[root@bj-1 mysql]# cat /etc/sysconfig/ntpdate mysql
# Options for ntpdatesql
OPTIONS="-U ntp -s -b"网络
# Number of retries before giving upide
RETRIES=2server
# Set to 'yes' to sync hw clock after successful ntpdate同步
SYNC_HWCLOCK=yesit
[root@bj-1 mysql]# cat /etc/ntp/step-tickers io
# List of servers used for initial synchronization.class
172.230.156.201sed
#这种方式是在内网全部机器指向201,201上在去网络上同步时间,属于一主多从ntp模式