunohost:~# ls -la /opt/yunohost/pyinventory/
+total 58
+drwxr-xr-x 5 pyinventory pyinventory   11 Dec  8 08:39 .
+drwxr-xr-x 3 root        root           3 Dec  8 08:36 ..
+-rw-r--r-- 1 pyinventory pyinventory  460 Dec  8 08:39 gunicorn.conf.py
+-rw-r--r-- 1 pyinventory pyinventory    0 Dec  8 08:39 local_settings.py
+-rwxr-xr-x 1 pyinventory pyinventory  274 Dec  8 08:39 manage.py
+-rw-r--r-- 1 pyinventory pyinventory  171 Dec  8 08:39 secret.txt
+drwxr-xr-x 6 pyinventory pyinventory    6 Dec  8 08:37 venv
+-rw-r--r-- 1 pyinventory pyinventory  115 Dec  8 08:39 wsgi.py
+-rw-r--r-- 1 pyinventory pyinventory 4737 Dec  8 08:39 ynh_pyinventory_settings.py
+
+root@yunohost:~# cd /opt/yunohost/pyinventory/
+root@yunohost:/opt/yunohost/pyinventory# source venv/bin/activate
+(venv) root@yunohost:/opt/yunohost/pyinventory# ./manage.py check
+PyInventory v0.8.1rc1 (Django v2.2.17)
+DJANGO_SETTINGS_MODULE='ynh_pyinventory_settings'
+PROJECT_PATH:/opt/yunohost/pyinventory/venv/lib/python3.7/site-packages
+BASE_PATH:/opt/yunohost/pyinventory
+System check identified no issues (0 silenced).
+
+root@yunohost:~# tail -f /var/log/pyinventory/pyinventory.log
+root@yunohost:~# cat /etc/systemd/system/pyinventory.service
+root@yunohost:~# ynh_systemd_action --service_name="pyinventory" --action="restart"
+```
\ No newline at end of file
diff --git a/conf/gunicorn.conf.py b/conf/gunicorn.conf.py
index 88cb667..fde7958 100644
--- a/conf/gunicorn.conf.py
+++ b/conf/gunicorn.conf.py
@@ -3,7 +3,6 @@
 """
 import multiprocessing
 
-
 bind = '127.0.0.1:__PORT__'
 
 # https://docs.gunicorn.org/en/latest/settings.html#workers
@@ -12,8 +11,9 @@ workers = multiprocessing.cpu_count() * 2 + 1
 # https://docs.gunicorn.org/en/latest/settings.html#logging
 loglevel = 'info'
 
-# https://docs.gunicorn.org/en/latest/settings.html#syslog
-syslog = True
+# https://docs.gunicorn.org/en/latest/settings.html#logging
+accesslog = '__LOG_FILE__'
+errorlog = '__LOG_FILE__'
 
 # https://docs.gunicorn.org/en/latest/settings.html#pidfile
 pidfile = '__FINAL_HOME_PATH__/gunicorn.pid'
diff --git a/conf/nginx.conf b/conf/nginx.conf
index a308033..9c3cf6f 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,5 +1,6 @@
 
 location /static/ {
+	# Django static files
 	alias __PUBLIC_PATH__/static/;
 	expires 30d;
 }
@@ -12,26 +13,24 @@ location /static/ {
 #}
 
 location / {
+	# https://github.com/benoitc/gunicorn/blob/master/examples/nginx.conf
+
 	# this is needed if you have file import via upload enabled
 	client_max_body_size 100M;
 
 	proxy_http_version 1.1;
 	proxy_set_header Host $host;
-	proxy_set_header X-Forwarded-For $remote_addr;
-	proxy_set_header X-Forwarded-Proto $scheme;
+	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 	proxy_set_header X-Forwarded-Protocol $scheme;
 	proxy_set_header X-Real-IP $remote_addr;
-	proxy_set_header X-Cert-Hash $ssl_client_fingerprint;
-	proxy_set_header X-SSL-Protocol $ssl_protocol;
 	proxy_set_header X-Scheme $scheme;
 
 	proxy_read_timeout 30;
 	proxy_send_timeout 30;
 	proxy_connect_timeout 30;
-	proxy_redirect off;
+  proxy_redirect off;
 
-	set $upstream http://127.0.0.1:__PORT__/;
-	proxy_pass $upstream;
+	proxy_pass http://127.0.0.1:__PORT__/;
 
