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Synchronizing Time with NTP

Synchronizing time with other servers can benefit an organization, allowing for better coordination of log files and helping with time-sensitive services like authentication. In this hands-on lab, we will be deploying a Network Time Protocol (NTP) server to use both an Internet NTP server and a peer NTP server on a subnet.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 15m
Last updated
Clock icon Sep 02, 2025

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Table of Contents

  1. Challenge

    Install the ntp Software Package

    Start an interactive root shell with sudo -i. Using the yum command, install the ntp software package.

    sudo -i
yum -y install ntp

  2. Challenge

    Configure the ntpd.service by Updating /etc/ntp.conf

    Use an editor to add the following lines to /etc/ntp.conf:

    restrict 10.0.5.20
peer 10.0.5.20
server 169.254.169.123 iburst

    Remove or comment out any other lines that start with "server".

  3. Challenge

    Enable and Start the ntpd.service

    Using systemctl, enable and start the ntpd.service immediately:

    systemctl enable ntpd.service --now

  4. Challenge

    Verify NTP Is Working Correctly

    Check the status of the ntpd.service to make sure it is running. Using the ntpq command, view the current state of synchronization:

    systemctl status ntpd.service
ntpq -c peers
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