Dell PowerFlex 4.5.x Install and Upgrade Guide

Configure the NTP service

Configure the NTP services for the PowerFlex management platform installer virtual machine (VM) and the PowerFlex management platform cluster VMs or physical nodes (co-resident or bring your own Linux PowerFlex management platform deployments).

1. To configure the NTP server, enter sudo vi /etc/chrony.conf and add the following:
   server <ntp ip address> iburst
   For example: server 10.10.105.240 iburst
2. To start the chronyd service, enter:
   sudo systemctl start chronyd
3. To enable chronyd, enter:
   sudo systemctl enable chronyd
4. To restart chronyd, enter:
   sudo systemctl restart chronyd
5. To verify that the Network Time Protocol service is running, enter:
   sudo systemctl status chronyd.service
6. Repeat all the steps for all the PowerFlex management platform VMs and the installer VM.
7. To check that the server is synced to NTP, enter:
   chronyc tracking

   NOTE:The time may take a few minutes to sync. The following are examples of chronyd tracking status:

   Successful chronyc tracking status

   • A configured NTP server should be listed under Reference ID,
   • Stratum should be a value greater than zero.
   • System Time should report less than 1 s time difference:

   PFMP2-450-747 :~ # chronyc tracking
   Reference ID : 179628F2 (23.150.40.242) 
   Stratum : 3 
   Ref time (UTC) : Tue Mar 12 21:24:20 2024
   System time : 0.000531569 seconds slow of NTP time   
   Last offset : -0.000336191 seconds
   RMS offset :  0.000201320 seconds
   Frequency : 6.809 ppm slow
   Skew : 0.029 ppm
   Root delay : 0.037072252 seconds
   Root dispersion : 0.004111907 seconds
   Update interval : 7242.7 seconds
   Leap status : Normal
   PFMP2-450-747 :~ #

   Unsuccessful chronyc tracking status

   • Stratum is 0 (not synced).
   • Leap status says Normal:

   node1:~ # chronyc tracking  
   Reference ID : 00000000 ()
   Stratum : 0
   Ref time (UTC) : Thu Jan 01 00:00:00 1970 
   System time : 0.000000000 seconds fast of NTP time
   Last offset : +0.000000000 seconds   
   RMS offset : 0.000000000 seconds
   Frequency : 0.000 ppm slow
   Residual freq : +0.000 ppm
   Skew : 0.000 ppm