 	# Include SSOWAT user panel.
 	#include conf.d/yunohost_panel.conf.inc;
diff --git a/conf/pyinventory.service b/conf/pyinventory.service
index 858b289..67f504b 100644
--- a/conf/pyinventory.service
+++ b/conf/pyinventory.service
@@ -7,7 +7,7 @@ User=__APP__
 Group=__APP__
 WorkingDirectory=__FINALPATH__/
 
-ExecStart=__FINALPATH__/virtualenv/bin/gunicorn --config __FINALPATH__/gunicorn.conf.py wsgi
+ExecStart=__FINALPATH__/venv/bin/gunicorn --config __FINALPATH__/gunicorn.conf.py wsgi
 
 StandardOutput=syslog
 StandardError=syslog
diff --git a/conf/secret.txt b/conf/secret.txt
deleted file mode 100644
index f47048a..0000000
--- a/conf/secret.txt
+++ /dev/null
@@ -1 +0,0 @@
-Dihmi_RjizdIJsCMt0y6UbRhtYyzegbBx6BF4MDzC_WIS1iNBkXQcWSlN049hfkJbdkBGPjczk79qONSfF5JfZ-SnXyzB7_7ZVZyTvDY_6jLAw0FIfH-vQzH4ETy8_FYfY7Mj3e2YJqZ_jJiR-WgBO2F2WE__yqiSlQ-8LFhHZI
\ No newline at end of file
diff --git a/conf/wsgi.py b/conf/wsgi.py
index d9598cf..34badf7 100644
--- a/conf/wsgi.py
+++ b/conf/wsgi.py
@@ -1,9 +1,8 @@
 """
     WSGI config
 """
-
+import os
+os.environ['DJANGO_SETTINGS_MODULE'] = 'ynh_pyinventory_settings'
 
 from django.core.wsgi import get_wsgi_application
-
-
-application = get_wsgi_application()
+application = get_wsgi_application()
\ No newline at end of file
diff --git a/conf/ynh_pyinventory_settings.py b/conf/ynh_pyinventory_settings.py
index e7f2f09..dfab0db 100644
--- a/conf/ynh_pyinventory_settings.py
+++ b/conf/ynh_pyinventory_settings.py
@@ -8,7 +8,7 @@
 
 ################################################################################
 ################################################################################
-from logging.handlers import SysLogHandler
+
 from pathlib import Path as __Path
 
 from inventory_project.settings.base import *  # noqa
@@ -17,8 +17,14 @@ DEBUG = False
 
 # -----------------------------------------------------------------------------
 
-FINAL_HOME_PATH = '__FINAL_HOME_PATH__'
-FINAL_WWW_PATH = '__FINAL_WWW_PATH__'
+FINAL_HOME_PATH = __Path('__FINAL_HOME_PATH__')
+assert FINAL_HOME_PATH.is_dir(), f'Directory not exists: {FINAL_HOME_PATH}'
+
+FINAL_WWW_PATH = __Path('__FINAL_WWW_PATH__')
+assert FINAL_WWW_PATH.is_dir(), f'Directory not exists: {FINAL_WWW_PATH}'
+
+LOG_FILE = __Path('__LOG_FILE__')
+assert LOG_FILE.is_file(), f'File not exists: {LOG_FILE}'
 
 # -----------------------------------------------------------------------------
 
@@ -28,8 +34,6 @@ ADMINS = (
 
 MANAGERS = ADMINS
 
-SECRET_KEY = '__KEY__'
-
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',
@@ -62,7 +66,6 @@ DEFAULT_FROM_EMAIL = '__ADMINMAIL__'
 # List of URLs your site is supposed to serve
 ALLOWED_HOSTS = ['__DOMAIN__']
 
-
 # _____________________________________________________________________________
 # Configuration for caching
 CACHES = {
@@ -86,10 +89,10 @@ CACHES = {
 # Static files (CSS, JavaScript, Images)
 
 STATIC_URL = '/static/'
-STATIC_ROOT = str(__Path(FINAL_WWW_PATH, 'static'))
+STATIC_ROOT = str(FINAL_WWW_PATH / 'static')
 
 MEDIA_URL = '/media/'
-MEDIA_ROOT = str(__Path(FINAL_WWW_PATH, 'media'))
+MEDIA_ROOT = str(FINAL_WWW_PATH / 'media')
 
