Merge pull request #50532 from linuxelf001/patch-5

Update time-sync.md

Author: ktoliver

articles/virtual-machines/linux/time-sync.md

@@ -130,34 +130,35 @@ This should return **hyperv**.
 
 ### chrony
 
-On Red Hat Enterprise Linux and CentOS 7.x, [chrony](https://chrony.tuxfamily.org/) configured to use a PTP source clock. The Network Time Protocol daemon (ntpd) doesn’t support PTP sources, so using **chronyd** is recommended. To enable PTP, update **chrony.conf**.
+On Ubuntu 19.10 and later versions, Red Hat Enterprise Linux, and CentOS 7.x, [chrony](https://chrony.tuxfamily.org/) is configured to use a PTP source clock. Instead of chrony, older Linux releases use the Network Time Protocol daemon (ntpd), which doesn't support PTP sources. To enable PTP in those releases, chrony must be manually installed and configured (in chrony.conf) by using the following code:
 
 ```bash
 refclock PHC /dev/ptp0 poll 3 dpoll -2 offset 0
 ```
 
-For more information on Red Hat and NTP, see [Configure NTP](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/s1-configure_ntp). 
+For more information about Ubuntu and NTP, see [Time Synchronization](https://help.ubuntu.com/lts/serverguide/NTP.html).
 
-For more information on chrony, see [Using chrony](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/sect-using_chrony).
+For more information about Red Hat and NTP, see [Configure NTP](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/s1-configure_ntp). 
 
-If both chrony and TimeSync sources are enabled simultaneously, you can mark one as **prefer** which sets the other source as a backup. Because NTP services do not update the clock for large skews except after a long period, the VMICTimeSync will recover the clock from paused VM events far more quickly than NTP-based tools alone.
+For more information about chrony, see [Using chrony](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/sect-using_chrony).
+
+If both chrony and TimeSync sources are enabled simultaneously, you can mark one as **prefer**, which sets the other source as a backup. Because NTP services do not update the clock for large skews except after a long period, the VMICTimeSync will recover the clock from paused VM events far more quickly than NTP-based tools alone.
+
+By default, chronyd accelerates or slows the system clock to fix any time drift. If the drift becomes too big, chrony fails to fix the drift. To overcome this, the `makestep` parameter in **/etc/chrony.conf** can be changed to force a timesync if the drift exceeds the threshold specified.
 
-By default chronyd accelerates or slows the system clock to fix any time drift. If the drift becomes too big, chrony will fail to fix the drift. To overcome this the `makestep` parameter in **/etc/chrony.conf** can be changed to force a timesync if the drift exceeds the threshold specified.
  ```bash
 makestep 1.0 -1
 ```
-Here, chrony will force a time update if the drift is greater than 1 second. To apply the changes restart the chronyd service.
+
+Here, chrony will force a time update if the drift is greater than 1 second. To apply the changes restart the chronyd service:
 
 ```bash
 systemctl restart chronyd
 ```
 
-
 ### systemd 
 
-On Ubuntu and SUSE time sync is configured using [systemd](https://www.freedesktop.org/wiki/Software/systemd/). For more information on Ubuntu, see [Time Synchronization](https://help.ubuntu.com/lts/serverguide/NTP.html). For more information on SUSE, see Section 4.5.8 in [SUSE Linux Enterprise Server 12 SP3 Release Notes](https://www.suse.com/releasenotes/x86_64/SUSE-SLES/12-SP3/#InfraPackArch.ArchIndependent.SystemsManagement).
-
-
+On SUSE and Ubuntu releases before 19.10, time sync is configured using [systemd](https://www.freedesktop.org/wiki/Software/systemd/). For more information about Ubuntu, see [Time Synchronization](https://help.ubuntu.com/lts/serverguide/NTP.html). For more information about SUSE, see Section 4.5.8 in [SUSE Linux Enterprise Server 12 SP3 Release Notes](https://www.suse.com/releasenotes/x86_64/SUSE-SLES/12-SP3/#InfraPackArch.ArchIndependent.SystemsManagement).
 
 ## Next steps