hello john no it seems to definitely be reaching them. i have checked using the dmpeers command. also running the ntpq -p i get the exact same thing as what is on the other box. also note that in my trials i have set a machines time from off the other machine and made them perfectly in synch. when i then take that machine and point it to the upstream server it then drifts until it is three minutes ahead. i just dont get it. odd dont you think?
"John Pettitt" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > rancid moth wrote: >> hello, >> >> not being very familiar with the ntp protocol, and currently introducing >> myself to it properly (i.e. have always used though never dug deeply into >> it), i have established two ntp services on two different Linux machines. >> Both ntp servers are pointing to the _same_ upstream server. There is a >> four minute difference in time on the machines. Lets call them machine A >> and B. initially i established them to the same time, by synching B's >> time >> from A which itself was synched from the upstream internet ntp server. >> If i >> then modify B's config to also synch from the same upstream source, B, >> given >> enough time, will drift 4 minutes ahead of A. Can someone please point >> me >> to an introductory explanation as to why/how this can occur. >> >> cheers >> moth >> >> > > Basically your setup isn't working for some reason - if you do "ntpq -p" > on both boxes you'll > probably see that one or both of them are not actually talking to the > upstream. As a general rule > you need at least four upstream servers for stability (see > www.pool.ntp.org for how to get more > servers). It's probably a good idea to peer the two local servers and > then point them at diverse > (overlapping is ok) groups of upstream servers as this will give to a very > robust setup. > > If I had to guess I'd say that a firewall somplace is blocking the ntp > packets. > > John _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
