rtc测试
同步时间到RTC测试
最开始时间
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:02:12 CST
Universal time: Thu 2023-06-29 04:02:12 UTC
RTC time: Thu 2023-06-29 12:02:12
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*203.107.6.88 100.107.25.114 2 u 50 64 3 45.393 40.465 2.529
120.25.115.20 .INIT. 16 u - 64 0 0.000 0.000 0.000
[root@localhost ~]#
手动修改系统时间，再同步到硬件时间
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:02:12 CST
Universal time: Thu 2023-06-29 04:02:12 UTC
RTC time: Thu 2023-06-29 12:02:12
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*203.107.6.88 100.107.25.114 2 u 50 64 3 45.393 40.465 2.529
120.25.115.20 .INIT. 16 u - 64 0 0.000 0.000 0.000
[root@localhost ~]# date -s "12:00"
Thu Jun 29 12:00:00 CST 2023
[root@localhost ~]# date
Thu Jun 29 12:00:02 CST 2023
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:00:10 CST
Universal time: Thu 2023-06-29 04:00:10 UTC
RTC time: Thu 2023-06-29 12:03:57
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*203.107.6.88 100.107.25.114 2 u 19 64 7 45.393 40.465 2.529
120.25.115.20 10.137.53.7 2 u 4971 64 1 44.223 22.577 0.000
[root@localhost ~]# ntpdate -d -u 203.107.6.88
29 Jun 12:00:34 ntpdate[1805]: ntpdate 4.2.6p5@1.2349-o Tue Jun 23 15:38:19 UTC 2020 (1)
Looking for host 203.107.6.88 and service ntp
host found : 203.107.6.88
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
server 203.107.6.88, port 123
stratum 2, precision -25, leap 00, trust 000
refid [203.107.6.88], delay 0.06520, dispersion 0.00017
transmitted 4, in filter 4
reference time: e8478145.2561b834 Thu, Jun 29 2023 12:04:21.146
originate timestamp: e847814b.f1c22734 Thu, Jun 29 2023 12:04:27.944
transmit timestamp: e8478068.d026870a Thu, Jun 29 2023 12:00:40.813
filter delay: 0.06610 0.06572 0.06520 0.06525
0.00000 0.00000 0.00000 0.00000
filter offset: 227.1122 227.1116 227.1115 227.1113
0.000000 0.000000 0.000000 0.000000
delay 0.06520, dispersion 0.00017
offset 227.111539
29 Jun 12:00:40 ntpdate[1805]: step time server 203.107.6.88 offset 227.111539 sec
[root@localhost ~]# hwclock -w
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:01:10 CST
Universal time: Thu 2023-06-29 04:01:10 UTC
RTC time: Thu 2023-06-29 12:01:10
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
修正系统时间
29 Jun 12:01:41 ntpdate[1828]: step time server 203.107.6.88 offset 227.108131 sec
[root@localhost ~]# ntpdate 203.107.6.88
29 Jun 12:01:54 ntpdate[1832]: the NTP socket is in use, exiting
[root@localhost ~]# ntpdate -u 203.107.6.88
29 Jun 12:06:00 ntpdate[1833]: step time server 203.107.6.88 offset 227.102268 sec
[root@localhost ~]# ntpdate -d -u 203.107.6.88
29 Jun 12:06:09 ntpdate[1834]: ntpdate 4.2.6p5@1.2349-o Tue Jun 23 15:38:19 UTC 2020 (1)
Looking for host 203.107.6.88 and service ntp
host found : 203.107.6.88
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
transmit(203.107.6.88)
receive(203.107.6.88)
server 203.107.6.88, port 123
stratum 2, precision -25, leap 00, trust 000
refid [203.107.6.88], delay 0.07175, dispersion 0.00041
transmitted 4, in filter 4
reference time: e8478184.a94692b2 Thu, Jun 29 2023 12:05:24.661
originate timestamp: e84781b7.6bfa52ff Thu, Jun 29 2023 12:06:15.421
transmit timestamp: e84781b7.65b914f8 Thu, Jun 29 2023 12:06:15.397
filter delay: 0.11670 0.07175 0.07175 0.07193
0.00000 0.00000 0.00000 0.00000
filter offset: 0.000994 0.001967 0.001668 0.001262
0.000000 0.000000 0.000000 0.000000
delay 0.07175, dispersion 0.00041
offset 0.001967
29 Jun 12:06:15 ntpdate[1834]: adjust time server 203.107.6.88 offset 0.001967 sec
rtc时间不一致环境已经构建好
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:06:51 CST
Universal time: Thu 2023-06-29 04:06:51 UTC
RTC time: Thu 2023-06-29 12:03:04
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
方法1：/etc/sysconfig/ntpd
修改
[root@localhost ~]# vim /etc/sysconfig/ntpd
[root@localhost ~]# systemctl restart ntpd ^C
