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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

Clock icon Intermediate
Clock icon 15m
Clock icon Jan 17, 2020

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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:

    server 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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