Initial commit: Chrony NTP Server add-on for Home Assistant
- NTP client syncs from configurable pools and servers - NTP server mode serves time to LAN clients - Web UI dashboard showing sync status, sources, and clients - Supports iburst and maxsources options Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Adam Harrison-Fuller
@@ -0,0 +1,77 @@
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#!/command/with-contenv bash
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# Generate chrony configuration from add-on options
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CONFIG_FILE="/etc/chrony/chrony.conf"
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OPTIONS_FILE="/data/options.json"
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echo "[INFO] Generating Chrony configuration..."
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# Create config directory
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mkdir -p /etc/chrony /var/lib/chrony /var/log/chrony
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# Start with base config
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cat > "$CONFIG_FILE" << 'EOF'
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# Chrony configuration - generated by Home Assistant add-on
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driftfile /var/lib/chrony/chrony.drift
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makestep 1.0 3
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rtcsync
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logdir /var/log/chrony
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EOF
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# Parse options.json with jq
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if [ -f "$OPTIONS_FILE" ]; then
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# Add NTP pools
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pool_count=$(jq '.ntp_pools | length' "$OPTIONS_FILE")
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for i in $(seq 0 $((pool_count - 1))); do
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pool_addr=$(jq -r ".ntp_pools[$i].pool" "$OPTIONS_FILE")
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iburst=$(jq -r ".ntp_pools[$i].iburst" "$OPTIONS_FILE")
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maxsources=$(jq -r ".ntp_pools[$i].maxsources" "$OPTIONS_FILE")
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pool_line="pool ${pool_addr}"
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[ "$iburst" = "true" ] && pool_line="${pool_line} iburst"
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[ "$maxsources" != "null" ] && pool_line="${pool_line} maxsources ${maxsources}"
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echo "$pool_line" >> "$CONFIG_FILE"
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echo "[INFO] Added NTP pool: ${pool_addr}"
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done
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# Add NTP servers
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server_count=$(jq '.ntp_servers | length' "$OPTIONS_FILE")
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for i in $(seq 0 $((server_count - 1))); do
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server_addr=$(jq -r ".ntp_servers[$i].server" "$OPTIONS_FILE")
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iburst=$(jq -r ".ntp_servers[$i].iburst" "$OPTIONS_FILE")
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if [ "$iburst" = "true" ]; then
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echo "server ${server_addr} iburst" >> "$CONFIG_FILE"
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else
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echo "server ${server_addr}" >> "$CONFIG_FILE"
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fi
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echo "[INFO] Added NTP server: ${server_addr}"
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done
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# Configure as NTP server if enabled
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enable_server=$(jq -r '.enable_ntp_server' "$OPTIONS_FILE")
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if [ "$enable_server" = "true" ]; then
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echo "[INFO] NTP server mode enabled"
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# Add allowed client networks
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for network in $(jq -r '.allow_clients[]' "$OPTIONS_FILE"); do
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echo "allow ${network}" >> "$CONFIG_FILE"
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echo "[INFO] Allowing clients from: ${network}"
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done
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fi
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# Set logging
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detailed_logging=$(jq -r '.detailed_logging' "$OPTIONS_FILE")
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if [ "$detailed_logging" = "true" ]; then
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echo "log tracking measurements statistics" >> "$CONFIG_FILE"
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echo "[INFO] Detailed logging enabled"
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else
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echo "log tracking" >> "$CONFIG_FILE"
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fi
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fi
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echo "[INFO] Chrony configuration generated successfully"
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# Start chrony in foreground
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exec chronyd -d -f "$CONFIG_FILE"
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@@ -0,0 +1 @@
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longrun
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@@ -0,0 +1,4 @@
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#!/command/with-contenv bash
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cd /var/www
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exec python3 /var/www/app.py
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@@ -0,0 +1 @@
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longrun
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@@ -0,0 +1,169 @@
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#!/usr/bin/env python3
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"""Chrony NTP Server Web UI for Home Assistant."""
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import json
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import os
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import subprocess
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from flask import Flask, render_template, jsonify
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app = Flask(__name__)
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OPTIONS_FILE = "/data/options.json"
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def get_options():
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"""Load current options from Home Assistant."""
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try:
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with open(OPTIONS_FILE, 'r') as f:
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return json.load(f)
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except (FileNotFoundError, json.JSONDecodeError):
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return {
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"ntp_pools": [
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{"pool": "pool.ntp.org", "iburst": True}
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],
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"ntp_servers": [
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{"server": "time.google.com", "iburst": True}
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],
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"allow_clients": ["192.168.0.0/16", "10.0.0.0/8", "172.16.0.0/12"],
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"enable_ntp_server": True,
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"detailed_logging": False
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}
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def get_chrony_status():
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"""Get current chrony synchronization status."""
