Add ddns-cloudflare/README.md

ddns-cloudflare/README.md

@@ -0,0 +1,65 @@
+## `docker-compose.yml`
+```yml
+services:
+  ddns:
+    environment:
+      - API_TOKEN=
+      - ZONE_ID=
+      - RECORD_ID=
+      - DOMAIN_NAME=
+    image: python:slim
+    restart: unless-stopped
+    container_name: ddns
+    entrypoint: python -c
+    command:
+      - |
+        import subprocess
+        subprocess.run('pip install requests', shell=True, capture_output=True)
+        import json, time, requests, os
+
+        def get_current_ip():
+            return requests.get('https://api64.ipify.org').text
+
+        def update_dns(ip):
+            zone_id = os.environ['ZONE_ID']
+            record_id = os.environ['RECORD_ID']
+            api_token = os.environ['API_TOKEN']
+            domain_name = os.environ['DOMAIN_NAME']
+
+            url = f"https://api.cloudflare.com/client/v4/zones/{zone_id}/dns_records/{record_id}"
+            headers = { 
+                'Authorization': f'Bearer {api_token}'
+            }
+
+            data = {
+                'type': 'A',
+                'name': domain_name,
+                'content': ip,
+                'ttl': 1,
+                'proxied': False
+            }
+
+            response = requests.put(url, headers=headers, json=data)
+
+            if response.status_code == 200:
+                print(f"DNS 레코드가 성공적으로 업데이트되었습니다. 새 IP: {ip}", flush=True)
+            else:
+                print("DNS 레코드 업데이트에 실패했습니다.", flush=True)
+                print(response.text, flush=True)
+
+        subprocess.run('pip install requests', shell=True, capture_output=True)
+
+        last_ip = None
+        check_interval = 6 * 3600  # 6시간
+
+        while True:
+            current_ip = get_current_ip()
+            if current_ip != last_ip:
+                print(f"IP 변경 감지: {last_ip} -> {current_ip}", flush=True)
+                update_dns(current_ip)
+                last_ip = current_ip
+            else:
+                print(f"IP 변경 없음: {current_ip}", flush=True)
+
+            time.sleep(check_interval)
+```