wn/minimal-setups
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

details
All checks were successful
ci/woodpecker/push/woodpecker Pipeline was successful
Details

Browse Source
This commit is contained in:
Wolfgang Hottgenroth
2025-03-13 15:05:05 +01:00
parent 208c9987af
commit 05d9a0906e
1 changed files with 21 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
content/content/blog/timeserver2.md
View File

@ -7,10 +7,31 @@ date: "2025-03-13"
![](https://numbers.hottis.de/ntp/stratum-rootdisp.png) ![](https://numbers.hottis.de/ntp/stratum-rootdisp.png)
[Details at ntppool.org](https://www.ntppool.org/scores/93.241.86.156)
## Harrison ## Harrison
![](/IMG_6089.jpg) ![](/IMG_6089.jpg)
![](/IMG_6088.jpg) ![](/IMG_6088.jpg)
Setup details for this machine are here: [https://gitea.hottis.de/wn/harrison-setup](https://gitea.hottis.de/wn/harrison-setup).
The snmpd subagent for monitoring the ntp daemon is here: [https://gitea.hottis.de/wn/snmp-agentx-ntpsec](https://gitea.hottis.de/wn/snmp-agentx-ntpsec).
### Details of Setup
A GPS receiver (ublox Neo-6M) is connected via a RS232 level converter (MAX232) and via the RS232 connection to a machine with a Debian installation.
The PPS signal of the GPS receiver is transmitted via the DCD line of the RS232 connection. That in turn is evaluated by the NMEA line discipline of Linux.
The GPS receiver is then configured as a reference clock in ntpsec:
```
refclock nmea unit 0 mode 0x10 minpoll 4 maxpoll 4 path /dev/ttyS0 ppspath /dev/pps0 baud 9600 flag1 1 flag2 1 flag3 0 refid LIgp
```
## David ## David
![](/IMG_6045.jpg) ![](/IMG_6045.jpg)
Details on the setup of this machine are described here: [https://minimal-setups.de/blog/timeserver/](https://minimal-setups.de/blog/timeserver/).