[CentOS] ntpdate past CentOS 7

Wed Dec 2 23:02:08 UTC 2020
Fred <fred.fredex at gmail.com>

and I'm doing much the same: a Raspberry Pi running Raspbian, acts as my
nameserver (instead of my ISP) and NTP server. all the systems in-house
sync time from it.

On Wed, Dec 2, 2020 at 3:22 PM Bill Gee <bgee at campercaver.net> wrote:

> What IS in your chrony.conf file?
>
> "pool.ntp.org" is not a single server.  It is a collection of several
> dozen.  When you specify a pool of servers for chrony, it will pick 4
> mostly at random and use those.  The four servers it chooses will change
> over time.
>
> If you want to use exactly one specific server, then take the pool out of
> chrony.conf and add your specific server.  I do not see a way for chronyc
> to remove servers, so it is a matter of editing the file directly and then
> restarting chronyd.
>
> In my case, only my internal master server goes against a pool.  All other
> internal systems use the internal master as their only source.  Sometimes
> when I do "chronyc sources" on them, I see the server listed twice.  After
> investigation I found that one is for IPv4 and the other for IPv6.
>
> --
> Bill Gee
>
>
>
> On Wednesday, December 2, 2020 2:00:56 PM CST Jerry Geis wrote:
> > Thanks everyone for the comments. So trying to use the new "chronyc/d"
> >
> > So trying a couple things with chronyc
> >
> > chronyc sources
> > 210 Number of sources = 5
> > MS Name/IP address         Stratum Poll Reach LastRx Last sample
> >
> ===============================================================================
> > ^* time.cloudflare.com           3  10   377   220   -481us[ -503us] +/-
> > 17ms
> > ^- zeit.arpnetworks.com          2   9   377   452  -1083us[-1104us] +/-
> >  100ms
> > ^- lofn.fancube.com              2  10   377   851  -1833us[-1854us] +/-
> > 64ms
> > ^- ntp3.junkemailfilter.com      2   9   377   227   -937us[ -959us] +/-
> > 76ms
> > ^- b.st1.ntp.br                  1   6   377    56  -2300us[-2300us] +/-
> > 79ms
> >
> > NONE of the above are listed in /etc/chrony.conf
> >
> > Then I tried "chronyc add server pool.ntp.porg" and ran "chronyc sources"
> > again and my server was not added ?
> >
> > I am trying to use the command line chronyc - to "add" the server I want
> -
> > also wish there was an EASY way to clear the server list. Have not seen
> > that though.
> >
> > What I need is a way to add the server i want - list the server to make
> > sure my server is in the list - and remove servers I dont want (or all).
> >
> > Thanks,
> >
> > Jerry
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