diff --git a/conf/systemd.service b/conf/systemd.service
index 7d7683d..f7517e1 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -5,7 +5,7 @@ Requires=network.target
 After=network.target
 
 [Service]
-Type=forking
+Type=simple
 User=www-data
 RemainAfterExit=yes
 Restart=always
diff --git a/manifest.json b/manifest.json
index b0ca202..9e6a229 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,9 +2,9 @@
 	"name": "Lstu",
 	"id": "lstu",
 	"packaging_format": 1,
-	"version": "0.21-4~ynh1",
+	"version": "0.21-4~ynh2",
 	"requirements": {
-		"yunohost": ">= 2.4"
+		"yunohost": ">= 3.0"
 	},
 	"description": {
 		"en": "URL Shortener",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index a6b1ce9..423ac1d 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,3 +5,93 @@ CHECK_VAR () {	# Verifies that the variable is not empty.
 	# $2 = Display text on error
 	test -n "$1" || (echo "$2" >&2 && false)
 }
+
+
+# Start (or other actions) a service,  print a log in case of failure and optionnaly wait until the service is completely started
+#
+# usage: ynh_systemd_action [-n service_name] [-a action] [ [-l "line to match"] [-p log_path] [-t timeout] [-e length] ]
+# | arg: -n, --service_name= - Name of the service to reload. Default : $app
+# | arg: -a, --action=       - Action to perform with systemctl. Default: start
+# | arg: -l, --line_match=   - Line to match - The line to find in the log to attest the service have finished to boot.
+#                              If not defined it don't wait until the service is completely started.
+# | arg: -p, --log_path=     - Log file - Path to the log file. Default : /var/log/$app/$app.log
+# | arg: -t, --timeout=      - Timeout - The maximum time to wait before ending the watching. Default : 300 seconds.
+# | arg: -e, --length=       - Length of the error log : Default : 20
+ynh_systemd_action() {
+    # Declare an array to define the options of this helper.
+    declare -Ar args_array=( [n]=service_name= [a]=action= [l]=line_match= [p]=log_path= [t]=timeout= [e]=length= )
+    local service_name
+    local action
+    local line_match
+    local length
+    local log_path
+    local timeout
+
+    # Manage arguments with getopts
+    ynh_handle_getopts_args "$@"
+
+    local service_name="${service_name:-$app}"
+    local action=${action:-start}
+    local log_path="${log_path:-/var/log/$service_name/$service_name.log}"
+    local length=${length:-20}
+    local timeout=${timeout:-300}
+
+    # Start to read the log
+    if [[ -n "${line_match:-}" ]]
+    then
+        local templog="$(mktemp)"
+	# Following the starting of the app in its log
+	if [ "$log_path" == "systemd" ] ; then
+            # Read the systemd journal
+            journalctl -u $service_name -f --since=-45 > "$templog" &
+	else
+            # Read the specified log file
+            tail -F -n0 "$log_path" > "$templog" &
+	fi
+        # Get the PID of the tail command
+        local pid_tail=$!
+    fi
+
+    echo "${action^} the service $service_name" >&2
+    systemctl $action $service_name \
+        || ( journalctl --lines=$length -u $service_name >&2 \
+        ; test -n "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2 \
+        ; false )
+
+    # Start the timeout and try to find line_match
+    if [[ -n "${line_match:-}" ]]
+    then
+        local i=0
+        for i in $(seq 1 $timeout)
+        do
+            # Read the log until the sentence is found, that means the app finished to start. Or run until the timeout
+            if grep --quiet "$line_match" "$templog"
+            then
+                echo "The service $service_name has correctly started." >&2
+                break
+            fi
+            echo -n "." >&2
+            sleep 1
+        done
+        if [ $i -eq $timeout ]
+        then
+            echo "The service $service_name didn't fully started before the timeout." >&2
+            echo "Please find here an extract of the end of the log of the service $service_name:"
+            journalctl --lines=$length -u $service_name >&2
+            test -n "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2
+        fi
+
+        echo ""
+        ynh_clean_check_starting
+    fi
+}
+
+# Clean temporary process and file used by ynh_check_starting
+# (usually used in ynh_clean_setup scripts)
+#
+# usage: ynh_clean_check_starting
+ynh_clean_check_starting () {
+	# Stop the execution of tail.
+	kill -s 15 $pid_tail 2>&1
+	ynh_secure_remove "$templog" 2>&1
+}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 832deac..9a54996 100644
--- a/scripts/install
+++ b/scripts/install
@@ -101,8 +101,6 @@ ynh_setup_source "$final_path"
 # NGINX CONFIGURATION
 #=================================================
 
