電子發(fā)燒友App
一、使用 NTP 服務時間同步
安裝 ntp
[root@node?~]#?yum?-y?install?ntp
啟動 ntp 服務
[root@node?~]#?systemctl?start??ntpd [root@node?~]#?systemctl?enable??ntpd Created?symlink?from?/etc/systemd/system/multi-user.target.wants/ntpd.service?to?/usr/lib/systemd/system/ntpd.service.
查看 ntp 服務
[root@node?~]#?systemctl?status?ntpd ●?ntpd.service?-?Network?Time?Service ???Loaded:?loaded?(/usr/lib/systemd/system/ntpd.service;?enabled;?vendor?preset:?disabled) ???Active:?active?(running)?since?Thu?2022-08-04?0847?CST;?7h?left ?Main?PID:?20746?(ntpd) ????Tasks:?1 ???Memory:?768.0K ???CGroup:?/system.slice/ntpd.service ???????????└─20746?/usr/sbin/ntpd?-u?ntp:ntp?-g Aug?04?0847?node?ntpd[20746]:?Listen?normally?on?6?lo?::1?UDP?123 Aug?04?0847?node?ntpd[20746]:?Listen?normally?on?7?ens33?fe80:72979934?UDP?123 Aug?04?0847?node?ntpd[20746]:?Listening?on?routing?socket?on?fd?#24?for?interface?updates Aug?04?0847?node?systemd[1]:?Started?Network?Time?Service. Aug?04?0847?node?ntpd[20746]:?0.0.0.0?c016?06?restart Aug?04?0847?node?ntpd[20746]:?0.0.0.0?c012?02?freq_set?kernel?0.000?PPM Aug?04?0847?node?ntpd[20746]:?0.0.0.0?c011?01?freq_not_set Aug?04?0856?node?ntpd[20746]:?0.0.0.0?c61c?0c?clock_step?-28798.353463?s Aug?04?0057?node?ntpd[20746]:?0.0.0.0?c614?04?freq_mode Aug?04?0058?node?ntpd[20746]:?0.0.0.0?c618?08?no_sys_peer
修改 ntp.conf 文件
[root@node?~]#?vim?/etc/ntp.conf [root@node?~]#?grep?server?/etc/ntp.conf? #?Use?public?servers?from?the?pool.ntp.org?project. #server?0.centos.pool.ntp.org?iburst server?ntp.aliyun.com?iburst #broadcast?192.168.1.255?autokey?#?broadcast?server #broadcast?224.0.1.1?autokey??#?multicast?server #manycastserver?239.255.254.254??#?manycast?server
重啟服務
[root@node?~]#?systemctl?restart?ntpd
檢查同步狀態(tài)
[root@node?~]#?ntpq?-p ?????remote???????????refid??????st?t?when?poll?reach???delay???offset??jitter ============================================================================== ?203.107.6.88????100.107.25.114???2?u????2???64????1???30.975??149.499???0.393
二、使用 ntpdate 同步
使用 ntpd 命令同步
[root@node?~]#?ntpdate?ntp.aliyun.com ?4?Aug?0017?ntpdate[20924]:?adjust?time?server?203.107.6.88?offset?-0.001543?sec
查看時間
[root@node?~]#?date Thu?Aug??4?0046?CST?2022
三、處理 ntpdate 同步失敗報錯處理方法
報錯信息
cna02:~?#?ntpdate?ntp1.aliyun.com ?4?Aug?0741?ntpdate[18694]:?the?NTP?socket?is?in?use,?exiting
處理方法
cna02:~?#?service?ntpd?stop Redirecting?to?/bin/systemctl?stop?ntpd.service
重新同步
cna02:~?#?ntpdate?ntp1.aliyun.com ?3?Aug?2336?ntpdate[28980]:?step?time?server?120.25.115.20?offset?-28911.609110?sec
查看時間是否正確
cna02:~?#?date Wed?Aug??3?2341?CST?2022
四、使用 chrony 服務時間同步
安裝 chrony
[root@node?~]#?yum?-y?install?chrony Loaded?plugins:?fastestmirror,?langpacks Loading?mirror?speeds?from?cached?hostfile ?*?base:?mirrors.bfsu.edu.cn ?*?extras:?mirrors.bfsu.edu.cn ?*?updates:?mirrors.bfsu.edu.cn Resolving?Dependencies -->?Running?transaction?check --->?Package?chrony.x86_64?0:3.2-2.el7?will?be?updated --->?Package?chrony.x86_64?0:3.4-1.el7?will?be?an?update -->?Finished?Dependency?Resolution Dependencies?Resolved =============================================================================================================================================================================== ?Package??????????????????????????????????Arch?????????????????????????????????????Version????????????????????????????????????????Repository??????????????????????????????Size =============================================================================================================================================================================== Updating: ?chrony???????????????????????????????????x86_64???????????????????????????????????3.4-1.el7??????????????????????????????????????base???????????????????????????????????251?k Transaction?Summary =============================================================================================================================================================================== Upgrade??1?Package Total?download?size:?251?k Downloading?packages: No?Presto?metadata?available?for?base chrony-3.4-1.el7.x86_64.rpm?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????|?251?kB??0000????? Running?transaction?check Running?transaction?test Transaction?test?succeeded Running?transaction ??Updating???:?chrony-3.4-1.el7.x86_64?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1/2? ??Cleanup????:?chrony-3.2-2.el7.x86_64?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????2/2? ??Verifying??:?chrony-3.4-1.el7.x86_64?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1/2? ??Verifying??:?chrony-3.2-2.el7.x86_64?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????2/2? Updated: ??chrony.x86_64?0:3.4-1.el7???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? Complete!
