Date: Thu, 23 Nov 2017 13:33:50 -0800 From: Devin Teske <devin@shxd.cx> To: rgrimes@freebsd.org Cc: cem@freebsd.org, Emmanuel Vadot <manu@bidouilliste.com>, src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r326095 - head/usr.sbin/bsdinstall/scripts Message-ID: <F94B65A7-D2AA-47FB-90C4-439DDFDD1AC7@shxd.cx> In-Reply-To: <201711231729.vANHTVmo092083@pdx.rh.CN85.dnsmgr.net> References: <201711231729.vANHTVmo092083@pdx.rh.CN85.dnsmgr.net>
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> On Nov 23, 2017, at 9:29 AM, Rodney W. Grimes <freebsd@pdx.rh.CN85.dnsmgr.net> wrote: > > [ Charset UTF-8 unsupported, converting... ] >> On Thu, Nov 23, 2017 at 7:17 AM, Rodney W. Grimes >> <freebsd@pdx.rh.cn85.dnsmgr.net> wrote: >>>> Also we do provide an ntp.conf so ... >>> >>> We do, a template, all commented out, and does not work for >>> machines behind strong firewalls that wont allow ntp out >>> to the net but have internal ntp servers that are used for >>> such things. >>> >>> Well maybe not all commented out, I think it defaults to >>> some public pools. I believe it would be missing iburst >>> for use with ntp -pg >> >> Does ntpdate work out of the box in such environments? If so, how? > > ntpdate time.nist.gov > > ntpdate does not need a configureration file, just a command > line argument. > > At the banks we used to rely on both (in this order) ntpdate running and then ntpd running. Running ntpdate before ntpd meant that on a [re]boot, ntpdate would jump the box to the appropriate time, regardless of how far behind the clock was (think "dead cmos battery" on a system left powered-off for a long time). Meanwhile, running ntpd *without* the sync-on-start feature meant we could bounce the ntpd service as necessary and it would always adhere to the limit we set on it -- one hour to prevent syncing on systems which had been manually adjusted by greater than an hour for some one-off instances. -- Devin
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