Infrastructure Services
The following features, enhancements, and changes related to infrastructure services are introduced in this Oracle Linux 8 release.
chrony
Updated to Version 4.5
The chrony
packages are updated to version 4.5. Notable changes
include:
-
Added the AES-GCM-SIV cipher to shorten Network Time Security (NTS) cookies to avoid some length-specific blocking of Network Time Protocol (NTP).
-
Improved automatic NTP source replacement for unreachable NTP sources.
-
Logging of important changes made by command requests using the
chronyc
command. -
Periodic refreshes of NTP sources. The default refresh period is two weeks. You can disable refreshes by adding the
refresh 0
configuration entry in thechrony.conf
file. -
Improved logging of source selection failures and falsetickers.
-
Added the
hwtstimeout
directive to configure timeout for late hardware transmit timestamps. -
Added the
chronyd-restricted
service as an optional service for minimal client-only configurations so that thechronyd
service can be started withoutroot
privileges. -
Fixed the
presend
option ininterleaved
mode. -
Fixed reloading of modified sources from the
sourcedir
directories.
linuxptp
Updated to Version 4.2
linuxptp
is an implementation of the Precision Time Protocol (PTP). The
linuxptp
package is updated to version 4.2 to include the following
notable changes:
-
Multiple domain capability in the
phc2sys
tool. -
Clock update and change notifications in the Precision Time Protocol (PTP) parent dataset.
-
Addition of the PTP Power Profile (IEEE C37.238-2011 and IEEE C37.238-2017).