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Date:      Thu, 23 Nov 2017 01:33:39 -0800
From:      Devin Teske <devin@shxd.cx>
To:        Emmanuel Vadot <manu@bidouilliste.com>
Cc:        Ian Lepore <ian@freebsd.org>, Emmanuel Vadot <manu@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org, owner-src-committers@freebsd.org
Subject:   Re: svn commit: r326095 - head/usr.sbin/bsdinstall/scripts
Message-ID:  <821D3401-1DA8-46B5-BF5C-AAC3BDA3D8F3@shxd.cx>
In-Reply-To: <df40d9f9214ec5fea0790fc3a94add44@megadrive.org>
References:  <201711221527.vAMFRlTc041361@repo.freebsd.org> <1511368688.46031.1.camel@freebsd.org> <df40d9f9214ec5fea0790fc3a94add44@megadrive.org>

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> On Nov 22, 2017, at 11:15 PM, Emmanuel Vadot <manu@bidouilliste.com> wrote=
:
>=20
>> On 2017-11-22 17:38, Ian Lepore wrote:
>>> On Wed, 2017-11-22 at 15:27 +0000, Emmanuel Vadot wrote:
>>> Author: manu
>>> Date: Wed Nov 22 15:27:47 2017
>>> New Revision: 326095
>>> URL: https://svnweb.freebsd.org/changeset/base/326095
>>> Log:
>>>   bsdinstall: Add ntpdate option
>>>  =20
>>>   When you install a computer for the first time, the date in the CMOS s=
ometimes
>>>   not accurate and you need to ntpdate as ntpd will fail a the time diff=
erence
>>>   is too big.
>>>   Add an option in bsdinstall to enable ntpdate that will do that for us=
.
>>>  =20
>>>   Reviewed by:    allanjude
>>>   Differential Revision:    https://reviews.freebsd.org/D13149
>>> Modified:
>>>   head/usr.sbin/bsdinstall/scripts/services
>>> Modified: head/usr.sbin/bsdinstall/scripts/services
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
>>> --- head/usr.sbin/bsdinstall/scripts/services    Wed Nov 22 15:18:11 201=
7    (r326094)
>>> +++ head/usr.sbin/bsdinstall/scripts/services    Wed Nov 22 15:27:47 201=
7    (r326095)
>>> @@ -46,6 +46,8 @@ DAEMONS=3D$( dialog --backtitle "FreeBSD Installer" \
>>>      local_unbound "Local caching validating resolver" ${local_unbound:-=
off} \
>>>      sshd    "Secure shell daemon" ${sshd_enable:-off} \
>>>      moused    "PS/2 mouse pointer on console" ${moused_enable:-off} \
>>> +    ntpdate    "Synchronize system and network time at bootime" \
>>> +        ${ntpdate_enable:-off} \
>>>      ntpd    "Synchronize system and network time" ${ntpd_enable:-off} \=

>>>      powerd    "Adjust CPU frequency dynamically if supported" \
>>>          ${powerd_enable:-off} \
>> The right way to enable a time-step at boot is to set the rc conf
>> variable ntpd_sync_on_start to YES.  ntpdate has been deprecated for
>> *years*.
>> -- Ian
>=20
> Hi Ian,
>=20
> Thanks I didn't know about option -g (nor ntpd_sync_on_start), this bring a=
 few questions :
>=20
> - Is there any reason to not always use -g for ntpd ? As a lambda user I j=
ust want my time to be set, no matter what.
> - Should we remove ntpdate in -current before 12 if it's deprecated ?
>=20
> I'll make the necessary changes according to your (or others) answers.
>=20

I would not remove ntpdate.

Is there a way to make ntpd sync and then quit immediately?

If not, sounds like ntpdate serves a purpose not filled by ntpd.

Valid case is someone running a VM that gets paused for days, weeks, or even=
 months at a time. On such a VM it may make more sense to let the clock be o=
nly sporadically managed in an adhoc manner.

I personally like to use ntpdate on said VMs because I generally set a timeo=
ut on my ssh-agent in said VMs and by managing the clock manually allows me t=
o better control keys loaded.

Pretty sure other people may have other reasons for non-daemonized clock man=
agement.
--=20
Devin=




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