Why are we still using NTP which is deprecated?

[Member Wallon]

Dear developers,

Since NTP is deprecated, why don’t we use chrony?

Put “https://” in front of the lines because the forum is blocking me.

www.ibm.com/docs/en/datapower-gateway/7.6?topic=commands-ntp-deprecated
ubuntu.com/server/docs/network-ntp
support.ntp.org/Dev/DeprecatingNtpdate

Best regards,
Wallon

[Moderator Brian Masinick]

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You are correct, chrony is the successor for ntp.

https://en.m.wikipedia.org/wiki/Chrony#:~:text=chrony%20is%20an%20implementation%20of,under%20the%20GNU%20GPL%20v2.

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Brian Masinick

[Member Robin]

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Dear Wallon,

ntp isn’t deprecated at all. Your link to ntp support support.ntp.org/Dev/DeprecatingNtpdate points to outdated information from 2014, concerning deprecation of former ntpdate versions, while there is a current stable release of ntp from 2020:

Stable: 4.2.8p15
Released: June 23, 2020

see: https://support.ntp.org/Main/WebHome (last updated 21. Dec. 2022)

When checking on antiX, it uses exactly this current version 1:4.2.8p15+dfsg-2~1.2.2+dfsg1-1.0nosystemd1:

$ apt-cache policy ntp
ntp:
  Installed: 1:4.2.8p15+dfsg-2~1.2.2+dfsg1-1.0nosystemd1
  Candidate: 1:4.2.8p15+dfsg-2~1.2.2+dfsg1-1.0nosystemd1
  Version table:
 *** 1:4.2.8p15+dfsg-2~1.2.2+dfsg1-1.0nosystemd1 500
        500 http://repo.antixlinux.com/testing testing/nosystemd amd64 Packages
        500 http://repo.antixlinux.com/testing testing/nosystemd i386 Packages
        100 /var/lib/dpkg/status
     1:4.2.8p15+dfsg-2~1.2.2+dfsg1-1 500
        500 http://ftp.de.debian.org/debian bookworm/main amd64 Packages
        500 http://ftp.de.debian.org/debian bookworm/main i386 Packages

Many greetings
Robin

Windows is like a submarine. Open a window and serious problems will start.

[Moderator Brian Masinick]

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On the other hand it has ties to Red Hat so more considering is needed and Christ is questionable.

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Brian Masinick

[Member olsztyn]

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My understanding has been (not necessarily correct):
– ntp and ntpdate, etc. are described as ‘transitional’ packages and can be (should) safely removed. They have been superseded (in my understanding) by ntpsec.
– antiX 23 does not have any of this stuff installed. This was apparently decided by anticapitalista. I do not have either in antiX 23 SID/Bookworm. Do we have a reason for ntpsec to be installed?

Edit:
In my clean-up of my installations of antiX I have been purging transitional packages whenever they were discovered. They are in general superseded anyway…

• This reply was modified 1 month, 3 weeks ago by olsztyn.

Live antiX Boot Options (Previously posted by Xecure):
https://antixlinuxfan.miraheze.org/wiki/Table_of_antiX_Boot_Parameters

[Member Wallon]

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Dear Robin,

A professional explained to me that he was putting Chrony on the Debian servers.
I did not know that NTP was deprecated.
I checked on my Debian 11 Gnome distribution and indeed, Debian no longer had NTP installed. I did not know that my time was not synchronized! So I installed Chrony.
When I see the advantages of Chrony, I no longer install NTP.

https://docs.fedoraproject.org/en-US/fedora/latest/system-administrators-guide/servers/Configuring_NTP_Using_the_chrony_Suite/#:~:text=One%20of%20the%20main%20differences,time%20reference%20to%20work%20well.

https://www.thegeekdiary.com/centos-rhel-7-chrony-vs-ntp-differences-between-ntpd-and-chronyd/

https://chrony.tuxfamily.org/comparison.html

Best regards,
Wallon

• This reply was modified 1 month, 3 weeks ago by Wallon.

[Moderator Brian Masinick]

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As I mentioned, Red Hat is involved with Chrony. On one hand it’s probably pretty secure, but on the other hand it’s closely tied to large corporate business so individuals may want to take note.

Secure for whom? Does it have a “reputation” of any kind that raises any concerns for non corporate interests like you and me?

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Brian Masinick

[Member Xunzi_23]

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The documentation from RHEL is an admin guide gives recommendations and scenarios,
but points out that crony depends on other applications like gpsd to function.

antiX already has ntp or ntpsec and conmann. conmann is a multitool which like a
pensive child keeps on nagging until it can synch with timeservers.
With standard settings it also sends inascesscent connectivity pings. Not good.

Whats better. User choice I guess.

[Member techore]

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Robin wrote:

ntp isn’t deprecated at all. Your link to ntp support support.ntp.org/Dev/DeprecatingNtpdate points to outdated information from 2014, concerning deprecation of former ntpdate versions

@Wallon, Robin is correct. The distinction being ntp.org’s ntp binary ntpdate is depreciated but ntpd is actively maintained and updated. Also, ntp is the protocol not a binary so that may be a bit confusing.

As others have said, Red Hat adopted chrony for their newer OSes. I used chrony on RHEL as a ntp client and it was fine. However, chrony wasn’t appropriate for use as a ntp server in my opinion, so I used ntpd when building RHEL ntp servers. That was five or six years ago, so something may have changed.

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