Linux: Network Time Protocol (NTP)

• Network Time Protocol (NTP)
  • Extremely important to maintain proper time
  • Used by:
    • Logs
    • Kerberos/IPSec
    • End Users
  • Clocks should always be synchronized to a common source

Configuring Time from the CLI

Viewing Time Configuration

timedatectl

Assigning a Time Zone

timedatectl list-timezones or tzselect timedatectl set-timezone <tz_name>

Setting the Time

timedatectl set-time 15:00:00

Synchronizing with an NTP Server

timedatectl set-ntp true Modify /etc/chrony.conf as needed systemctl restart chronyd chronyc sources (add -v for explanations)