[linux]通过ssh远程设定各服务器时间，从而实现集群时间同步

#!/usr/bin/env bash
 
#all hosts should to  sync time, all hosts should no password login echo other
 
synchosts_array=("xufeng-1" "xufeng-2")
 
#currnt time in this host
 
currentDay=`date "+%Y-%m-%d"`
 
currentTime=`date "+%H:%M:%S"`
 
echo "current day in this host is "
 
echo $currentDay
 
echo "current time in this host is "
 
echo $currentTime
 
#loop host to set time
 
for hostname in ${synchosts_array[*]}
 
do
 
    echo $hostname
 
    ssh -t $hostname bash -c "'date -s '$currentDay' &&hwclock --systohc'"
 
    ssh -t $hostname bash -c "'date -s '$currentTime' &&hwclock --systohc'"
 
done

在某个节点上配置任务调度周期即可：

crontab -u root -e

*/ * * * * /opt/software/rootbin/synctime.sh >> /opt/software/rootbin/synctime.log

每分钟执行一次。