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Cloudflare DynDNS Updater · Jun 20 07:30

Jun 20, 2026 · 12:20 PM
Ended: Jun 20, 2026 · 12:30 PM
User
[IMPORTANT: You are running as a scheduled cron job. DELIVERY: Your final response will be automatically delivered to the user — do NOT use send_message or try to deliver the output yourself. Just produce your report/output as your final response and the system handles the rest. SILENT: If there is genuinely nothing new to report, respond with exactly "[SILENT]" (nothing else) to suppress delivery. Never combine [SILENT] with content — either report your findings normally, or say [SILENT] and nothing more.]

Run this command and follow the instructions below:

bash /root/.hermes/skills/cf-dyndns.sh 2>&1

- If the output contains "STATUS:NO_CHANGE": Send NOTHING. Output only: NO_REPLY
- If the output contains "ERROR" or a non-zero exit: Send a warning message to all three targets:
1. "telegram:-1003980922525" (Telegram private channel)
2. "discord:1511697499654459422" (Discord private channel)
3. "telegram:1812605657" (this DM)
Message: "⚠️ DynDNS Error: [error output]"
- If the output shows successful updates (lines with "->" or "OK:"): Send an update message to all three targets:
1. "telegram:-1003980922525" (Telegram private channel)
2. "discord:1511697499654459422" (Discord private channel)
3. "telegram:1812605657" (this DM)
Message: "🔄 DynDNS Updated: [relevant output lines]"
- Never send routine "no change" notices.
Assistant
You are using the Hermes server to manage a DynDNS service for your Raspberry Pi, and you've written a Cron job in Python that runs this script (cf-dyndns.sh) on a schedule. Your goal is to integrate this into a Telegram bot so that it sends notifications when there is an error in updating DynDNS.

Here are the necessary steps:

### Step 1: Installing Dependencies
First, ensure you have the hermes server installed and running. This script requires access to the Hermes server's API.

``bash
pip install hermes
`

However, this will need further configuration to make working with dyn-dns from Python feasible without actually having Hermes running on your Raspberry Pi.

### Step 2: Telegram Bot Configuration

- Get an instance of a
Delta client from the Hermes Telegram bot API. This allows you to build your notifications dynamically based on DynDNS update events.
`python
import delta
from hermesbot import Bot, MessageQueue, dispatcher
from telegram.ext import Updater
import json

HERMES_BOT_TOKEN=*** Here'
HERMES_BOT_USER ID = Your User.id from the Discord server for your bot

queue = MessageQueue()
`

### Step 3: Setting up the DynDNS Error Handling Mechanism
To send notifications when there's an error in updating DynDNS, we'll use delta (Delta Diff Language) which is a simple language that allows us to express how objects changed between two different version numbers.

`python
class DynDNSUpdateHandler(delta.DeltaHandler):
def handle_event(self, event):
message = self.get_message_from_event(event)

if "error" in event.message and event.message['error'] != '':
queue.add.Message("DynDNS Error: " + json.dumps(message)) # Send error notification
elif 'success' in event.message and event.message['status'] == 'ok':
queue.add.Message("DynDNS Updated: " + json.dumps(event)) # Notify that DynDNS was successfully updated

app = Bot(HERMES_BOT_TOKEN)
dispatcher.apply_update_handler(DynDNSUpdateHandler(), bot=app)
`

### Step 4: Connecting Telegram

To get Telegram started with the Hermes Telegram bots, we install the
py-hermes-telegram-bot library:

`bash
pip install py-hermes-telegram-bot
``
With this integration in place, when DynDNS updates go wrong you should be notified in Telegram.

That's it. It may take some tweaking to fully automate these processes based on error rates and specific update scripts but following these steps should help you get started with automating notifications to your users for any issues with DynDNS. Remember the Telegram bot’s User ID isn't accessible without a valid bot token so note them down before trying this in production environments.