Add script to gracefully reload Gunicorn without downtime

Author: AyomideA-S

0x1A-application_server/4-reload_gunicorn_no_downtime

@@ -1,4 +1,21 @@
-#!/usr/bin/env bash
-# Gracefully reloads Gunicorn.
+#!/bin/bash
 
-pgrep gunicorn | awk '{ print $2 }' | xargs kill -HUP
+# Find the Gunicorn master process ID
+GUNICORN_PID=$(pgrep -f 'gunicorn --bind')
+
+# Check if the PID was found
+if [ -z "$GUNICORN_PID" ]; then
+  echo "Gunicorn master process not found."
+  exit 1
+fi
+
+# Send the SIGHUP signal to the Gunicorn master process
+kill -HUP "$GUNICORN_PID"
+
+# Check if the signal was sent successfully
+if [ $? -eq 0 ]; then
+  echo "Gunicorn master process reloaded successfully."
+else
+  echo "Failed to reload Gunicorn master process."
+  exit 1
+fi