 # -----------------------------------------------------------------------------
 
@@ -111,18 +114,17 @@ LOGGING = {
         },
         'syslog': {
             'level': 'DEBUG',
-            'class': 'logging.handlers.SysLogHandler',
+            'class': 'logging.handlers.WatchedFileHandler',
             'formatter': 'verbose',
-            'address': '/dev/log',
-            'facility': SysLogHandler.LOG_LOCAL2,
+            'filename': str(LOG_FILE),
         },
     },
     'loggers': {
-        '': {'handlers': ['syslog', 'mail_admins'], 'level': 'DEBUG', 'propagate': False},
+        '': {'handlers': ['syslog', 'mail_admins'], 'level': 'INFO', 'propagate': False},
         'django': {'handlers': ['syslog', 'mail_admins'], 'level': 'INFO', 'propagate': False},
         'axes': {'handlers': ['syslog', 'mail_admins'], 'level': 'WARNING', 'propagate': False},
         'django_tools': {'handlers': ['syslog', 'mail_admins'], 'level': 'INFO', 'propagate': False},
-        'inventory': {'handlers': ['syslog', 'mail_admins'], 'level': 'DEBUG', 'propagate': False},
+        'inventory': {'handlers': ['syslog', 'mail_admins'], 'level': 'INFO', 'propagate': False},
     },
 }
 
diff --git a/manifest.json b/manifest.json
index f55a7b8..a081c8a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -5,19 +5,16 @@
 	"description": {
 		"en": "Web based management to catalog things including state and location etc."
 	},
-	"version": "0.8.1rc1~ynh1",
+	"version": "0.8.1rc1~ynh2",
 	"url": "https://github.com/jedie/PyInventory",
 	"license": "GPL-3.0",
 	"maintainer": {
-		"name": "",
-		"email": ""
-	},
-	"previous_maintainers": [{
 		"name": "Jens Diemer",
 		"email": "pyinventory_yng@jensdiemer.de"
-	}],
+	},
+	"previous_maintainers": [],
 	"requirements": {
-		"yunohost": ">= 4.0.8"
+		"yunohost": ">= 4.0"
 	},
 	"multi_instance": true,
 	"services": [
@@ -35,14 +32,13 @@
 				"example": "domain.org"
 			},
 			{
-				"name": "path",
-				"type": "path",
+				"name": "admin",
+				"type": "user",
 				"ask": {
-				    "en": "Choose a path for PyInventory",
-				    "fr": "Choisissez un chemin pour PyInventory"
+				    "en": "Choose an admin user for PyInventory",
+				    "fr": "Choisissez l'administrateur pour PyInventory"
 				},
-				"example": "/pyinventory",
-				"default": "/pyinventory"
+				"example": "johndoe"
 			},
 			{
 				"name": "is_public",
@@ -56,15 +52,6 @@
 					"fr": "Tout utilisateur YunoHost et les personnes anonymes pourront accéder à l'application"
 				},
 				"default": false
-			},
-			{
-				"name": "admin",
-				"type": "user",
-				"ask": {
-				    "en": "Choose an admin user for PyInventory",
-				    "fr": "Choisissez l'administrateur pour PyInventory"
-				},
-				"example": "johndoe"
 			}
 		]
 	}
diff --git a/scripts/_common.sh b/scripts/_common.sh
index a1a741d..8db757c 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,20 +5,19 @@
 #=================================================
 
 domain=$YNH_APP_ARG_DOMAIN
-path_url=$YNH_APP_ARG_PATH
+path_url="/"
 admin=$YNH_APP_ARG_ADMIN
 is_public=$YNH_APP_ARG_IS_PUBLIC
-
 app=$YNH_APP_INSTANCE_NAME
 
-
 #=================================================
 # SET CONSTANTS
 #=================================================
 
 public_path=/var/www/$app
 final_path=/opt/yunohost/$app
-
+log_path=/var/log/$app
+log_file="${log_path}/pyinventory.log"
 
 #=================================================
 # COMMON VARIABLES
@@ -28,77 +27,10 @@ final_path=/opt/yunohost/$app
 pkg_dependencies="build-essential python3-dev python3-pip python3-virtualenv virtualenv git \
 	postgresql postgresql-contrib"
 
-python_version="$(python3 -V | cut -d' ' -f2 | cut -d. -f1-2)"
-
 # PyInventory's version for PIP and settings file
 pyinventory_version="0.8.1rc1"
 
