GregLedet.net - Latest Comments

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Ricardo — Fri, 16 Dec 2022 12:17:14 -0000

If you could share what you did please, I would appreciate it.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Ricardo — Fri, 16 Dec 2022 12:07:53 -0000

Hello, it works very excellent but I have a problem with the upload value shown in the prtg. I already added the value that you put in the comments "ECHO ^<volumesize^>MegaBit^</volumesize^>" but it still can't be solved, I have moved some things in your code but I can't get it to be solved, I hope you can help me. Thank you.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Jaime Casado — Fri, 14 Oct 2022 12:25:10 -0000

This works great. How can I run this on a Remote Server and get the results from it.
This only works on the probe

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Leslie Knepp — Thu, 08 Sep 2022 19:00:34 -0000

Thanks Greg! This helped me out a lot!

I ran into a problem with the code you posted above being formatted (presumably by your blogging software). I replaced all of the ‘ ’ “ ” symbols with their ' " counterparts and replace the em-dash in –accept-license with two en-dashes like --accept-license.

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Greg Ledet — Mon, 22 Aug 2022 08:10:24 -0000

Patrick, AFAIK you can do whatever you want to the cmdline.txt as long as you're not disabling the stuff needed for the gps. Now, for setting things up, I have no idea. I'm assuming you want to do a headless deployment where it's just plug and play, and since I've never tried it, I can't tell you if you can or not. Try it out and let us know!

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Patrick Dickey — Sat, 20 Aug 2022 02:00:02 -0000

A question... Can you remove the console=serial0,115200 from the cmdline.txt before you boot up the first time, and add in the code for disabling bluetooth and setting up the GPS to the config.txt before you boot the first time? (I'm using Notepad++ to edit the two files before I put it into the pi).

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Greven — Sun, 08 May 2022 00:09:55 -0000

If you're getting 'nan' when you're trying to calculate the ntpoffset, as Radu said below the entries in the log might be under SHM(0) instead of the IP. To do the calculation you can use this instead (you might need to change the path to reflect your config):

awk '
/SHM$0$/ { sum += $5 * 1000; cnt++; }
END { print sum / cnt; }
' </var>

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Greven — Fri, 06 May 2022 21:30:42 -0000

Just wanted to say thank you, I've tried a few different guides and each of them resulted in unexplained errors and a lot of frustration. Yours is the first one that's actually worked end-to-end without issue, and I appreciated the explanations along with each step.

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Tim Thompson — Sat, 16 Apr 2022 12:15:01 -0000

Thank you all for your contributions. I too had to delete python-gps from the install list.

When I cat ttyAMA0 I get what looks like good NMEA output from the Adafruit Ultimate GPS Hat. The same is true if I cat serial0. Someone suggested using serial0 instead of ttyAMA0, but the results are the same.

When I get status from gpsd (systemctl status gpsd) I get the following response:
"● gpsd.service - GPS (Global Positioning System) Daemon
Loaded: loaded (/lib/systemd/system/gpsd.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2022-04-17 15:19:07 EDT; 1min 12s ago
TriggeredBy: ● gpsd.socket
Process: 146765 ExecStart=/usr/sbin/gpsd $GPSD_OPTIONS $OPTIONS $DEVICES (code=exited, status=0/SUCCESS)
Main PID: 146766 (gpsd)
Tasks: 1 (limit: 4164)
CPU: 13ms
CGroup: /system.slice/gpsd.service
└─146766 /usr/sbin/gpsd ”-n” ”/dev/serial0 /dev/pps0″

Apr 17 15:19:07 raspberrypi systemd[1]: Started GPS (Global Positioning System) Daemon.
Apr 17 15:19:54 raspberrypi gpsd[146766]: gpsd:ERROR: SER: device open of \xe2\x80\x9d-n\xe2\x80\x9d failed: No such file or directory - retrying read-only
Apr 17 15:19:54 raspberrypi gpsd[146766]: gpsd:ERROR: SER: read-only device open of \xe2\x80\x9d-n\xe2\x80\x9d failed: No such file or directory
Apr 17 15:19:54 raspberrypi gpsd[146766]: gpsd:ERROR: \xe2\x80\x9d-n\xe2\x80\x9d: device activation failed, freeing device..."

When I run gpsmon, I get the following response:

"tcp://localhost:2947 JSON slave driver> OAOA
(82) {"class":"VERSION","release":"3.22","rev":"3.22","proto_major":3,"proto_minor":14}
(32) {"class":"DEVICES","devices":[]}
(122) {"class":"WATCH","enable":true,"json":false,"nmea":false,"raw":2,"scaled":false,"timing":false,"split24":false,"pps":true}"

When I run ppstest /dev/pps0 I get what looks like good pps data.

Any ideas what the problem might be? I'm using a pi 4 with Raspberry Pi OS Bullseye 64-bit.

