shell 脚本同时对远程多台机器执行命令

脚本1：需要机器之间免密

ssh-copy-id [-i [identity_file]] [user@]machine

#!/bin/bash
# -------------------------------------------------------------------------------
# Author:   Loya.Chen
# Description: Execute commands on multiple remote hosts at the same time.
# -------------------------------------------------------------------------------
set -e
Usage() {
  echo "Usage: $0 host1 host2 ... 'command'"
}
if [ $# -lt 2 ] ;then
  Usage
  exit 0
else
  cmd=${!#}
fi
logfile=$(mktemp)
i=1
success=0
failed=0
for ip in $@;do
  if [ $i -eq $# ];then
    break
  fi
  ssh $ip $cmd &> $logfile
  if [ $? -eq 0 ];then
    #((success++))
    success=$(($success+1))
    echo -e "
33[32m$ip | success 33[0m 
"
    cat $logfile
  else
    ((failed++))
    echo -e "
33[31m$ip | failed 33[0m
 "
    cat $logfile
  fi
  ((i++))
done
echo -e '
-------------------------'
echo -e "33[32msuccess: $success | failed: $failed 33[0m"
echo '-------------------------'

方法2：这种方式可以不用免密，但是需要在执行命令的机器用户名和密码一致

#!/bin/bash
# -------------------------------------------------------------------------------
# Author:   JiangTao.Yu
# Description: Execute commands on multiple remote hosts at the same time.
# -------------------------------------------------------------------------------
set -e
Usage() {
  echo "Usage: $0 host1 host2 ... 'command'"
}
if [ $# -lt 2 ] ;then
  Usage
  exit 0
else
  cmd=${!#}
fi
logfile=$(mktemp)
i=1
success=0
failed=0
for ip in $@;do
  if [ $i -eq $# ];then
    break
  fi
  sshpass -p "mypasswd" ssh -o "StrictHostKeyChecking no" hduser@$ip $cmd &> $logfile
  if [ $? -eq 0 ];then
    #((success++))
    success=$(($success+1))
    echo -e "
33[32m$ip | success 33[0m 
"
    cat $logfile
  else
    ((failed++))
    echo -e "
33[31m$ip | failed 33[0m
 "
    cat $logfile
  fi
  ((i++))
done
echo -e '
-------------------------'
echo -e "33[32msuccess: $success | failed: $failed 33[0m"
echo '-------------------------'

 方法3、从文件读取ip、username、passwd

#!/bin/bash
set -e
success=0
failed=0
while read  ip username passwd
do
   ip=$ip
   username=$username
   passwd=$passwd
   sshpass -p $passwd  ssh -n -o "StrictHostKeyChecking no" $username@$ip "free -m"
   if [ $? -eq 0 ];then
      success=$(($success+1))
      echo -e "
33[32m$ip | success33[0m
" 
   else
       failed=$(($failed+1))
       echo -e "
33[32m$ip | failed33[0m
" 
   fi

done < ip_user_passwd.txt
echo -e '
-------------------------'
echo -e "33[32msuccess: $success | failed: $failed 33[0m"

　

[root@test ~]# cat ip_user_passwd.txt
192.168.0.235   hduser  mypasswd
192.168.4.50    root    123456
192.168.4.50    root    123456

　　

借鉴：https://www.jb51.net/article/119541.htm