【发布时间】：2020-03-03 18:12:08
【问题描述】：
我的操作系统是 Ubuntu 18.04.02 - 没有 NTP，我必须使用 apt-get 安装它。我有一个应用程序，我必须使用 NTP 来实现兼容性。我禁用并删除了 timesyncd 以避免冲突。
我将 ntp.conf 配置为使用：
0.north-america.pool.ntp.org
1.north-america.pool.ntp.org
2.north-america.pool.ntp.org
我可以毫无问题地 ping 它们。互联网连接很好。 NTP 服务正在运行，但一直处于请求状态，未同步时间。
这只是一个客户端 IoT 设备。我只需要与同一网络上的其他计算机同步执行任务的时间即可。
我错过了什么？我必须启用防火墙或端口吗？我正在阻止 IPV6，我在 NTPD_OPTS 中添加了 -4。
$ sudo service ntp status
● ntp.service - Network Time Service
Loaded: loaded (/lib/systemd/system/ntp.service; enabled; vendor preset: enab
Active: active (running) since Mon 2020-03-02 13:07:14 EST; 17h ago
Docs: man:ntpd(8)
Process: 2078 ExecStart=/usr/lib/ntp/ntp-systemd-wrapper (code=exited, status=
Main PID: 2090 (ntpd)
Tasks: 2 (limit: 1600)
CGroup: /system.slice/ntp.service
└─2090 /usr/sbin/ntpd -p /var/run/ntpd.pid -4 -g -u 106:113
Mar 03 06:36:13 FD50-AE ntpd[2090]: Soliciting pool server 209.115.181.1
Mar 03 06:36:34 FD50-AE ntpd[2090]: Soliciting pool server 45.33.2.219
Mar 03 06:36:38 FD50-AE ntpd[2090]: Soliciting pool server 64.79.100.197
Mar 03 06:36:55 FD50-AE ntpd[2090]: Soliciting pool server 91.189.91.157
Mar 03 06:37:20 FD50-AE ntpd[2090]: Soliciting pool server 149.56.47.60
Mar 03 06:37:20 FD50-AE ntpd[2090]: bind(19) AF_INET 127.0.0.1#123 flags
Mar 03 06:37:20 FD50-AE ntpd[2090]: unable to create socket on lo (212)
Mar 03 06:37:20 FD50-AE ntpd[2090]: failed to init interface for address
Mar 03 06:37:38 FD50-AE ntpd[2090]: Soliciting pool server 45.63.54.13
Mar 03 06:37:43 FD50-AE ntpd[2090]: Soliciting pool server 173.255.140.3
[1]+ Stopped sudo service ntp status
$ ntpstat
unsynchronised
polling server every 8 s
$ timedatectl
Local time: Tue 2020-03-03 06:58:34 EST
Universal time: Tue 2020-03-03 11:58:34 UTC
RTC time: Tue 2020-03-03 11:58:34
Time zone: America/New_York (EST, -0500)
System clock synchronized: no
systemd-timesyncd.service active: no
RTC in local TZ: no
$ ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
0.north-america .POOL. 16 p - 64 0 0.000 0.000 0.000
1.north-america .POOL. 16 p - 64 0 0.000 0.000 0.000
2.north-america .POOL. 16 p - 64 0 0.000 0.000 0.000
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 0.000 0.000
$
$ sudo systemctl status systemd-timesyncd.service
● systemd-timesyncd.service - Network Time Synchronization
Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:systemd-timesyncd.service(8)
下面是我的 ntp.conf：
#interface listen IPv4
#interface ignore IPv6
interface ignore wildcard
# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
driftfile /var/lib/ntp/ntp.drift
# Leap seconds definition provided by tzdata
leapfile /usr/share/zoneinfo/leap-seconds.list
# 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.
#pool 0.ubuntu.pool.ntp.org iburst
#pool 1.ubuntu.pool.ntp.org iburst
#pool 2.ubuntu.pool.ntp.org iburst
#pool 3.ubuntu.pool.ntp.org iburst
pool 0.north-america.pool.ntp.org iburst
pool 1.north-america.pool.ntp.org iburst
pool 2.north-america.pool.ntp.org iburst
# Use Ubuntu's ntp server as a fallback.
pool 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
# 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 limited
restrict -6 default kod notrap nomodify nopeer noquery limited
# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1
# Needed for adding pool entries
restrict source notrap nomodify noquery
# 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
#Changes recquired to use pps synchonisation as explained in documentation:
#http://www.ntp.org/ntpfaq/NTP-s-config-adv.htm#AEN3918
#server 127.127.8.1 mode 135 prefer # Meinberg GPS167 with PPS
#fudge 127.127.8.1 time1 0.0042 # relative to PPS for my hardware
#server 127.127.22.1 # ATOM(PPS)
#fudge 127.127.22.1 flag3 1 # enable PPS API
【问题讨论】：
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Id' 建议在unix.stackexchange.com提出这个问题
标签： ubuntu-18.04 ntp