-### `ynh_add_nginx_config` will use the file conf/nginx.conf
-
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
@@ -126,6 +124,7 @@ ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lstu.conf"
 ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lstu.conf"
 
 secret=$(ynh_string_random 24)
+ynh_app_setting_set $app secret $secret
 ynh_replace_string "__SECRET__" "$secret" "${final_path}/lstu.conf"
 ynh_store_file_checksum "${final_path}/lstu.conf"
 
@@ -184,11 +183,11 @@ sudo chown -R www-data $final_path
 #=================================================
 
 systemctl enable $app.service
-systemctl start $app
+ynh_systemd_action -n $app -a start -l "Server available at" -p "systemd"
 
 #=================================================
 # RELOAD NGINX
 #=================================================
 
 # Reload Nginx
-sudo service nginx reload
+systemctl reload nginx
diff --git a/scripts/restore b/scripts/restore
index 02f5892..f444bdc 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -42,6 +42,13 @@ test ! -d $final_path \
 
 #=================================================
 # STANDARD RESTORATION STEPS
+#=================================================
+# REINSTALL DEPENDENCIES
+#=================================================
+
+# Define and install dependencies
+ynh_install_app_dependencies build-essential libssl-dev zlib1g-dev libpng-dev libpq-dev memcached postgresql
+
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
@@ -59,25 +66,19 @@ ynh_restore_file "$final_path"
 #=================================================
 
 db_pwd=$(ynh_app_setting_get $app psqlpwd)
+ynh_psql_test_if_first_run
 ynh_psql_setup_db $db_name $db_name $db_pwd
 ynh_psql_connect_as $db_name $db_pwd $db_name < ./db.sql
 
 #=================================================
 # SPECIFIC RESTORATION
-#=================================================
-# REINSTALL DEPENDENCIES
-#=================================================
-
-# Define and install dependencies
-ynh_install_app_dependencies build-essential libssl-dev zlib1g-dev libpng-dev libpq-dev memcached postgresql
-
 #=================================================
 # RESTORE SYSTEMD
 #=================================================
 
 ynh_restore_file "/etc/systemd/system/$app.service"
 systemctl enable $app.service
-systemctl start $app
+ynh_systemd_action -n $app -a start -l "Server available at" -p "systemd"
 
 #=================================================
 # ADVERTISE SERVICE IN ADMIN PANEL
diff --git a/scripts/upgrade b/scripts/upgrade
index 63c311c..04c96c8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -53,6 +53,21 @@ then	# Si final_path n'est pas renseigné dans la config yunohost, cas d'ancien
 	final_path=/var/www/$app
 fi
 
+if [ -z "$db_pwd" ]; then
+	db_pwd=$(ynh_app_setting_get $app db_pwd)	# Fix old db_pwd
+	if [ -z "$db_pwd" ]; then
+		db_name=$(ynh_sanitize_dbid "$app")
+		db_user=$db_name
+		# Initialize database and store postgres password for upgrade
+		ynh_psql_setup_db "$db_name" "$db_user"
+		ynh_app_setting_set "$app" db_name "$db_name"
+		db_pwd=$(ynh_app_setting_get $app psqlpwd) # Password created in ynh_psql_setup_db function
+	else
+		ynh_app_setting_delete $app db_pwd
+		ynh_app_setting_set $app psqlpwd $db_pwd
+	fi
+fi
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -83,7 +98,6 @@ ynh_replace_string "__DB_NAME__" "$db_name"  "${final_path}/lstu.conf"
 ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lstu.conf"
 ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lstu.conf"
 
-secret=$(ynh_string_random 24)
 ynh_replace_string "__SECRET__" "$secret" "${final_path}/lstu.conf"
 ynh_store_file_checksum "${final_path}/lstu.conf"
 
@@ -125,7 +139,7 @@ yunohost service add $app --log "/var/log/$app.log"
 # RESTART LSTU
 #=================================================
 
-systemctl reload $app
+ynh_systemd_action -n $app -a reload -l "Starting hot deployment for Hypnotoad server" -p "systemd"
 
 #=================================================
 # SETUP SSOWAT