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status = {
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"tracking": {},
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"sources": [],
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"clients": []
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}
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try:
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# Get tracking info
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result = subprocess.run(
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["chronyc", "-c", "tracking"],
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capture_output=True, text=True, timeout=5
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)
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if result.returncode == 0:
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fields = result.stdout.strip().split(',')
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if len(fields) >= 14:
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status["tracking"] = {
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"reference_id": fields[0],
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"reference_name": fields[1],
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"stratum": fields[2],
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"ref_time": fields[3],
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"system_time": fields[4],
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"last_offset": fields[5],
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"rms_offset": fields[6],
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"frequency": fields[7],
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"residual_freq": fields[8],
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"skew": fields[9],
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"root_delay": fields[10],
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"root_dispersion": fields[11],
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"update_interval": fields[12],
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"leap_status": fields[13]
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}
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# Get sources
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result = subprocess.run(
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["chronyc", "-c", "sources"],
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capture_output=True, text=True, timeout=5
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)
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if result.returncode == 0:
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for line in result.stdout.strip().split('\n'):
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if line:
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fields = line.split(',')
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if len(fields) >= 10:
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status["sources"].append({
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"mode": fields[0],
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"state": fields[1],
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"name": fields[2],
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"stratum": fields[3],
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"poll": fields[4],
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"reach": fields[5],
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"last_rx": fields[6],
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"last_sample_offset": fields[7],
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"last_sample_error": fields[8]
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})
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# Get clients (if server mode enabled)
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result = subprocess.run(
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["chronyc", "-c", "clients"],
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capture_output=True, text=True, timeout=5
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)
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if result.returncode == 0:
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for line in result.stdout.strip().split('\n'):
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if line:
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fields = line.split(',')
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if len(fields) >= 5:
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status["clients"].append({
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"hostname": fields[0],
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"ntp_requests": fields[1],
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"drop": fields[2],
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"last_rx": fields[4]
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})
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except subprocess.TimeoutExpired:
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status["error"] = "Timeout getting chrony status"
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except Exception as e:
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status["error"] = str(e)
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return status
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@app.route('/')
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def index():
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"""Main dashboard page."""
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options = get_options()
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status = get_chrony_status()
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return render_template('index.html', options=options, status=status)
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@app.route('/api/status')
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def api_status():
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"""API endpoint for current status."""
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return jsonify(get_chrony_status())
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@app.route('/api/options')
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def api_options():
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"""API endpoint for current options."""
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return jsonify(get_options())
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@app.route('/api/force-sync', methods=['POST'])
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def force_sync():
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"""Force immediate time synchronization."""
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try:
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result = subprocess.run(
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["chronyc", "makestep"],
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capture_output=True, text=True, timeout=10
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)
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if result.returncode == 0:
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return jsonify({"success": True, "message": "Time step applied"})
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else:
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return jsonify({"success": False, "message": result.stderr}), 500
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except Exception as e:
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return jsonify({"success": False, "message": str(e)}), 500
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@app.route('/api/burst', methods=['POST'])
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def burst_sync():
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"""Trigger burst mode for faster synchronization."""