 
-#=================================================
-# EXPERIMENTAL HELPERS
-#=================================================
-
-# Send an email to inform the administrator
-#
-# usage: ynh_send_readme_to_admin app_message [recipients]
-# | arg: app_message - The message to send to the administrator.
-# | arg: recipients - The recipients of this email. Use spaces to separate multiples recipients. - default: root
-#	example: "root admin@domain"
-#	If you give the name of a YunoHost user, ynh_send_readme_to_admin will find its email adress for you
-#	example: "root admin@domain user1 user2"
-ynh_send_readme_to_admin() {
-	local app_message="${1:-...No specific information...}"
-	local recipients="${2:-root}"
-
-	# Retrieve the email of users
-	find_mails () {
-		local list_mails="$1"
-		local mail
-		local recipients=" "
-		# Read each mail in argument
-		for mail in $list_mails
-		do
-			# Keep root or a real email address as it is
-			if [ "$mail" = "root" ] || echo "$mail" | grep --quiet "@"
-			then
-				recipients="$recipients $mail"
-			else
-				# But replace an user name without a domain after by its email
-				if mail=$(ynh_user_get_info "$mail" "mail" 2> /dev/null)
-				then
-					recipients="$recipients $mail"
-				fi
-			fi
-		done
-		echo "$recipients"
-	}
-	recipients=$(find_mails "$recipients")
-
-	local mail_subject="☁️🆈🅽🅷☁️: \`$app\` was just installed!"
-
-	local mail_message="This is an automated message from your beloved YunoHost server.
-
-Specific information for the application $app.
-
-$app_message
-
----
-Automatic diagnosis data from YunoHost
-
-$(yunohost tools diagnosis | grep -B 100 "services:" | sed '/services:/d')"
-
-	# Define binary to use for mail command
-	if [ -e /usr/bin/bsd-mailx ]
-	then
-		local mail_bin=/usr/bin/bsd-mailx
-	else
-		local mail_bin=/usr/bin/mail.mailutils
-	fi
-
-	# Send the email to the recipients
-	echo "$mail_message" | $mail_bin -a "Content-Type: text/plain; charset=UTF-8" -s "$mail_subject" "$recipients"
-}
-
 #=================================================
 # Redis HELPERS
 #=================================================
@@ -139,8 +71,4 @@ ynh_redis_get_free_db() {
 ynh_redis_remove_db() {
 	local db=$1
 	redis-cli -n "$db" flushall
-}
-
-
-
-
+}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 301b3a2..c4b20fa 100755
--- a/scripts/install
+++ b/scripts/install
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -28,11 +26,14 @@ test ! -e "$public_path" || ynh_die --message="This path already contains a fold
 test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
 # Register (book) web path
-ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
+ynh_webpath_register --app="$app" --domain="$domain" --path_url="$path_url"
 
 mkdir -p "$public_path/media" "$public_path/static"
 mkdir -p "$final_path"
 
+sudo mkdir -p "$log_path"
+sudo touch "${log_file}"
+
 #=================================================
 # STORE SETTINGS FROM MANIFEST
 #=================================================
@@ -44,6 +45,17 @@ ynh_app_setting_set --app="$app" --key=admin --value="$admin"
 ynh_app_setting_set --app="$app" --key=is_public --value="$is_public"
 ynh_app_setting_set --app="$app" --key=public_path --value="$public_path"
 ynh_app_setting_set --app="$app" --key=final_path --value="$final_path"
+ynh_app_setting_set --app="$app" --key=log_path --value="$log_file"
+
+# Find a free port
+port=$(ynh_find_port --port=8000)
+# Set port as application setting
+# https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/setting
+ynh_app_setting_set --app="$app" --key=port --value="$port"
+
+db_pwd=$(ynh_app_setting_get --app="$app" --key=psqlpwd)
+admin_mail=$(ynh_user_get_info --username="$admin" --key=mail)
+redis_db=$(ynh_redis_get_free_db)
 
 #=================================================
 # STANDARD MODIFICATIONS
@@ -75,7 +87,7 @@ ynh_script_progression --message="Configuring nginx web server..."
 
