Chrony NTP Time Server on Ubuntu 24.04 LTS

Name: Chrony NTP Time Server on Ubuntu 24.04 LTS
Brand: cloudimg

Azure Networking

Chrony, a secure, high accuracy NTP time server that keeps your network's clocks correct to well under a millisecond.

Base

Hardened build

minimal ports, security patches applied at build time

Access

Unique credentials

generated on first boot, readable only by root

Verified

Boots working

services pass a health gate before release

Support

24/7, 365 days

by email and live chat, 24 hour response SLA

Overview

Chrony is an open source, versatile implementation of the Network Time Protocol and the modern default time daemon on most Linux systems. Running as the chronyd service, it disciplines the local clock from upstream NTP sources and serves precise time to other machines on UDP port 123, recovering gracefully from network interruptions and large offsets far better than the legacy ntpd it replaces. It is administered entirely from the command line with chronyc, so there is no database and no web console to manage.

Why the cloudimg image

The cloudimg image is hardened and fully patched with Chrony preconfigured as a network time server. It ships secure by default and is never an open amplifier: it answers only the local host and the private network ranges, a scoped allow list rather than allow all, and its command interface is bound to the local host only. On Azure, first boot adds the Hyper V host hardware clock as a high accuracy reference, and every instance is backed by a paired deploy guide and 24/7 cloudimg support.

Common uses

A precise NTP time server for your private network
High accuracy sync from the Azure host hardware clock
Secure time service that is not an open amplifier

Overview

Why the cloudimg image

Common uses

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