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:13 CST
Universal time: Thu 2023-06-29 04:09:13 UTC
RTC time: Thu 2023-06-29 12:05:26
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# systemctl restart ntpd
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:27 CST
Universal time: Thu 2023-06-29 04:09:27 UTC
RTC time: Thu 2023-06-29 12:05:40
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:29 CST
Universal time: Thu 2023-06-29 04:09:29 UTC
RTC time: Thu 2023-06-29 12:05:42
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:30 CST
Universal time: Thu 2023-06-29 04:09:30 UTC
RTC time: Thu 2023-06-29 12:05:43
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:32 CST
Universal time: Thu 2023-06-29 04:09:32 UTC
RTC time: Thu 2023-06-29 12:05:45
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:33 CST
Universal time: Thu 2023-06-29 04:09:33 UTC
RTC time: Thu 2023-06-29 12:05:45
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:09:33 CST
Universal time: Thu 2023-06-29 04:09:33 UTC
RTC time: Thu 2023-06-29 12:05:45
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:13:20 CST
Universal time: Thu 2023-06-29 04:13:20 UTC
RTC time: Thu 2023-06-29 12:13:20
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]#
有效果
重新测试
[root@localhost ~]# date -s "12:00"
Thu Jun 29 12:00:00 CST 2023
[root@localhost ~]# hwclock -w
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:00:12 CST
Universal time: Thu 2023-06-29 04:00:12 UTC
RTC time: Thu 2023-06-29 12:00:12
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
同步系统时间
[root@localhost ~]# ntpdate -u 203.107.6.88
29 Jun 12:19:21 ntpdate[1900]: step time server 203.107.6.88 offset 1098.176945 sec
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:19:23 CST
Universal time: Thu 2023-06-29 04:19:23 UTC
RTC time: Thu 2023-06-29 12:01:05
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]#
观察一段时间后
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:28:58 CST
Universal time: Thu 2023-06-29 04:28:58 UTC
RTC time: Thu 2023-06-29 12:10:40
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
重启ntpd服务之后在观察
[root@localhost ~]# systemctl restart ntpd
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:29:33 CST
Universal time: Thu 2023-06-29 04:29:33 UTC
RTC time: Thu 2023-06-29 12:11:15
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:29:34 CST
Universal time: Thu 2023-06-29 04:29:34 UTC
RTC time: Thu 2023-06-29 12:11:16
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:29:35 CST
Universal time: Thu 2023-06-29 04:29:35 UTC
RTC time: Thu 2023-06-29 12:11:17
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:32:14 CST
Universal time: Thu 2023-06-29 04:32:14 UTC
RTC time: Thu 2023-06-29 12:32:14
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:32:16 CST
Universal time: Thu 2023-06-29 04:32:16 UTC
RTC time: Thu 2023-06-29 12:32:16
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:32:17 CST
Universal time: Thu 2023-06-29 04:32:17 UTC
RTC time: Thu 2023-06-29 12:32:17
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:32:18 CST
Universal time: Thu 2023-06-29 04:32:18 UTC
RTC time: Thu 2023-06-29 12:32:18
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]#
重启之后有效
测试去掉参数
[root@localhost ~]# cat /etc/sysconfig/ntpd
# Command line options for ntpd
OPTIONS="-g"
#SYNC_HWCLOCK=yes
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:33:35 CST
Universal time: Thu 2023-06-29 04:33:35 UTC
RTC time: Thu 2023-06-29 12:33:35
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# date -s "12:20"
Thu Jun 29 12:20:00 CST 2023
[root@localhost ~]# hwclock -w
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:20:14 CST
Universal time: Thu 2023-06-29 04:20:14 UTC
RTC time: Thu 2023-06-29 12:20:15
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# ntpdate -u 203.107.6.88
29 Jun 12:34:23 ntpdate[1990]: step time server 203.107.6.88 offset 831.497776 sec
