🟡 Namada: complex node monitoring and alerting

A bash script that monitors the status of a Namada node and notifies via Telegram if issues are detected or actions are taken.

Overview

This script checks the status of a Namada node, comparing its block height with a peer node and automatically taking actions (like restarting the node service) if necessary. It sends notifications through Telegram if enabled.

Features

• Monitors local node status and compares block height with RPC.
• Automatically restarts the node service if it becomes unresponsive or significantly lags behind the peer.
• Sends notifications via Telegram.
• Configurable parameters for node details, Telegram API integration, and monitoring thresholds.

Configuration

Before running the script, configure the following parameters:

• NODE_RPC_URL: URL of the local node's RPC interface.

• TELEGRAM_NOTIFY_ENABLED: Enable/disable Telegram notifications.

• TG_CHAT_ID and TG_BOT_KEY: Telegram chat ID and bot key for notifications.

• NODE_ID: Identifier for the node being monitored.

• ALERT_DIFFERENCE: Block height difference threshold for triggering alerts.

• NODE_RESTART_ENABLED: Toggle for automatically restarting the node.

• CHECK_INTERVAL: Time interval (in seconds) between checks.

• PEER_RPC_URL: URL of the peer node's RPC interface.

• MAX_UNSEEN_BLOCKS: Threshold for missed block alerts.

Installation

1. Copy the script to your server where node is running.

2. Make the script executable:

chmod +x node_monitor.sh

3. Edit the script to configure the necessary parameters as per your setup.

nano node_monitor.sh

Usage

Run the script in the background or as a service:

./node_monitor.sh &

Dependencies

• curl: For making HTTP requests to the node's RPC interface.
• jq: For parsing JSON data from RPC responses.

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Made with ❤️ by RoobCat.