Re: [chrony-users] clients -n missing hosts?

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

Why are you dumping all of this here? What is your problem?

If you do not want the hostnames displayed, read the man chronyc file
..................
Client commands
       dns option
           The dns command configures how hostnames and IP addresses are resolved in chronyc. IP addresses can be
           resolved to hostnames when printing results of sources, sourcestats, tracking and clients commands.
           Hostnames are resolved in commands that take an address as argument.

           There are five options:

           dns -n
               Disables resolving IP addresses to hostnames. Raw IP addresses will be displayed.
.............


Also using IP addresses instead of hostbnames is dangerous, as the server
owner could change the IP on his ntp host, and you could be out of luck.
There is nothing that prevents them from doing so.

On Fri, 6 May 2022, B. Cook wrote:

> [CAUTION: Non-UBC Email](I run void btw..) 
> chronyc (chrony) version 4.2 (+READLINE +SECHASH +IPV6 -DEBUG)
>
> This is a bare metal machine; not a vm. 
> ```
>  grep -Ev "^#|^$" /etc/chrony.conf
> server 209.51.161.238 iburst
> server 216.239.35.0 iburst
> server 162.159.200.123 iburst
> server 129.134.25.123 iburst
> logchange 0.5
> driftfile /var/lib/chrony/drift
> ntsdumpdir /var/lib/chrony/
> rtcsync
> makestep 1 -1
> minsources 2
> local stratum 2
> bindaddress 172.16.254.241
> allow 172.16.0.0/16
> allow 10.20.0.0/16
> allow 10.120.0.0/16
> ```
>
> and 
>
> ```
>  cat /etc/sv/chronyd/run
> #!/bin/sh
> install -d -m750 -o chrony -g chrony /var/run/chrony
> exec chronyd -n -L 1 -f /etc/chrony.conf -u chrony
> ```
>
> Using dnscrypt-proxy and its cloaking features.. I grab most timeservers (*.pool.ntp.org, time.windows.com,
> time.apple.com, time-ios.apple.com, etc.. ) and redirect them to our internal host, presently 172.16.254.241 
>
> Using wireshark to show we went to the correct server.. and got time.. 
>
> image.png
>
> (great) working.. 
>
> but 
>
> ```
>  chronyc clients -n | wc -l
> 3299
> ```
>
> but where am I?

We sure do not know.


> ```
> # chronyc clients -n  | grep 10.20.28
> 10.20.28.33                     1      0   -   -   15h       0      0   -     -
> 10.20.28.10                    93      0  10   -   719       0      0   -     -
> ```
>
> /flushdns, sync time, /displaydns.. all looks good.. 
>
> image.png
>
> Manually toggled/sync'd time on Windows10.. 
>
> Still not there.. 
>
> again looks like I made it.. 
>
> image.png
>
> and still not there.. 

Where do you want to be?


> I just restarted.. 

If you just restarted then chrony time is not going to be very good.


> ```
>  ~# chronyc tracking
>                         chronyc sources
>                         chronyc sourcestats -v
>
> Reference ID    : 8186197B (time3.facebook.com)
> Stratum         : 2
> Ref time (UTC)  : Fri May 06 12:29:17 2022
> System time     : 0.000049408 seconds fast of NTP time
> Last offset     : +0.000076917 seconds
> RMS offset      : 0.000076917 seconds
> Frequency       : 7.522 ppm fast
> Residual freq   : +2.200 ppm
> Skew            : 0.125 ppm
> Root delay      : 0.005109369 seconds
> Root dispersion : 0.000448218 seconds
> Update interval : 64.2 seconds
> Leap status     : Normal
> MS Name/IP address         Stratum Poll Reach LastRx Last sample
> ===============================================================================
> ^? clock.nyc.he.net              1   6   122   109    -75us[+1643ns] +/-   38ms
> ^- time1.google.com              1   6    37    51  -1514us[-1514us] +/-   14ms
> ^- time.cloudflare.com           3   6    37    51   +101us[ +101us] +/-   21ms
> ^* time3.facebook.com            1   6    37    52  -1539ns[  +75us] +/- 2716us
>                              .- Number of sample points in measurement set.
>                             /    .- Number of residual runs with same sign.
>                            |    /    .- Length of measurement set (time).
>                            |   |    /      .- Est. clock freq error (ppm).
>                            |   |   |      /           .- Est. error in freq.
>                            |   |   |     |           /         .- Est. offset.
>                            |   |   |     |          |          |   On the -.
>                            |   |   |     |          |          |   samples. \
>                            |   |   |     |          |          |             |
> Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
> ==============================================================================
> clock.nyc.he.net            3   3    10     +1.845  74795.320  -1304us   452us
> time1.google.com            5   4    71    -25.346    172.602  -2915us   355us
> time.cloudflare.com         5   4    71     +4.294     56.624   +319us   243us
> time3.facebook.com          5   3    70     +2.200     28.450   +113us   162us
> ```
>
> (confused how I used IPs but it converts to a name..)


Becasue that is what chrony does unless you tell it not to .


> I'm open to suggestions, and greatly appreciate any attention anyone feels this is worth.. 

Suggestions for what?


> I literally have no problem, but I was stepping through a problem and looking for something and couldn't find the
> host.. 

Education.