packaging: fixed issue with pid file on systemd systems, fixes #9133

packaging/deb/control/postinst

@@ -6,6 +6,7 @@ set -e
 
 IS_UPGRADE=false
 
+
 case "$1" in
 	configure)
 	[ -z "$GRAFANA_USER" ] && GRAFANA_USER="grafana"
@@ -41,6 +42,12 @@ case "$1" in
     IS_UPGRADE=true
   fi
 
+  # make sure there is a /var/run/grafana dir on systemd systems
+  if [ -x /bin/systemctl ] ; then
+    mkdir -p $PID_FILE_DIR
+    chown -R $GRAFANA_USER:$GRAFANA_GROUP $PID_FILE_DIR
+  fi
+
   if [ "x$IS_UPGRADE" != "xtrue" ]; then
     if command -v systemctl >/dev/null; then
       echo "### NOT starting on installation, please execute the following statements to configure grafana to start automatically using systemd"