 # Create a dedicated nginx config
 # https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/nginx
-ynh_add_nginx_config "public_path"
+ynh_add_nginx_config "public_path" "port"
 
 #=================================================
 # CREATE DEDICATED USER
@@ -85,15 +97,13 @@ ynh_script_progression --message="Configuring system user..."
 # A home directory for venv and settings etc.
 ynh_system_user_create --username="$app" --home_dir="$final_path" --use_shell
 
-#=================================================
-# SPECIFIC SETUP
 #=================================================
 # PIP INSTALLATION
 #=================================================
 ynh_script_progression --message="Install PyInventory using PIP..." --weight=80
 
 virtualenv --python=python3 "${final_path}/venv"
-chown -R "$app": "$final_path"
+sudo chown -R "$app" "$final_path"
 
 #run source in a 'sub shell'
 (
@@ -106,19 +116,14 @@ chown -R "$app": "$final_path"
 )
 
 #=================================================
-# SPECIFIC SETUP
-# =================================================
+# copy config files
+# ================================================
 ynh_script_progression --message="Create pyinventory configuration file..."
 
-# Find a free port
-port=$(ynh_find_port --port=8000)
-# Set port as application setting
-# https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/setting
-ynh_app_setting_set --app="$app" --key=port --value="$port"
-
 gunicorn_conf="$final_path/gunicorn.conf.py"
 cp "../conf/gunicorn.conf.py" "$gunicorn_conf"
 ynh_replace_string --match_string="__FINAL_HOME_PATH__" --replace_string="$final_path" --target_file="$gunicorn_conf"
+ynh_replace_string --match_string="__LOG_FILE__" --replace_string="$log_file" --target_file="$gunicorn_conf"
 ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$gunicorn_conf"
 
 cp ../conf/manage.py "$final_path/manage.py"
@@ -129,26 +134,23 @@ cp ../conf/wsgi.py "$final_path/wsgi.py"
 settings="$final_path/ynh_pyinventory_settings.py"
 cp "../conf/ynh_pyinventory_settings.py" "$settings"
 
-touch "$final_path/local_settings.py"
-
-db_pwd=$(ynh_app_setting_get --app="$app" --key=psqlpwd)
-admin_mail=$(ynh_user_get_info --username="$admin" --key=mail)
-key=$(ynh_string_random --length=50)
-redis_db=$(ynh_redis_get_free_db)
-
 ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$settings"
 ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$settings"
 ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$settings"
 ynh_replace_string --match_string="__ADMINMAIL__" --replace_string="$admin_mail" --target_file="$settings"
 ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$settings"
-ynh_replace_string --match_string="__KEY__" --replace_string="$key" --target_file="$settings"
 ynh_replace_string --match_string="__FINAL_HOME_PATH__" --replace_string="$final_path" --target_file="$settings"
 ynh_replace_string --match_string="__FINAL_WWW_PATH__" --replace_string="$public_path" --target_file="$settings"
+ynh_replace_string --match_string="__LOG_FILE__" --replace_string="$log_file" --target_file="$settings"
 ynh_replace_string --match_string="__REDIS_DB__" --replace_string="$redis_db" --target_file="$settings"
-ynh_replace_string --match_string="__PYTHON_VERSION__" --replace_string="$python_version" --target_file="$settings"
+
+# Calculate and store the config file checksum into the app settings
+ynh_store_file_checksum --file="$settings"
 
 ynh_app_setting_set --app="$app" --key=redis_db --value="$redis_db"
 
+touch "$final_path/local_settings.py"
+
 #=================================================
 # MIGRATE / COLLECTSTATIC / CREATEADMIN
 #=================================================
@@ -173,19 +175,19 @@ ynh_script_progression --message="migrate/collectstatic/createadmin..." --weight
 )
 
 #=================================================
-# STORE THE CHECKSUM OF THE CONFIG FILE
+# SETUP LOGROTATE
 #=================================================
+ynh_script_progression --message="Configuring log rotation..."
 
-# Calculate and store the config file checksum into the app settings
-ynh_store_file_checksum --file="$settings"
+# Use logrotate to manage app-specific logfile(s)
+ynh_use_logrotate "$log_file"
 
 #=================================================
-# SETUP SYSTEMD
+# INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Configuring a systemd service..."
+ynh_script_progression --message="Integrating service in YunoHost..."
 
-# https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/systemd
-ynh_add_systemd_config --service="$app" --template="pyinventory.service"
+yunohost service add "$app" --log "${log_file}"
 
 #=================================================
 # GENERIC FINALIZATION
@@ -194,22 +196,17 @@ ynh_add_systemd_config --service="$app" --template="pyinventory.service"
 #=================================================
 
 # Set permissions to app files
-chown -R "$app": "$final_path"
+sudo chown -R "$app" "$log_path"
+sudo chown -R "$app" "$public_path"
+sudo chown -R "$app" "$final_path"
 
 #=================================================
-# SETUP LOGROTATE
+# SETUP SYSTEMD
 #=================================================
-ynh_script_progression --message="Configuring log rotation..."
+ynh_script_progression --message="Configuring a systemd service..."
 
