目錄centos7安裝chronyd服務Centos7使用chronyd進行時鐘同步安裝配置文件啟動服務及時區(qū)設置驗證服務手動同步時間手動設置時間總結centos7安裝chronyd服務

一、雙節(jié)點部署:

ip主機名192.168.100.10controller192.168.100.20compute

二、配置時間同步

1、雙節(jié)點安裝chrony服務（這里是使用本地的軟件包進行yum安裝）

[root@controller ~]# yum install -y chrony[root@compute ~]# yum install -y chrony

2、controller修改chrony服務配置文件（在/etc/chrony.conf目錄下）

[root@controller ~]# vi /etc/chrony.conf # Use public servers from the pool.ntp.org project.# Please consider joining the pool (http://www.pool.ntp.org/join.html).#server 0.centos.pool.ntp.org iburst //添加#號#server 1.centos.pool.ntp.org iburst //添加#號#server 2.centos.pool.ntp.org iburst //添加#號#server 3.centos.pool.ntp.org iburst //添加#號server controller iburst //添加這一行# Record the rate at which the system clock gains/losses time.driftfile /var/lib/chrony/drift# Allow the system clock to be stepped in the first three updates# if its offset is larger than 1 second.makestep 1.0 3# Enable kernel synchronization of the real-time clock (RTC).rtcsync# Enable hardware timestamping on all interfaces that support it.#hwtimestamp *# Increase the minimum number of selectable sources required to adjust# the system clock.#minsources 2# Allow NTP client access from local network.allow all //去掉#號# Serve time even if not synchronized to a time source.local stratum 10 //去掉#號# Specify file containing keys for NTP authentication.#keyfile /etc/chrony.keys# Specify directory for log files.logdir /var/log/chrony# Select which information is logged.#log measurements statistics tracking

3、compute 修改chrony配置文件

[root@compute ~]# vi /etc/chrony.conf # Use public servers from the pool.ntp.org project.# Please consider joining the pool (http://www.pool.ntp.org/join.html).#server 0.centos.pool.ntp.org iburst#server 1.centos.pool.ntp.org iburst#server 2.centos.pool.ntp.org iburst#server 3.centos.pool.ntp.org iburstserver 192.168.100.10 iburst //添加這一行# Record the rate at which the system clock gains/losses time.driftfile /var/lib/chrony/drift# Allow the system clock to be stepped in the first three updates# if its offset is larger than 1 second.makestep 1.0 3# Enable kernel synchronization of the real-time clock (RTC).rtcsync# Enable hardware timestamping on all interfaces that support it.#hwtimestamp *# Increase the minimum number of selectable sources required to adjust# the system clock.#minsources 2# Allow NTP client access from local network.#allow 192.168.0.0/16# Serve time even if not synchronized to a time source.#local stratum 10# Specify file containing keys for NTP authentication.#keyfile /etc/chrony.keys# Specify directory for log files.logdir /var/log/chrony# Select which information is logged.#log measurements statistics tracking

4、雙節(jié)點重啟服務，并設置開機自啟

[root@controller ~]# systemctl restart chronyd && systemctl enable chronyd[root@compute ~]# systemctl restart chronyd && systemctl enable chronyd

5、controller開啟ntp同步

[root@controller ~]# timedatectl set-ntp true

6、雙節(jié)點執(zhí)行chronyc sources命令，結果中存在以^*開頭的行，則同步成功

[root@controller ~]# chronyc sources210 Number of sources = 1MS Name/IP address Stratum Poll Reach LastRx Last sample ===============================================================================^* controller 10 6 377 27 +186ns[-8404ns] +/- 17us[root@compute ~]# chronyc sources210 Number of sources = 1MS Name/IP address Stratum Poll Reach LastRx Last sample ===============================================================================^* controller 10 6 17 34 -4280ns[ -13us] +/- 328usCentos7使用chronyd進行時鐘同步

最近要做阿里云遷移 IDC 機房，整理下 Linux 運維基線，簡單記錄，以備后用~

安裝# 默認已經安裝$ yum install -y chrony配置文件$ cat /etc/chrony.conf# Use public servers from the pool.ntp.org project.# Please consider joining the pool (http://www.pool.ntp.org/join.html).# 國家服務器server 0.cn.pool.ntp.orgserver 1.cn.pool.ntp.orgserver 2.cn.pool.ntp.orgserver 3.cn.pool.ntp.org# 阿里server ntp.aliyun.com# 騰訊server time1.cloud.tencent.comserver time2.cloud.tencent.comserver time3.cloud.tencent.comserver time4.cloud.tencent.comserver time5.cloud.tencent.com# 蘋果server time.asia.apple.com# 微軟server time.windows.com# 其他server cn.ntp.org.cn# Record the rate at which the system clock gains/losses time.driftfile /var/lib/chrony/drift# Allow the system clock to be stepped in the first three updates# if its offset is larger than 1 second.makestep 1.0 3# Enable kernel synchronization of the real-time clock (RTC).rtcsync# Enable hardware timestamping on all interfaces that support it.#hwtimestamp *# Increase the minimum number of selectable sources required to adjust# the system clock.#minsources 2# Allow NTP client access from local network.#allow 192.168.0.0/16# Serve time even if not synchronized to a time source.#local stratum 10# Specify file containing keys for NTP authentication.#keyfile /etc/chrony.keys# Specify directory for log files.logdir /var/log/chrony# Select which information is logged.#log measurements statistics tracking啟動服務及時區(qū)設置# 啟動服務$ systemctl start chronyd# 開機啟動$ systemctl enable chronyd# 查看當前狀態(tài)$ systemctl status chronyd# 查看亞洲時區(qū)$ timedatectl list-timezones | grep Asia# 設置時區(qū)$ timedatectl set-timezone Asia/Shanghai驗證服務# 查看現(xiàn)有的時間服務器$ chronyc sources -v# 查看時間服務器狀態(tài)$ chronyc sourcestats -v# 顯示時鐘同步相關參數(shù)$ chronyc tracking# 查看當前時區(qū)及時間$ timedatectl?手動同步時間# 使用 ntpdate 同步時間$ ntpdate ntp.aliyun.com# chronyd 未啟動時，如下命令同步時間$ chronyd -q 'server pool.ntp.org iburst'# chronyd 啟動時，使用如下命令同步時間$ chronyc -a 'burst 4/4' && sleep 10 && chronyc -a makestep手動設置時間# date 設置時間$ date -s '2021-06-03 19:00:00'# 關閉 ntp 同步后，才可以使用 timedatectl 進行時間設置$ timedatectl set-ntp false# 設置日期和時間$ timedatectl set-time '2021-06-03 19:00:00'# 設置日期$ timedatectl set-time '2021-06-03'# 設置時間$ timedatectl set-time '19:00:00'# 設置完成后，再開啟$ timedatectl set-ntp true總結

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