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NTP Server

yxbinghe • 7小时前 • Daily, Linux

https://mp.weixin.qq.com/s/LQnLSt85etWm1G4-aH_jug
https://mp.weixin.qq.com/s/psuY8B26lsgOnhQHMtOiGQ

# cat /etc/chrony.conf
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (https://www.pool.ntp.org/join.html).
# pool pool.ntp.org iburst
server ntp.aliyun.com iburst
server time1.cloud.tencent.com iburst

# 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 10.23.0.0/16
allow 192.168.0.0/16

# Serve time even if not synchronized to a time source.
local stratum 10

# Require authentication (nts or key option) for all NTP sources.
#authselectmode require

# Specify file containing keys for NTP authentication.
#keyfile /etc/chrony.keys

# Save NTS keys and cookies.
ntsdumpdir /var/lib/chrony

# Insert/delete leap seconds by slewing instead of stepping.
#leapsecmode slew

# Get TAI-UTC offset and leap seconds from the system tz database.
#leapsectz right/UTC

# Specify directory for log files.
logdir /var/log/chrony

# Select which information is logged.
#log measurements statistics tracking

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作者：yxbinghe
链接：https://www.zhanhao.ch/?p=615
来源：ice.99
文章版权归作者所有，未经允许请勿转载。

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yxbinghe

cat /etc/chrony.conf
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (https://www.pool.ntp.org/join.html).
# pool pool.ntp.org iburst
server ntp.aliyun.com iburst
server time1.cloud.tencent.com iburst

# 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 10.23.0.0/16
allow 192.168.0.0/16

# Serve time even if not synchronized to a time source.
local stratum 10

# Require authentication (nts or key option) for all NTP sources.
#authselectmode require

# Specify file containing keys for NTP authentication.
#keyfile /etc/chrony.keys

# Save NTS keys and cookies.
ntsdumpdir /var/lib/chrony

# Insert/delete leap seconds by slewing instead of stepping.
#leapsecmode slew

# Get TAI-UTC offset and leap seconds from the system tz database.
#leapsectz right/UTC

# Specify directory for log files.
logdir /var/log/chrony

# Select which information is logged.
#log measurements statistics tracking
[root@en_58 ~]# ssh root@10.23.120.124
Last login: Sat Dec 27 15:40:52 2025 from 10.23.116.60
[root@120124 ~]# 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).
server 10.23.116.58 iburst prefer
server 10.23.116.60 iburst

# 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

2025-12-28 22:56 回复
1. yxbinghe@yxbinghe
  
  server 10.23.116.58 iburst prefer
  server 10.23.116.60 iburst
  
  # =========================
  # 上游：唯一权威时间源
  # =========================
  server 192.168.1.58 iburst prefer
  
  # =========================
  # 本机作为 NTP Server
  # =========================
  allow 192.168.101.0/24
  
  # 本地时钟兜底（防止上游短暂不可达）
  local stratum 10
  
  # 稳定性优化（非常重要）
  makestep 1.0 3
  maxupdateskew 100.0
  
  # 日志
  logdir /var/log/chrony
  
  prefer：避免选错源
  
  makestep：允许步进，适合 Android
  
  local stratum：防止服务挂死
  
  2025-12-28 22:57 回复
  1. yxbinghe@yxbinghe
    
    二级服务器
    
    2025-12-28 23:18 回复
  2. yxbinghe@yxbinghe
    
    server 10.23.116.58 iburst
    local stratum 10
    allow 本子网
    
    2025-12-28 23:40 回复
yxbinghe

server 127.127.1.0 mode 10 # 127.127.1.0 是一个特殊的地址，代表本地串行端口
fudge 127.127.1.0 stratum 0 # 将其设为最高优先级（Stratum 0）

system-view
sysname H3C-Switch

# 基础配置
clock timezone Beijing add 08:00:00
ntp-service enable

# 配置NTP服务器
ntp-service unicast-server ntp.aliyun.com
ntp-service unicast-server 120.25.115.20
ntp-service unicast-server 203.107.6.88