-# Use logrotate to manage application logfile(s)
-ynh_use_logrotate --non-append
-
-#=================================================
-# INTEGRATE SERVICE IN YUNOHOST
-#=================================================
-ynh_script_progression --message="Integrating service in YunoHost..."
-
-yunohost service add "$app" --log "/var/log/$app/pyinventory.log"
+# https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/systemd
+ynh_add_systemd_config --service="$app" --template="pyinventory.service"
 
 #=================================================
 # SETUP SSOWAT
@@ -224,7 +221,7 @@ then
 fi
 
 #=================================================
-# Start pyinventory
+# Start pyinventory via systemd
 #=================================================
 ynh_script_progression --message="Starting PyInventory's services..." --weight=5
 
@@ -237,15 +234,6 @@ ynh_script_progression --message="Reloading nginx web server..."
 
 ynh_systemd_action --service_name="nginx" --action="reload"
 
-#=================================================
-# SEND A README FOR THE ADMIN
-#=================================================
 
-message="
-PyInventory settings file          : $settings
-If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/jedie/pyinventory_ynh
-"
-
-ynh_send_readme_to_admin "$message" "$admin"
 
 ynh_script_progression --message="Installation of $app completed" --last
diff --git a/scripts/remove b/scripts/remove
index 1f156c3..5e630a4 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -51,8 +51,8 @@ ynh_psql_remove_db --db_user=$db_user --db_name=$db_name
 ##=================================================
 ## REMOVE REDIS DB
 ##=================================================
-#
-#ynh_redis_remove_db
+
+ynh_redis_remove_db
 
 #=================================================
 # REMOVE DEPENDENCIES
diff --git a/scripts/restore b/scripts/restore
index 27da747..d1a21aa 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -68,8 +68,8 @@ ynh_system_user_create --username=$app --home_dir="$final_path" --use_shell
 #=================================================
 
 # Restore permissions on app files
-chown -R "$app": "$public_path"
-chown -R "$app": "$final_path"
+chown -R "$app" "$public_path"
+chown -R "$app" "$final_path"
 
 #=================================================
 # SPECIFIC RESTORATION
diff --git a/scripts/upgrade b/scripts/upgrade
index 0ed260d..8c27a58 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,10 +1,9 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
+
 source _common.sh
 source /usr/share/yunohost/helpers
 
@@ -13,18 +12,17 @@ source /usr/share/yunohost/helpers
 #=================================================
 ynh_script_progression --message="Loading installation settings..."
 
+domain=$(ynh_app_setting_get --app="$app" --key=domain)
 path_url=$(ynh_app_setting_get --app="$app" --key=path)
+admin=$(ynh_app_setting_get --app="$app" --key=admin)
 is_public=$(ynh_app_setting_get --app="$app" --key=is_public)
 public_path=$(ynh_app_setting_get --app="$app" --key=public_path)
 final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
-db_name=$(ynh_app_setting_get --app="$app" --key=db_name)
-db_user=$db_name
-domain=$(ynh_app_setting_get --app="$app" --key=domain)
+log_path=$(ynh_app_setting_get --app="$app" --key=log_path)
+
 db_pwd=$(ynh_app_setting_get --app="$app" --key=psqlpwd)
-admin=$(ynh_app_setting_get --app="$app" --key=admin)
 admin_mail=$(ynh_user_get_info "$admin" mail)
-key=$(ynh_string_random 50)
-#redis_db=$(ynh_app_setting_get --app="$app" --key=redis_db)
+redis_db=$(ynh_app_setting_get --app="$app" --key=redis_db)
 
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
@@ -40,25 +38,6 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-ynh_script_progression --message="Ensuring downward compatibility..."
-
-# Fix is_public as a boolean value
-if [ "$is_public" = "Yes" ]; then
-	ynh_app_setting_set --app=$app --key=is_public --value=1
-	is_public=1
-elif [ "$is_public" = "No" ]; then
-	ynh_app_setting_set --app=$app --key=is_public --value=0
-	is_public=0
-fi
-
-if [[ -d "$final_path/bin/" ]]
-then
-	ynh_secure_remove --file="$final_path/bin/"
-fi
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
@@ -74,7 +53,8 @@ ynh_systemd_action --service_name="$app" --action="stop"
 ynh_script_progression --message="Upgrading nginx web server configuration..."
 
