该脚本分成三部分，一部分是获取信息的脚本：getInfo.sh 一个是main脚本：main.sh、一个是ssh连接主机脚本：sshing.sh

注: 该脚本存在缺陷，也远远比不上专门的部署软件，大家看看图一乐呵，交流交流技术就行啦！

main.sh

#是否检查主机是否存活
host_check=`cat ./install.command | grep "ENABLE" | cut -d"=" -f2`
#从哪个主机开始发送命令
start_host=`cat ./install.command | grep "START" | cut -d"=" -f2` 
#结束的主机
end_host=`cat ./install.command | grep "END" | cut -d"=" -f2`
#其他主机root的密码
default_passwd=`cat ./install.command | grep "PASSWD" | cut -d"=" -f2`
#要执行的命令

command=`cat ./install.command | grep "COMMAND" | cut -d"=" -f2`

echo "the start host: $start_host"
echo "the end host: $end_host"
echo "check the host? $host_check"


#if check the host
if [ $host_check = yes ]
then
while [ $start_host -le $end_host ]
  do
      hostname="192.168.3.$start_host"
      ping -c 1 $hostname
      start_host=$[$start_host+1]
  done
   
. ./getinfo.sh

onlyip=()

#去重
for i in "${live_host[@]}"
 do
  if [ ${#onlyip[*]} -eq 0 ]
   then 
     onlyip[ ${#onlyip[*]} ]=$i
   else

     index=1
     for op in "${onlyip[@]}"
      do 
       if [ "$i" = "$op" ]
        then
         break
       fi

       if [ $index -eq ${#onlyip[*]} ]
          then 
           onlyip[ ${#onlyip[*]} ]=$i
           break
       fi
       
       index=$[$index+1]
     done
   fi
done

echo "the live host: "
echo "${onlyip[@]}"


echo "start run!!!!"
for ip in "${onlyip[@]}"
do
     . ./sshing.sh
done
echo "end"
else
echo "start run!!!!"
while [ $start_host -le $end_host ]
 do
   ip="192.168.3.$start_host"
   . ./sshing.sh
   start_host=$[$start_host+1]
 done
echo "end"
fi

sshing.sh

/usr/bin/expect <<EOF
            spawn ssh -o "StrictHostKeyChecking no" root@$ip
            expect "password:"
            send "$default_passwd\r"
            expect "#"
            send "$command\r"
            expect "#"
            send "exit\r"
            expect eof
        EOF

getinfo.sh

#将存活的主机ip存在数组中
live_host=(`sudo cat /var/log/kern | grep "Live-host" | grep "SRC=" | awk {'print $9'} | cut -d"=" -f2`)

这仨脚本放一个文件夹就行，有问题请留言！