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:34:32 CST
Universal time: Thu 2023-06-29 04:34:32 UTC
RTC time: Thu 2023-06-29 12:20:41
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]#
观察一段时间
[root@localhost ~]# date -s "12:20"
Thu Jun 29 12:20:00 CST 2023
[root@localhost ~]# hwclock -w
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:20:14 CST
Universal time: Thu 2023-06-29 04:20:14 UTC
RTC time: Thu 2023-06-29 12:20:15
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# ntpdate -u 203.107.6.88
29 Jun 12:34:23 ntpdate[1990]: step time server 203.107.6.88 offset 831.497776 sec
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:34:32 CST
Universal time: Thu 2023-06-29 04:34:32 UTC
RTC time: Thu 2023-06-29 12:20:41
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: no
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# systemctl restart ntpd
[root@localhost ~]# systemctl status ntpd
● ntpd.service - Network Time Service
Loaded: loaded (/usr/lib/systemd/system/ntpd.service; disabled; vendor preset: disabled)
Active: active (running) since Thu 2023-06-29 12:35:06 CST; 6s ago
Process: 2004 ExecStart=/usr/sbin/ntpd -u ntp:ntp $OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 2005 (ntpd)
CGroup: /system.slice/ntpd.service
└─2005 /usr/sbin/ntpd -u ntp:ntp -g
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen and drop on 0 v4wildcard 0.0.0.0 UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen and drop on 1 v6wildcard :: UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen normally on 2 lo 127.0.0.1 UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen normally on 3 ens33 192.168.12.29 UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen normally on 4 lo ::1 UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listen normally on 5 ens33 fe80::3078:750b:dcf7:d446 UDP 123
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: Listening on routing socket on fd #22 for interface updates
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: 0.0.0.0 c016 06 restart
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: 0.0.0.0 c012 02 freq_set kernel 0.000 PPM
Jun 29 12:35:06 localhost.localdomain ntpd[2005]: 0.0.0.0 c011 01 freq_not_set
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:14 CST
Universal time: Thu 2023-06-29 04:35:14 UTC
RTC time: Thu 2023-06-29 12:21:23
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:15 CST
Universal time: Thu 2023-06-29 04:35:15 UTC
RTC time: Thu 2023-06-29 12:21:24
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:16 CST
Universal time: Thu 2023-06-29 04:35:16 UTC
RTC time: Thu 2023-06-29 12:21:25
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:17 CST
Universal time: Thu 2023-06-29 04:35:17 UTC
RTC time: Thu 2023-06-29 12:21:26
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:18 CST
Universal time: Thu 2023-06-29 04:35:18 UTC
RTC time: Thu 2023-06-29 12:21:27
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 12:35:19 CST
Universal time: Thu 2023-06-29 04:35:19 UTC
RTC time: Thu 2023-06-29 12:21:27
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 13:17:08 CST
Universal time: Thu 2023-06-29 05:17:08 UTC
RTC time: Thu 2023-06-29 13:17:07
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
[root@localhost ~]# timedatectl
Local time: Thu 2023-06-29 13:17:10 CST
Universal time: Thu 2023-06-29 05:17:10 UTC
RTC time: Thu 2023-06-29 13:17:10
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes
NTP synchronized: yes
RTC in local TZ: yes
DST active: n/a
Warning: The system is configured to read the RTC time in the local time zone.
This mode can not be fully supported. It will create various problems
with time zone changes and daylight saving time adjustments. The RTC
time is never updated, it relies on external facilities to maintain it.
If at all possible, use RTC in UTC by calling
'timedatectl set-local-rtc 0'.