#同步时间
clock protocol ntp

# 配置认证（如果需要）
ntp-service authentication enable
ntp-service authentication-keyid 42 md5 YourPassword123
ntp-service reliable authentication-keyid 42

# 配置本地时钟备用
ntp-service refclock-master 8

# 保存配置
save force

2025-12-28 22:57 回复
1. yxbinghe@yxbinghe
  
  sysname Core-Center
  #
  clock timezone Beijing add 08:00:00
  clock protocol ntp
  
  #
  ntp-service enable
  ntp-service server acl 2000
  ntp-service peer acl 2000
  ntp-service synchronization acl 2000
  ntp-service refclock-master 4
  ntp-service unicast-server 172.20.42.118 priority
  #
  acl number 2000
  rule 0 permit source 172.20.0.0 0.0.255.255
  #
  
  2025-12-28 23:02 回复
  1. yxbinghe@yxbinghe
    
    system-view
    # 开启NTP服务（默认已开启）
    ntp-service enable
    
    # 设置时区（中国标准时间）
    clock timezone Beijing add 08:00:00
    
    # 配置主NTP服务器
    ntp-service unicast-server 192.168.1.100 # 示例IP，替换为实际NTP服务器
    ntp-service unicast-server 120.25.115.20 # 阿里云NTP服务器
    ntp-service unicast-server ntp.aliyun.com # 域名方式
    
    # 配置备选NTP服务器
    ntp-service unicast-server 203.107.6.88 # 阿里云备用NTP
    ntp-service unicast-server cn.pool.ntp.org # NTP池服务器
    
    # 可选
    # 启用NTP认证
    ntp-service authentication enable
    
    ## 实例
    
    system-view
    sysname H3C-Switch
    
    # 基础配置
    clock timezone Beijing add 08:00:00
    ntp-service enable
    
    # 配置NTP服务器
    ntp-service unicast-server ntp.aliyun.com
    ntp-service unicast-server 120.25.115.20
    ntp-service unicast-server 203.107.6.88
    
    # 配置认证（如果需要）
    ntp-service authentication enable
    ntp-service authentication-keyid 42 md5 YourPassword123
    ntp-service reliable authentication-keyid 42
    
    # 配置本地时钟备用
    ntp-service refclock-master 8
    
    # 保存配置
    save force
    
    # 配置密钥
    ntp-service authentication-keyid 42 md5 Hello123
    
    # 配置可信密钥
    ntp-service reliable authentication-keyid 42
    
    # 为服务器配置认证
    ntp-service unicast-server 192.168.1.100 authentication-keyid 42
    
    2025-12-28 23:16 回复
2. yxbinghe@yxbinghe
  
  # 查看NTP服务状态
  display ntp-service status
  
  # 查看NTP会话
  display ntp-service sessions
  
  # 查看NTP服务器列表
  display ntp-service peers
  
  # 查看NTP统计信息
  display ntp-service statistics
  
  # 查看当前时间
  display clock
  
  # 查看NTP详细状态
  display ntp-service status verbose
  
  # 查看NTP关联状态
  display ntp-service associations
  
  2025-12-28 23:11 回复
yxbinghe

// 设置中国时区

adb shell setprop persist.sys.timezone Asia/Shanghai

// 设置 NTP 服务器

adb shell settings put global ntp_server 10.23.116.58

//时间同步不生效的话可以先删去原来的ntp服务器
adb shell settings delete global ntp_server

2025-12-28 23:00 回复
1. yxbinghe@yxbinghe
  
  am broadcast -a com.android.server.action.NTP_TIME_SYNC –ez force true
  或：
  settings put global ntp_server 边缘NTPIP
  settings put global auto_time 1
  
  2025-12-28 23:42 回复