Alexander,
First off, CentOS7 came with cronyd. Which was very annoying because when I tried to remove it, it had 2 prereqs: anaconda initial-setup
Now, I don't know why the setup program kept these 2 around. I think CentOS7 needs a bit growing up.
Anyway, I disabled chrony: systemctl disable time-sync systemctl stop time-sync
Then I installed ntp. However, when I started it it seems that it was not compiled with: --enable-all-clocks
So, I downloaded the latest and re-compiled with:
./configure --with-crypto --enable-all-clocks --enable-step-slew
I built it as per the document and everything looks good
-G
On 12/12/2014 04:29 AM, Alexander Dalloz wrote:
Am 11.12.2014 um 21:57 schrieb xaos:
Hello everyone,
If anyone is interested, I have created a HOWTO on running a Motorola GPS receiver connected to a CentOS 7 box via serial port (com1), with 1PPS over DCD.
The trick here is that CentOS 7 uses systemd and setup was a bit different. Anyway, everything works.
The result is a highly accurate NTP server, Stratum 1.
Here is the documentation.
http://www.maximaphysics.com/Centos_7_GPS_Setup.html
Let me know if something does not look right.
-George, N2FGX
Hello George,
thanks for the interesting article.
Mind you one question: why did you replace the NTPd shipping with CentOS 7 by a source compilation? Is the NTPd version provided by CentOS lacking some important feature for that usecase?
Regards
Alexander
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