我的SES设置在过去的6个月里运行良好，没有任何问题。 突然之间，它停止了昨天的工作，我得到臭名昭着的时间同步错误。
当然，我认为ntpd已经停止了，但是当我检查过程树时，我意外的发现它正在运行。
~ ps auwx | grep ntpd ntp 18223 0.0 0.0 33600 2132 ? Ss 07:05 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 106:112 ubuntu 19127 0.0 0.0 8144 668 pts/5 S+ 07:19 0:00 grep ntpd 然后我试着说， ntpdate
2 Sep 07:16:09 ntpdate[18966]: no servers can be used, exiting
我检查了/etc/ntp.conf文件，其中默认列出了默认的ubuntu服务器。
# /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 0.ubuntu.pool.ntp.org server 1.ubuntu.pool.ntp.org server 2.ubuntu.pool.ntp.org server 3.ubuntu.pool.ntp.org # Use Ubuntu's ntp server as a fallback. server ntp.ubuntu.com # 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 ::1 # Clients from this (example!) subnet have unlimited access, but only if # cryptographically authenticated. #restrict 192.168.123.0 mask 255.255.255.0 notrust # If you want to provide time to your local subnet, change the next line. # (Again, the address is an example only.) #broadcast 192.168.123.255 # 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 #broadcastclient
我在这里找不到这个问题。 然后我试图检查NTP服务器的状态，发现没有问题。
/etc/init.d/ntp status * NTP server is running
我也尝试手动添加一个NTP服务器，看看它是否工作，但也没有帮助
sudo ntpdate ntp.ubuntu.com 2 Sep 07:20:08 ntpdate[19203]: the NTP socket is in use, exiting
我真的不明白这里的问题是什么。 为什么ntpd在后台运行时不工作？
任何帮助，将不胜感激。 谢谢。
在运行ntpdate之前，您需要停止ntpd 。
sudo service ntp stop sudo ntpdate 0.ubuntu.pool.ntp.org sudo service ntp start
在Ubuntu上，你应该使用
ntpd -q
而不是ntpdate如果你已经安装ntpd
联机帮助页：
-q Exit the ntpd just after the first time the clock is set. This behavior mimics that of the ntpdate program, which is to be retired. The -g and -x options can be used with this option. Note: The kernel time discipline is disabled with this option.