 # Create a dedicated nginx config
-ynh_add_nginx_config
+# https://github.com/YunoHost/yunohost/blob/dev/data/helpers.d/nginx
+ynh_add_nginx_config "public_path" "port"
 
 #=================================================
 # SPECIFIC UPGRADE
@@ -104,94 +84,84 @@ ynh_add_systemd_config --service="$app" --template="pyinventory.service"
 # UPGRADE PYINVENTORY
 #=================================================
 
-upgrade() {
-	new_version=$1
-	settings_template=$2
-	#=================================================
-	# PIP INSTALLATION
-	#=================================================
-	ynh_script_progression --message="Install pyinventory using PIP..." --weight=15
+ynh_script_progression --message="Install pyinventory using PIP..." --weight=15
 
-	virtualenv --python=python3 "${final_path}/venv"
-	chown -R "$app": "$final_path/venv"
+virtualenv --python=python3 "${final_path}/venv"
+sudo chown -R "$app" "$final_path"
 
-	#run source in a 'sub shell'
-	(
-		set +o nounset
-		source "${final_path}/venv/bin/activate"
-		set -o nounset
-		sudo -u $app $final_path/venv/bin/pip install --upgrade pip
-		sudo -u $app $final_path/venv/bin/pip install --upgrade setuptools wheel psycopg2-binary
-		sudo -u $app $final_path/venv/bin/pip install --upgrade pyinventory=="$new_version"
-	)
+#run source in a 'sub shell'
+(
+  set +o nounset
+  source "${final_path}/venv/bin/activate"
+  set -o nounset
+  sudo -u $app $final_path/venv/bin/pip install --upgrade pip
+  sudo -u $app $final_path/venv/bin/pip install --upgrade setuptools wheel psycopg2-binary
+  sudo -u $app $final_path/venv/bin/pip install --upgrade pyinventory=="$pyinventory_version"
+)
 
-	#=================================================
-	# MODIFY A CONFIG FILE
-	#=================================================
-	ynh_script_progression --message="Create pyinventory configuration file..."
+#=================================================
+# copy config files
+# ================================================
+ynh_script_progression --message="Create pyinventory configuration file..."
 
-  ynh_backup_if_checksum_is_different --file="$final_path/wsgi.py"
-  cp ../conf/wsgi.py "$final_path/wsgi.py"
+gunicorn_conf="$final_path/gunicorn.conf.py"
+ynh_backup_if_checksum_is_different --file="$gunicorn_conf"
+cp "../conf/gunicorn.conf.py" "$gunicorn_conf"
+ynh_replace_string --match_string="__FINAL_HOME_PATH__" --replace_string="$final_path" --target_file="$gunicorn_conf"
+ynh_replace_string --match_string="__LOG_FILE__" --replace_string="$log_file" --target_file="$gunicorn_conf"
+ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$gunicorn_conf"
+ynh_store_file_checksum --file="$gunicorn_conf"
 
-  ynh_backup_if_checksum_is_different --file="$final_path/manage.py"
-  cp ../conf/wsgi.py "$final_path/manage.py"
-  chmod +x "$final_path/manage.py"
+ynh_backup_if_checksum_is_different --file="$final_path/manage.py"
+cp ../conf/manage.py "$final_path/manage.py"
+chmod +x "$final_path/manage.py"
 
-	# save old settings file
-  settings="$final_path/ynh_pyinventory_settings.py"
+ynh_backup_if_checksum_is_different --file="$final_path/wsgi.py"
+cp ../conf/wsgi.py "$final_path/wsgi.py"
 
-	ynh_backup_if_checksum_is_different --file="$settings"
-	cp "$settings_template" "$settings"
+# save old settings file
+settings="$final_path/ynh_pyinventory_settings.py"
+ynh_backup_if_checksum_is_different --file="$settings"
 
-	ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$settings"
-	ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$settings"
-	ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$settings"
-	ynh_replace_string --match_string="__ADMINMAIL__" --replace_string="$admin_mail" --target_file="$settings"
-	ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$settings"
-	ynh_replace_string --match_string="__KEY__" --replace_string="$key" --target_file="$settings"
-	ynh_replace_string --match_string="__FINAL_HOME_PATH__" --replace_string="$final_path" --target_file="$settings"
-  ynh_replace_string --match_string="__FINAL_WWW_PATH__" --replace_string="$public_path" --target_file="$settings"
-	ynh_replace_string --match_string="__PYTHON_VERSION__" --replace_string="$python_version" --target_file="$settings"
+cp "../conf/ynh_pyinventory_settings.py" "$settings"
 
