Richard B. Gilbert wrote: > Jammer wrote: >> Incredibly slow /etc/init.d/ntpd start >> (it hangs on boot so I do it manually but it is slow). > <snip> >> Is it a hardware problem? >> The computer clock seems to work fine. >> >> Should I be able to ping all the ntp servers in my /etc/ntp.conf? >> I can't. > > Normally, you should be able to ping NTP servers. > > You should not, however, start your troubleshooting by pinging your NTP > servers. Start by pinging something on your local network such as your > router or another computer. Success tells you that your computer is > able to talk to your local network. > > If you didn't ping your router, do it now. If it doesn't respond, you > have some idea where to look for your problem. > > Next, ping your ISP's gateway. If that works, you've established that > you can connect to the internet. > > Now try pinging your NTP servers. >
Before you do that ping the nameservers listed in the resolv.conf file. They need to be available in order to resolve the names in your ntpd.conf file. > Try ntpdate -dU <server address> > Do you get a response? (This should not set your clock, it should just > tell you what ntpdate would have done if you had allowed it to.) > > If you get no response, try: > nslookup <fully qualified domain name of NTP server> > Don't use nslookup, use dig. nslookup is really bad as a diagnostic tool. Danny > Does that return a numeric IP address in "dotted decimal" form? It > should look like 123.231.135.7 (the numbers will be different; I just > pulled those out of my a**!). If so, DNS is working. If not, you > probably need to get professional help from your ISP's help desk. > > You might also try issuing: > > ntpq -p > > That should list all your configured servers. The "reach" field should > show "377" for each server if ntpd has been running for at least 30 > minutes. If the reach field shows 0 you are unable to get a reply from > that server. If they all say 0, you have some sort of a configuration > or network problem. If you get some value greater than 0 but less than > 377 you are having only partial success reaching your servers. _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