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try:
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result = subprocess.run(
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["chronyc", "burst", "4/4"],
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capture_output=True, text=True, timeout=10
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)
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if result.returncode == 0:
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return jsonify({"success": True, "message": "Burst mode activated"})
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else:
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return jsonify({"success": False, "message": result.stderr}), 500
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except Exception as e:
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return jsonify({"success": False, "message": str(e)}), 500
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if __name__ == '__main__':
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# Get ingress port from environment
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port = int(os.environ.get('INGRESS_PORT', 8099))
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app.run(host='0.0.0.0', port=port, debug=False)
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@@ -0,0 +1,477 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Chrony NTP Server</title>
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<style>
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:root {
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--primary-color: #03a9f4;
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--background-color: #1c1c1c;
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--card-background: #2c2c2c;
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--text-color: #e0e0e0;
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--text-secondary: #9e9e9e;
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--success-color: #4caf50;
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--warning-color: #ff9800;
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--error-color: #f44336;
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--border-color: #404040;
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}
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* {
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box-sizing: border-box;
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margin: 0;
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padding: 0;
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}
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
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background-color: var(--background-color);
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color: var(--text-color);
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line-height: 1.6;
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padding: 20px;
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}
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.container {
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max-width: 1200px;
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margin: 0 auto;
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}
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header {
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display: flex;
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justify-content: space-between;
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align-items: center;
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margin-bottom: 30px;
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padding-bottom: 20px;
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border-bottom: 1px solid var(--border-color);
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}
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h1 {
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font-size: 24px;
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font-weight: 500;
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display: flex;
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align-items: center;
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gap: 10px;
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}
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h1 .icon {
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font-size: 28px;
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}
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.status-badge {
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padding: 6px 12px;
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border-radius: 20px;
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font-size: 14px;
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font-weight: 500;
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}
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.status-synced {
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background-color: rgba(76, 175, 80, 0.2);
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color: var(--success-color);
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}
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.status-warning {
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background-color: rgba(255, 152, 0, 0.2);
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color: var(--warning-color);
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}
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.status-error {
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background-color: rgba(244, 67, 54, 0.2);
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color: var(--error-color);
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}
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.grid {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
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gap: 20px;
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margin-bottom: 20px;
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}
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.card {
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background-color: var(--card-background);
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border-radius: 12px;
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padding: 20px;
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border: 1px solid var(--border-color);
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}
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.card h2 {
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font-size: 16px;
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font-weight: 500;
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color: var(--text-secondary);
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margin-bottom: 15px;
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text-transform: uppercase;
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letter-spacing: 0.5px;
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}
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.stat-grid {
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display: grid;
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grid-template-columns: repeat(2, 1fr);
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gap: 15px;
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}
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.stat {
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padding: 10px 0;
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}
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.stat-label {
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font-size: 12px;
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color: var(--text-secondary);
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margin-bottom: 4px;
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}
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.stat-value {
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font-size: 18px;
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font-weight: 500;
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color: var(--text-color);
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}
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.stat-value.mono {
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font-family: 'SF Mono', Monaco, 'Courier New', monospace;
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}
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table {
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width: 100%;