-	# remove last "/" of $path_url
-	ynh_replace_string --match_string="__PATHURL__" --replace_string="${path_url%/}" --target_file="$settings"
+ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$settings"
+ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$settings"
+ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$settings"
+ynh_replace_string --match_string="__ADMINMAIL__" --replace_string="$admin_mail" --target_file="$settings"
+ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$settings"
+ynh_replace_string --match_string="__FINAL_HOME_PATH__" --replace_string="$final_path" --target_file="$settings"
+ynh_replace_string --match_string="__FINAL_WWW_PATH__" --replace_string="$public_path" --target_file="$settings"
+ynh_replace_string --match_string="__LOG_FILE__" --replace_string="$log_file" --target_file="$settings"
+ynh_replace_string --match_string="__REDIS_DB__" --replace_string="$redis_db" --target_file="$settings"
 
-	# Recalculate and store the config file checksum into the app settings
-	ynh_store_file_checksum --file="$settings"
+# Recalculate and store the config file checksum into the app settings
+ynh_store_file_checksum --file="$settings"
 
-	touch "$final_path/local_settings.py"
+touch "$final_path/local_settings.py"
 
-	#=================================================
-	# MIGRATE PYINVENTORY
-	#=================================================
-	ynh_script_progression --message="Run migration scripts..." --weight=10
+#=================================================
+# MIGRATE PYINVENTORY
+#=================================================
+ynh_script_progression --message="migrate/collectstatic/createadmin..." --weight=10
 
-	(
-		set +o nounset
-		source "${final_path}/venv/bin/activate"
-		set -o nounset
-		cd "${final_path}"
+(
+	set +o nounset
+	source "${final_path}/venv/bin/activate"
+	set -o nounset
+	cd "${final_path}"
 
-		./manage.py migrate --noinput
-		./manage.py collectstatic --noinput
-		
-		# Check the configuration
-		# This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
-		if [ "$new_version" == "$pyinventory_version" ]; then
-			./manage.py check --deploy || true
-		fi
-	)
-}
+  # Just for debugging:
+  ./manage.py diffsettings
 
-file_version="${final_path}/venv/lib/python$python_version/site-packages/pyinventory/__init__.py"
-if [ -e $file_version ]
-then
-	current_version=$(cat $file_version | grep "^VERSION = " | grep -o "[0-9].[0-9]" | head -n1 | cut -d"." -f1)
-else
-	current_version=3
-fi
+	./manage.py migrate --no-input
+	./manage.py collectstatic --no-input
+	echo "from django.contrib.auth import get_user_model; get_user_model().objects.create_superuser('$admin', '$admin_mail', 'pyinventory')" | ./manage.py shell
 
-upgrade $pyinventory_version "../conf/ynh_pyinventory_settings.py"
+	# Check the configuration
+	# This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
+	./manage.py check --deploy || true
+)
 
 #=================================================
 # SETUP LOGROTATE
@@ -206,7 +176,7 @@ ynh_use_logrotate --non-append
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..."
 
-yunohost service add "$app" --log "/var/log/$app/pyinventory.log"
+yunohost service add "$app" --log "${log_file}"
 
 #=================================================
 # GENERIC FINALIZATION
@@ -214,15 +184,10 @@ yunohost service add "$app" --log "/var/log/$app/pyinventory.log"
 # SECURE FILES AND DIRECTORIES
 #=================================================
 
-# Set right permissions for curl installation
-chown -R "$app": "$final_path"
-
-#=================================================
-# START SYSTEMD SERVICES
-#=================================================
-ynh_script_progression --message="Starting systemd services..." --weight=5
-
-ynh_systemd_action --service_name="$app" --action="start"
+# Set permissions to app files
+sudo chown -R "$app" "$log_path"
+sudo chown -R "$app" "$public_path"
+sudo chown -R "$app" "$final_path"
 
 #=================================================
 # SETUP SSOWAT
@@ -236,6 +201,13 @@ then
 	ynh_app_setting_set --app="$app" --key=unprotected_uris --value="/"
 fi
 
+#=================================================
+# Start pyinventory via systemd
+#=================================================
+ynh_script_progression --message="Starting PyInventory's services..." --weight=5
+
+ynh_systemd_action --service_name="$app" --action="start"
+
 #=================================================
 # RELOAD NGINX
 #=================================================