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我不得不从源构建ntp包，并将它们全部安装在某些主机上。安装后，ntpdate 1.us.pool.ntp.org用于同步。然而，当我试图做ntpdate <ip_add_of_another_host>它显示了我下面的错误找不到适合同步的服务器对于NTP服务
21 Jul 18:57:53 ntpdate[18287]: no server suitable for synchronization found
更古怪，有时ntpdate <ip_addr_of_another_host>作品后，我尝试了NTP服务器的ntpdate 1.us.pool.ntp.org
我的配置文件：
# /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
# Specify one or more NTP servers.
# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
# on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for
# more information.
server 127.1.1.0 # local clock
fudge 127.1.1.0 stratum 10
# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
# details. The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
# might also be helpful.
#
# 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 nopeer noquery
restrict -6 default kod notrap nomodify nopeer noquery
# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::
我也尝试了默认配置，当我做apt-get install ntp，但它不工作。