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bio website douglasfcalvert.net
location Syracuse, NY
age 34
visits member for 3 years, 3 months
seen 2 days ago

dfc


Oct
23
comment Synchronize clock with NTP while online, and with RTC while offline?
I think you should look into chrony. Respectfully it seems you are dismissing a good option based on a hunch. In my opinion it is backwards to investigate chrony iff no RTC-ntpd is found. It seems the easiest thing is to see if chrony meets your needs and if not then go down this rabbit hole
Oct
23
comment Synchronize clock with NTP while online, and with RTC while offline?
I understand that the sys clock drifts more than RTC. I am curious what you found unacceptable regarding the manner/effectiveness of chrony's management of system drift? How did chrony fail for you?
Oct
22
answered configuration to use gps time with no internet connection
Oct
22
comment configuration to use gps time with no internet connection
It looks like removing iburst solved the problem? I do not understand the last paragraph? Did you remove the ubuntu/ntp.pool entries?
Oct
20
revised udev rule running setserial low_latency don't work
added 343 characters in body
Oct
20
revised udev rule running setserial low_latency don't work
added 343 characters in body
Oct
20
comment udev rule running setserial low_latency don't work
Yes this works with my servers. I have added one more thing to my answer you should check. If this answer is helpful please mark it as accepted.
Oct
20
comment Access NMEA reference clock and GPS position simultaneously
If this answer was helpful please mark it as accepted. When you first tried gpsd+ntpd your ntp did not suport PPS. You might want to retry the gpsd setup.
Oct
20
comment configuration to use gps time with no internet connection
FYI: two time sources is the worst number of time sources. ntpd will not know how to break a tie between the difference time sources.
Oct
20
comment configuration to use gps time with no internet connection
Always paste the output of ntpq -pcrv when asking ntp questions. It is strange that network access is preventing ntpd from talking to the GPS. iburst makes no sense on a reference clock line. I would remove the iburst option and restart ntpd and see if that helps. If it doesnt help then remove all external servers and see what happens.
Oct
19
answered Access NMEA reference clock and GPS position simultaneously
Oct
19
answered udev rule running setserial low_latency don't work
Oct
17
comment CentOS configure ntpd to serve DST/localtime
I am not sure this is the same thing as serving DST via ntpd. This answer is essentially "serve UTC + TZ Offset and pretend its just UTC." It is not clear how your solution would handle EST to EDT transitions. Grammar Nazi Note: There is no such thing as "partially unique" and therefore "completely unique" is equally silly. There are no "levels of uniqueness" something is either unique or it is not.
Oct
1
comment RedHat ntp offset becomes bigger over time
If time was important you would have more or less than two time servers defined. Two is the worst number of servers to use. Is that your entire ntp.conf? You declare drift file twice? Logging twice with different filenames? Are the upstream servers working properly: Last event was peer stratum change?
Oct
1
comment RedHat ntp offset becomes bigger over time
Two servers is the absolute worst number of servers to use. A man with one watch knows what time it is, man with two watches is never sure. Can you paste the out put of ntpq -p -crv after ntpd has been up for a little bit?
Oct
1
comment RedHat ntp offset becomes bigger over time
burst iburst minpoll4 maxpoll 4 is "overkill." Do you understand what all those options mean? Do you really think polling every 16 seconds is a good idea? Is that your entire ntp config? No restrictions at all?
Sep
29
comment SES time sync error
And can you also paste ntpq --version and diff -u /etc/ntp.conf /etc/ntp.conf.dhcp
Sep
29
comment SES time sync error
But it doesn't. How do you know his clock is not off by more than the panic threshold? If it is -q wont fix things. He did not need -q for the last six months with ntpd functiong acceptably. Why did you decide that he does not need kernel time discipline provided by ntpd? The big problem is that there is no indication of the exact problem. Without a peers billboard and relevant syslog messages everything is just a guess.
Sep
29
comment SES time sync error
I dont know what "it is plainly ubuntu" means. But the stop ntpd, ntpdate, start ntpd is never a good solution whether its Ubuntu, redhat, gentoo, debian, slackware, whatever distro.
Sep
29
comment SES time sync error
Why are you recommending OP stop and start ntpd in order to run a deprecated command and then restart ntpd?