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  1. #1

    Synchronization with ntpdate

    I'm trying to synchronize a client with an ntpdate server.
    The ntp.conf file from the server has the following lines:

    # /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

    driftfile /var/lib/ntp/ntp.drift

    # Enable this if you want statistics to be logged.
    #statsdir /var/log/ntpstats/

    statistics loopstats peerstats clockstats
    filegen loopstats file loopstats type day enable
    filegen peerstats file peerstats type day enable
    filegen clockstats file clockstats type day enable

    # You do need to talk to an NTP server or two (or three).

    # Note that "restrict" applies to both servers and clients, so a configuration
    # that might be intended to block requests from certain clients could also end
    # up blocking replies from your own upstream servers.

    # By default, exchange time with everybody, but don't allow configuration.
    restrict -4 default kod notrap nomodify noquery
    restrict -6 default kod notrap nomodify noquery

    # Local users may interrogate the ntp server more closely.
    restrict ::1

    # Clients from this (example!) subnet have unlimited access, but only if
    # cryptographically authenticated.
    restrict mask nomodify notrap

    # If you want to provide time to your local subnet, change the next line.
    # (Again, the address is an example only.)
    broadcastdelay 0.008

    # If you want to listen to time broadcasts on your local subnet, de-comment the
    # next lines. Please do this only if you trust everybody on the network!
    disable auth

    When I try from client #ntpdate
    the answer is:no server suitable for synchronization found

    Even if i try to synchronize from a web server like:
    the same answer:no server suitable for synchronization found

    Don't know where is the problem.

  2. #2
    Are you able to ping ?

    [root@server ~]# ntpdate
    15 Apr 20:25:00 ntpdate[31531]: adjust time server offset 0.006033 sec
    [root@server ~]# ping
    PING ( 56(84) bytes of data.
    64 bytes from ( icmp_seq=1 ttl=52 time=21.4 ms
    64 bytes from ( icmp_seq=2 ttl=52 time=21.6 ms
    64 bytes from ( icmp_seq=3 ttl=52 time=21.6 ms
    --- ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 2531ms
    rtt min/avg/max/mdev = 21.461/21.576/21.663/0.146 ms

    Do you know for sure that an ntp daemon (ntpd) is running on the machine ? That is in the private non-routable ip-block.

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