I'm working with 10 raspberry and they are all connected to the same network via Wifi. I need to get the right time from the network, so I modified the ntp.conf file with the IP of my network ( and that I wanna use to retrive the right time.

I've rebooted the raspberries but now three of them they still have a wrong time, I've also checked the time location but the location is right.

Can someone helps me? Which is the best way to modify the ntp.conf file? Should I modify other files?

Thanks for your help

  • Just to be sure: So there are NTP servers on your network at those addresses? – goldilocks Jul 13 '16 at 10:38
  • Yes, there are..there is a command to get the data directly from the NTP server? just to be sure that is working properly? – macco Jul 13 '16 at 10:43
  • Dunno, I've never run one. I despise ntp, TBH -- it's one of those things where when it works, it works and that is terrific, when it doesn't, it begins to strike me as atrociously designed, particularly in the "user interface" department. You might want to ask about this on our larger sibling site Unix & Linux instead ("instead" because they don't like cross-posting, so if you do that delete this one first or leave a comment @goldilocks and I can close it). – goldilocks Jul 13 '16 at 11:08
  • I know, that is the reason why I opened this topic...But I wanna try to solve my problem because NTP is the only way that I should use to do that. – macco Jul 13 '16 at 11:22
  • Well, I think your RPis should have lines in ntp.conf server iburst server iburst or, given that you have many RPis possibly you could use one of those to broadcast to the RPis. Don't forget that for each server line each RPi will send/receive a packet to/from them each time it polls them (initially one every 64 seconds IIRC) - are your RPiS using off-site servers (e.g. of form <#>.<geo-graphic ID>.pool.ntp.org) - I wonder if there are issues with all those "time" packets? Also, if you do not use the "iburst" option it takes ntp daemons a while to sync-up,,,! – SlySven Jul 15 '16 at 2:57

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