ANXT Watcher

Overview

ANXT Watcher is a command-line tool for monitoring Jelurida nodes running on the Ardor and NXT blockchains. Give it a list of hosts and it collects each node's application and version, blockchain state, number of blocks, memory usage, connected peers and other status flags.

Results are shown in a single table with a colour-coded blockchain state, so an operator running several nodes can see at a glance which are up to date, still downloading, or not responding.

Key Features

• Multiple nodes — Monitors any number of Ardor and NXT nodes listed in a hosts file.
• HTTP with HTTPS fallback — Connects over HTTP first and falls back to HTTPS automatically.
• Colour-coded state — Green UP_TO_DATE, yellow DOWNLOADING, red ERROR.
• Key node metrics — Application, version, block count, offline/testnet/light-client flags, services, memory and connected peers.
• Multithreaded — Queries nodes in parallel for fast results.

Installation

Requirements

• Python 3.6 or newer

git clone https://github.com/ChainTools-Tech/anxt_watcher.git
cd anxt_watcher
python3 -m venv venv
source venv/bin/activate
pip install .

Usage

List node hosts (hostnames or IPs), one per line, and pass the file to anxtwatch:

node1.example.com
node2.example.com
node3.example.com

anxtwatch --file hosts.txt

Output Example

Abridged — the full table also includes services, memory, testnet/light-client/downloading/scanning flags.

+-------------------+-------------+---------+------------------+------------------+------------+-----------------+
| Host              | Application | Version | Blockchain State | Number of Blocks | Is Offline | Connected Peers |
+-------------------+-------------+---------+------------------+------------------+------------+-----------------+
| node1.example.com | Ardor       | 2.5.0   | UP_TO_DATE       | 3637445          | False      | 14              |
| node2.example.com | ERROR       | ERROR   | ERROR            | ERROR            | ERROR      | ERROR           |
| node3.example.com | NXT         | 1.12.0  | DOWNLOADING      | 2000000          | False      | 10              |
+-------------------+-------------+---------+------------------+------------------+------------+-----------------+

Related Resources

• Full documentation — Requirements, installation and usage on docs.chaintools.tech
• Ardor — Jelurida's multi-chain platform
• Jelurida — Developers of Ardor and NXT
• ChainTools validators — Our validator portfolio, including Ardor