啟動 chrony 服務
[root@node?~]#?systemctl?enable?--now?chronyd Created?symlink?from?/etc/systemd/system/multi-user.target.wants/chronyd.service?to?/usr/lib/systemd/system/chronyd.service.
查看 chrony 狀態(tài)
[root@node?~]#?systemctl?status?chronyd ●?chronyd.service?-?NTP?client/server ???Loaded:?loaded?(/usr/lib/systemd/system/chronyd.service;?enabled;?vendor?preset:?enabled) ???Active:?active?(running)?since?Thu?2022-08-04?0027?CST;?29s?ago ?????Docs:?man:chronyd(8) ???????????man:chrony.conf(5) ??Process:?21136?ExecStartPost=/usr/libexec/chrony-helper?update-daemon?(code=exited,?status=0/SUCCESS) ??Process:?21132?ExecStart=/usr/sbin/chronyd?$OPTIONS?(code=exited,?status=0/SUCCESS) ?Main?PID:?21134?(chronyd) ????Tasks:?1 ???Memory:?364.0K ???CGroup:?/system.slice/chronyd.service ???????????└─21134?/usr/sbin/chronyd Aug?04?0027?node?systemd[1]:?Starting?NTP?client/server... Aug?04?0027?node?chronyd[21134]:?chronyd?version?3.4?starting?(+CMDMON?+NTP?+REFCLOCK?+RTC?+PRIVDROP?+SCFILTER?+SIGND?+ASYNCDNS?+SECHASH?+IPV6?+DEBUG) Aug?04?0027?node?systemd[1]:?Started?NTP?client/server. Aug?04?0035?node?chronyd[21134]:?Selected?source?193.182.111.141 Aug?04?0035?node?chronyd[21134]:?Source?78.46.102.180?replaced?with?94.237.64.20
修改配置文件
[root@node?~]#?grep?server?/etc/chrony.conf? #?Use?public?servers?from?the?pool.ntp.org?project. #server?0.centos.pool.ntp.org?iburst #server?1.centos.pool.ntp.org?iburst #server?3.centos.pool.ntp.org?iburst server?ntp1.aliyun.com?iburst
重啟服務
[root@node?~]#?systemctl?restart?chronyd
檢查時間同步狀態(tài)
[root@node?~]#?chronyc?sources 210?Number?of?sources?=?1 MS?Name/IP?address?????????Stratum?Poll?Reach?LastRx?Last?sample??????????????? =============================================================================== ^*?120.25.115.20?????????????????2???6????71????26???+751us[+1549us]?+/-???19ms
五、手動修改時間
修改時間方法 1
[root@node?~]#?date?-s?"2012-05-23?0101" Wed?May?23?0101?CST?2012 [root@node?~]#?date Wed?May?23?0105?CST?2012
修改時間方法 2
修改時間順序為月日時分年. 秒
[root@tianyi?~]#?date?090621282021.28 Mon?Sep??6?2128?CST?2021
硬件時間向系統(tǒng)時間同步
[root@node?~]#?hwclock?-w
按格式輸出時間
[root@node?~]#?date?"+%Y-%m-%d?%H:%M:%S" 2012-05-23?0110
設置時區(qū)
[root@tianyi?backups]#?timedatectl?list-timezones?|grep?Shanghai Asia/Shanghai [root@tianyi?backups]#?timedatectl?set-timezone?Asia/Shanghai編輯：黃飛
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