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border-collapse: collapse;
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}
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th, td {
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text-align: left;
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padding: 12px 8px;
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border-bottom: 1px solid var(--border-color);
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}
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|
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th {
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font-size: 12px;
|
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color: var(--text-secondary);
|
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font-weight: 500;
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text-transform: uppercase;
|
||||
}
|
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|
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td {
|
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font-size: 14px;
|
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}
|
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.source-state {
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display: inline-block;
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width: 8px;
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height: 8px;
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border-radius: 50%;
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margin-right: 8px;
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}
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.source-state.synced { background-color: var(--success-color); }
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.source-state.combined { background-color: #8bc34a; }
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.source-state.candidate { background-color: var(--primary-color); }
|
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.source-state.unreachable { background-color: var(--text-secondary); }
|
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.source-state.falseticker { background-color: var(--error-color); }
|
||||
.source-state.variable { background-color: var(--warning-color); }
|
||||
|
||||
.button-group {
|
||||
display: flex;
|
||||
gap: 10px;
|
||||
margin-top: 15px;
|
||||
}
|
||||
|
||||
.btn {
|
||||
padding: 10px 20px;
|
||||
border: none;
|
||||
border-radius: 8px;
|
||||
font-size: 14px;
|
||||
font-weight: 500;
|
||||
cursor: pointer;
|
||||
transition: all 0.2s;
|
||||
}
|
||||
|
||||
.btn-primary {
|
||||
background-color: var(--primary-color);
|
||||
color: white;
|
||||
}
|
||||
|
||||
.btn-primary:hover {
|
||||
background-color: #0288d1;
|
||||
}
|
||||
|
||||
.btn-secondary {
|
||||
background-color: var(--border-color);
|
||||
color: var(--text-color);
|
||||
}
|
||||
|
||||
.btn-secondary:hover {
|
||||
background-color: #505050;
|
||||
}
|
||||
|
||||
.config-list {
|
||||
list-style: none;
|
||||
}
|
||||
|
||||
.config-list li {
|
||||
padding: 8px 0;
|
||||
border-bottom: 1px solid var(--border-color);
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
.config-list li:last-child {
|
||||
border-bottom: none;
|
||||
}
|
||||
|
||||
.tag {
|
||||
font-size: 12px;
|
||||
padding: 2px 8px;
|
||||
border-radius: 4px;
|
||||
background-color: var(--border-color);
|
||||
}
|
||||
|
||||
.tag.enabled {
|
||||
background-color: rgba(76, 175, 80, 0.2);
|
||||
color: var(--success-color);
|
||||
}
|
||||
|
||||
.refresh-info {
|
||||
font-size: 12px;
|
||||
color: var(--text-secondary);
|
||||
text-align: center;
|
||||
margin-top: 20px;
|
||||
}
|
||||
|
||||
.toast {
|
||||
position: fixed;
|
||||
bottom: 20px;
|
||||
right: 20px;
|
||||
padding: 12px 24px;
|
||||
border-radius: 8px;
|
||||
background-color: var(--card-background);
|
||||
border: 1px solid var(--border-color);
|
||||
display: none;
|
||||
animation: slideIn 0.3s ease;
|
||||
}
|
||||
|
||||
.toast.success { border-color: var(--success-color); }
|
||||
.toast.error { border-color: var(--error-color); }
|
||||
|
||||
@keyframes slideIn {
|
||||
from { transform: translateY(100px); opacity: 0; }
|
||||
to { transform: translateY(0); opacity: 1; }
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="container">
|
||||
<header>
|
||||
<h1>
|
||||
<span class="icon">🕐</span>
|
||||
Chrony NTP Server
|
||||
</h1>
|
||||
{% if status.tracking.stratum and status.tracking.stratum != '0' %}
|
||||
<span class="status-badge status-synced">● Synchronized</span>
|
||||
{% else %}
|
||||
<span class="status-badge status-warning">● Synchronizing</span>
|
||||
{% endif %}
|
||||
</header>
|
||||
|
||||
<div class="grid">
|
||||
<div class="card">
|
||||
<h2>Time Synchronization Status</h2>
|
||||
<div class="stat-grid">
|
||||
<div class="stat">
|
||||
<div class="stat-label">Reference Server</div>
|
||||
<div class="stat-value">{{ status.tracking.reference_name or 'N/A' }}</div>
|
||||
</div>
|
||||
<div class="stat">
|
||||
<div class="stat-label">Stratum</div>
|
||||
<div class="stat-value">{{ status.tracking.stratum or 'N/A' }}</div>
|
||||
</div>
|
||||
<div class="stat">
|
||||
<div class="stat-label">System Time Offset</div>
|
||||
<div class="stat-value mono">{{ status.tracking.system_time or 'N/A' }}</div>
|
||||
</div>
|
||||
<div class="stat">
|
||||
<div class="stat-label">Frequency</div>
|
||||
<div class="stat-value mono">{{ status.tracking.frequency or 'N/A' }} ppm</div>
|
||||
</div>
|
||||
<div class="stat">
|
||||
<div class="stat-label">Root Delay</div>
|
||||
<div class="stat-value mono">{{ status.tracking.root_delay or 'N/A' }}</div>
|
||||
</div>
|
||||
<div class="stat">
|
||||
<div class="stat-label">Update Interval</div>
|
||||
<div class="stat-value mono">{{ status.tracking.update_interval or 'N/A' }}s</div>
|
||||
</div>
|
||||
</div>
|
||||
<div class="button-group">
|
||||
<button class="btn btn-primary" onclick="forceSync()">Force Sync</button>
|
||||
<button class="btn btn-secondary" onclick="burstSync()">Burst Mode</button>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="card">
|
||||
<h2>Configuration</h2>
|
||||
<ul class="config-list">
|
||||
<li>
|
||||
<span>NTP Server Mode</span>
|
||||
{% if options.enable_ntp_server %}
|
||||
<span class="tag enabled">Enabled</span>
|
||||
{% else %}
|
||||
<span class="tag">Disabled</span>
|
||||
{% endif %}
|
||||
</li>
|
||||
<li>
|
||||
<span>Detailed Logging</span>
|
||||
{% if options.detailed_logging %}
|
||||
<span class="tag enabled">Enabled</span>
|
||||
{% else %}
|
||||
<span class="tag">Disabled</span>
|
||||
{% endif %}
|
||||
</li>
|
||||
<li>
|
||||
<span>NTP Pools</span>
|
||||
<span class="tag">{{ options.ntp_pools|default([])|length }}</span>
|
||||
</li>
|
||||
<li>
|
||||
<span>NTP Servers</span>
|
||||
<span class="tag">{{ options.ntp_servers|default([])|length }}</span>
|
||||
</li>
|
||||
<li>
|
||||
<span>Allowed Networks</span>
|
||||
<span class="tag">{{ options.allow_clients|length }}</span>
|
||||
</li>
|
||||
</ul>
|
||||
<p style="margin-top: 15px; font-size: 13px; color: var(--text-secondary);">
|
||||
To modify settings, go to Add-on Configuration in Home Assistant.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="card">
|
||||
<h2>NTP Sources</h2>
|
||||
<table>
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Status</th>
|
||||
<th>Server</th>
|
||||
<th>Stratum</th>
|
||||
<th>Poll</th>
|
||||
<th>Reach</th>
|
||||
<th>Offset</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{% for source in status.sources %}
|
||||
<tr>
|
||||
<td>
|
||||
{% if source.state == '*' %}
|
||||
<span class="source-state synced"></span>Synced
|
||||
{% elif source.state == '+' %}
|
||||
<span class="source-state combined"></span>Combined
|
||||
{% elif source.state == '-' %}
|
||||
<span class="source-state candidate"></span>Candidate
|
||||
{% elif source.state == '?' %}
|
||||
<span class="source-state unreachable"></span>Unreachable
|
||||
{% elif source.state == 'x' %}
|
||||
<span class="source-state falseticker"></span>Falseticker
|
||||
{% elif source.state == '~' %}
|
||||
<span class="source-state variable"></span>Variable
|
||||
{% else %}
|
||||
<span class="source-state unreachable"></span>Unknown
|
||||
{% endif %}
|
||||
</td>
|
||||
<td>{{ source.name }}</td>
|
||||
<td>{{ source.stratum }}</td>
|
||||
<td>{{ (2 ** (source.poll | int)) }}s</td>
|
||||
<td>{{ source.reach }}</td>
|
||||
<td>{{ source.last_sample_offset }}</td>
|
||||
</tr>
|
||||
{% else %}
|
||||
<tr>
|
||||
<td colspan="6" style="text-align: center; color: var(--text-secondary);">
|
||||
No sources available yet. Chrony may still be starting up.
