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#!/bin/bash
echo "[/] sleeping to wait for some time for container to be marked as stop."
# https://stackoverflow.com/a/45146086
sleep 3
pid_file="/run/nginx.pid"
max_wait_seconds=30
if [ ! -f "$pid_file" ]; then
echo "[!] Nginx PID file not found at $pid_file. Assuming Nginx not running or already stopped."
exit 0
fi
PID=$(cat "$pid_file")
# Validate PID
if [ -z "$PID" ] || ! [[ "$PID" =~ ^[0-9]+$ ]]; then
echo "[!] Invalid PID found in $pid_file: '$PID'"
exit 1
fi
# Check if the process actually exists before sending quit
# kill -0 PID checks if a signal can be sent.
if ! kill -0 "$PID" 2>/dev/null; then
echo "[!] Nginx process $PID not found or already stopped."
exit 0 # Exit successfully
fi
echo "[/] sending signal to nginx (PID: $PID) to quit"
nginx -s quit
start_time=$SECONDS
echo "[/] Waiting for Nginx (PID: $PID) to stop (max ${max_wait_seconds}s)..."
while [ -d /proc/$PID ]; do
current_time=$SECONDS
elapsed_time=$((current_time - start_time))
if [ "$elapsed_time" -ge "$max_wait_seconds" ]; then
echo "[!] Timeout: Nginx process $PID did not stop within ${max_wait_seconds} seconds."
echo "[!] Sending SIGKILL to PID $PID."
kill -9 "$PID" 2>/dev/null
exit 1
fi
sleep 0.5
if (( $(echo "$elapsed_time % 5" | bc) == 0 )); then
echo "[/] Nginx (PID: $PID) still running (waited ${elapsed_time}s)..."
fi
done
echo "[+] Nginx process $PID stopped gracefully."
echo "[+] done. goodbye."
exit 0
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