#!/bin/bash
function rr(){
rsync -aSH --delete -e ‘ssh‘ /usr/local/hadoop/etc/hadoop $1:/usr/local/hadoop/etc/
rsync -a --delete -e ‘ssh‘ /etc/hosts $1:/etc/hosts
}
if (( $# == 0 ));then
echo "用法：$0 host1 host2 host3 ...."
else
for ((i=1;i<=$#;i++));
do
rr ${!i}用rsync同步本地DNS和Hadoop给Datanode主机
原文：http://blog.51cto.com/13587169/2091974