|
||||
</td>
|
||||
</tr>
|
||||
{% endfor %}
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
|
||||
{% if options.enable_ntp_server %}
|
||||
<div class="card" style="margin-top: 20px;">
|
||||
<h2>Connected Clients</h2>
|
||||
<table>
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Client</th>
|
||||
<th>NTP Requests</th>
|
||||
<th>Dropped</th>
|
||||
<th>Last Seen</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
{% for client in status.clients %}
|
||||
<tr>
|
||||
<td>{{ client.hostname }}</td>
|
||||
<td>{{ client.ntp_requests }}</td>
|
||||
<td>{{ client.drop }}</td>
|
||||
<td>{{ client.last_rx }}</td>
|
||||
</tr>
|
||||
{% else %}
|
||||
<tr>
|
||||
<td colspan="4" style="text-align: center; color: var(--text-secondary);">
|
||||
No clients have connected yet.
|
||||
</td>
|
||||
</tr>
|
||||
{% endfor %}
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
<h3 style="margin-top: 20px; font-size: 14px; color: var(--text-secondary);">Allowed Networks</h3>
|
||||
<ul class="config-list" style="margin-top: 10px;">
|
||||
{% for network in options.allow_clients %}
|
||||
<li>{{ network }}</li>
|
||||
{% endfor %}
|
||||
</ul>
|
||||
</div>
|
||||
{% endif %}
|
||||
|
||||
<p class="refresh-info">Page auto-refreshes every 30 seconds • Last updated: <span id="lastUpdate"></span></p>
|
||||
</div>
|
||||
|
||||
<div id="toast" class="toast"></div>
|
||||
|
||||
<script>
|
||||
// Get base path for API calls (handles HA ingress prefix)
|
||||
const basePath = window.location.pathname.replace(/\/$/, '');
|
||||
|
||||
// Update timestamp
|
||||
document.getElementById('lastUpdate').textContent = new Date().toLocaleTimeString();
|
||||
|
||||
// Auto-refresh every 30 seconds
|
||||
setTimeout(() => location.reload(), 30000);
|
||||
|
||||
function showToast(message, type) {
|
||||
const toast = document.getElementById('toast');
|
||||
toast.textContent = message;
|
||||
toast.className = 'toast ' + type;
|
||||
toast.style.display = 'block';
|
||||
setTimeout(() => toast.style.display = 'none', 3000);
|
||||
}
|
||||
|
||||
function forceSync() {
|
||||
fetch(basePath + '/api/force-sync', { method: 'POST' })
|
||||
.then(r => r.json())
|
||||
.then(data => {
|
||||
showToast(data.message, data.success ? 'success' : 'error');
|
||||
if (data.success) setTimeout(() => location.reload(), 1000);
|
||||
})
|
||||
.catch(() => showToast('Failed to connect', 'error'));
|
||||
}
|
||||
|
||||
function burstSync() {
|
||||
fetch(basePath + '/api/burst', { method: 'POST' })
|
||||
.then(r => r.json())
|
||||
.then(data => {
|
||||
showToast(data.message, data.success ? 'success' : 'error');
|
||||
})
|
||||
.catch(() => showToast('Failed to connect', 'error'));
|
||||
}
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
Reference in New Issue
Block a user