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Larry Westfall — Fri, 11 Feb 2022 20:12:48 -0000

make sure you have is device correctly in the devices= section of the /etc/default/gpsd file.
Mine looks like this:
START_DEAMON="true"
DEVICES="/dev/ttyS0 /dev/pps0"

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Larry Westfall — Fri, 11 Feb 2022 20:10:04 -0000

Just remove it from the install list

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

thunder46350 — Mon, 24 Jan 2022 15:03:42 -0000

Greatings!

thank you for your write up. I'm encountering one issue when following these instructions though.

sudo apt install python-gps returns "E: Package 'python-gps' has no installation candidate"

Does anyone know how to overcome this?

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Greg Ledet — Sun, 16 Jan 2022 10:56:46 -0000

.0 is valid. No one said we're using a /24... and 254 is rarely the gateway, usually .1 is the gateway.

Anyway, none of that matters here, because they are just pseudo IP addresses. Here's a link for you to read more about the reference clock: https://gist.github.com/edro15/c3fbaaabfe31ecb799363ffab587f336

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Kipton Moravec — Sat, 15 Jan 2022 12:10:01 -0000

127.127.28.0 is not a valid IP address. It is the address for broadcast messages to the whole subnet. No device should be on the subnet broadcast address.

If you are using the whole Class D subnet space XXX.XXX.XXX.0 to XXX.XXX.XXX.255 you can not use 0 or 255. Usually 1 but sometimes 254 is the gateway address, so that is where you go to get out of the LAN to the internet for example. So unless you are a gateway do not use those addresses. That leaves 2 to 253 for the last value. Lots to use. +-

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Antonino — Fri, 05 Nov 2021 14:06:35 -0000

I have the same problem, XML: The returned XML does not match the expected schema. (code: PE233) -- JSON: The returned JSON does not match the expected structure (Invalid JSON.). (code: PE231)

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Giuseppe Marullo — Thu, 04 Nov 2021 18:07:33 -0000

Hi, using a pi zero w for testing, no way to make it show the pps in gpsmon. I can see stuff using:
sudo ppstest /dev/pps0
But seems that gpsd simply ignores the pps device.

ntpq never show GPS entries as useable (reach=0) for both and of course star is always on ext ntp servers.

Any hint?
TIA

Giuseppe Marullo

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

April W — Sun, 10 Oct 2021 13:52:01 -0000

Thank you!

I used this to make a GPS-based NTP time server on my network. It makes me very happy to know I now have time sync across my devices, even if my Internet connection goes down. :)

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Neil Garry — Wed, 15 Sep 2021 13:25:08 -0000

Thanks, tbh I think my issue was me not reading properly the UK don't have the extra "," so I amended that and the figures fixed themselves

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Greg Ledet — Tue, 14 Sep 2021 10:16:16 -0000

Adjust the line in the script that says

ECHO ^<volumesize^>MegaBit^</volumesize^>

Under the "Upload" and put it as the correct size.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Greg Ledet — Tue, 14 Sep 2021 10:16:09 -0000

Adjust the line in the script that says

ECHO ^<volumesize^>MegaBit^</volumesize^>

Under the "Upload" and put it as the correct size.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Neil Garry — Tue, 14 Sep 2021 10:08:50 -0000

Did you mange to resolve this?

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Mark F — Mon, 13 Sep 2021 12:32:13 -0000

I just used this to set up a RPi 4 NTP server on the latest Buster Lite. Awsome!

Two things (use sudo raspi-config) I added that others may want to use:
1) Set the local timezone. I do this on all my PIs.
2) Set the hostname (I use NTPiD). Easier to remember than IP address for putty.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

riy — Fri, 21 May 2021 05:58:10 -0000

The sensor is working, thank you very much!
But I have a strange problem: while Download is displayed perfectly, Upload is displayed with decimal sign in wrong place. I've tried to figure out this trouble myself, but no luck. Please help!
https://uploads.disquscdn.c...
And if I tell PRTG to show all decimal places, it shows smth like "3,736.7674 Mbit/s" This can not be, I have 1Gbit/sec ethernet, so max speed can be not more than 1Gbit.

Re: Custom PRTG Sensor with Speedtest.Net CLI (Windows)

Joakim — Wed, 28 Apr 2021 01:50:05 -0000

Remember to use -- when accepting the licenses via the CLI, i.e.,
--accept-license --accept-gdpr

If no you will still be able to execute it from the command line and the output looks
OK but when PRTG triggers it only zeros will be seen in PRTG.

I don't konw if it matters but I prepended the output in the batchfile with:
echo ^
This was based on the PRTG Demo Batchfile in the same directory.

Re: Building a Stratum 1 NTP Server with a Raspberry Pi 4 and Adafruit Ultimate GPS Hat

Radu — Wed, 24 Feb 2021 03:25:51 -0000

check ntpstats file, often the NTP will print there SHM(0) and SHM(2) "remote peers" not the actual 127.127 addresses. modify the script to look for those and it will work fine