# 同步使用的端口
acquisitionport 1123

# 存储 Server 时间的本地目录
dumpdir /var/run/chrony

# Ignore stratum in source selection.
stratumweight 0.01

# Record the rate at which the system clock gains/losses time.
driftfile /var/lib/chrony/drift

# 闰秒配置,17h34m 消化 1s
leapsecmode slew
maxslewrate 1000
smoothtime 400 0.001 leaponly

# In first three updates step the system clock instead of slew
# if the adjustment is larger than 10 seconds.
# makestep 0.1 3

## Server config
# Allow NTP client access from local network.
allow 0.0.0.0/0

# Listen for commands only on localhost.
bindaddress 0.0.0.0
port 123
clientloglimit 1073741824
#ratelimit interval 1
#ratelimit burst 16
# Serve time even if not synchronized to any NTP server.
local stratum 5

## Command config
bindcmdaddress 127.0.0.1
bindcmdaddress /var/run/chrony/chronyd.sock
cmdallow all

## Real Time clock(RTC)
hwclockfile /etc/adjtime
rtcautotrim 10
rtcsync

keyfile /etc/chrony.keys

# Specify the key used as password for chronyc.
commandkey 1

# Generate command key if missing.
generatecommandkey

## Log
# Send a message to syslog if a clock adjustment is larger than 0.5 seconds.
logchange 0.1
log measurements statistics tracking
logdir /var/log/chrony

# Server 配置
#ip address is the stable clock source which customer provided
server ntp.aliyun.com iburst minpoll 4 maxpoll 6 prefer