远程登录到server上，并执行指定的操作配合spawn和expect

admin · 发表于 2020-6-21 17:00:01

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TRANSFER_HOST=111.111.111.111
TRANSFER_SSH_PORT=2233
TRANSFER_USER=my_admin
TRANSFER_PASSWORD=mypassword
TRANSFER_PROJECT=/home/my_admin/deploy/transfer/*
DEPLOY_DIR=$(cd -P -- "$(dirname -- "$0")" && pwd -P)
fuction remote_transfer(){
echo "$1"
shift 1
expect << EOF
      set timeout 30
      spawn $@
      expect {
         "(yes/no)" {send "yes\r"; exp_continue}
         "password:" {send "`echo $TRANSFER_PASSWORD |base64 -d`\r"}
      }
      expect eof
EOF
}
remote_transfer "Download files from remote JumpServer now ......" "scp -P ${TRANSFER_SSH_PORT}  ${TRANSFER_USER}@${TRANSFER_HOST}:${TRANSFER_PROJECT} ${DEPLOY_DIR}"

admin · 发表于 2020-11-5 12:05:46

expect执行多条命令

复制代码
#!/usr/bin/expect -f

set timeout 10

spawn sudo su - root
expect "*password*"
send "123456\r"
expect "#*"
send "ls\r"
expect "#*"
send "df -Th\r"
send "exit\r"
expect eof

admin · 发表于 2020-11-5 12:06:25

shell调用expect执行多行命令.

复制代码
#!/bin/bash
ip=$1
user=$2
password=$3

expect <<EOF
set timeout 10
spawn ssh $user@$ip
expect {
      "yes/no" { send "yes\n";exp_continue }
      "password" { send "$password\n" }
}
expect "]#" { send "useradd hehe\n" }
expect "]#" { send "touch /tmp/test.txt\n" }
expect "]#" { send "exit\n" } expect eof
EOF
#./ssh5.sh 192.168.1.10 root 123456

admin · 发表于 2020-11-5 12:07:11

使用普通用户登录远程主机，并通过sudo到root权限，通过for循环批量在远程主机执行命令.

复制代码
$ cat timeout_login.txt
10.0.1.8
10.0.1.34
10.0.1.88
10.0.1.76
10.0.1.2
10.0.1.3
复制代码
复制代码
#!/bin/bash

for i in `cat /home/admin/timeout_login.txt`
do

/usr/bin/expect << EOF
spawn /usr/bin/ssh -t -p 22022 admin@$i "sudo su -"

expect {
      "yes/no" { send "yes\r" }
}

expect {
      "password:" { send "xxo1#qaz\r" }
}

expect {
      "*password*:" { send "xx1#qaz\r" }
}

expect "*]#"
send "df -Th\r"
expect "*]#"
send "exit\r"
expect eof

EOF
done
复制代码
密码过期需要批量修改密码

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#!/bin/bash

for i in `cat /root/soft/ip.txt`
do

/usr/bin/expect << EOF
spawn /usr/bin/ssh root@$i

expect {
      "UNIX password" { send "Huawei@123\r" }
}

expect {
      "New password:" { send "xxHuzzawexxi@1234#\r" }
}

expect {
      "Retype new password:" { send "xxHuzzawexxi@1234#\r" }
}

expect "*]#"
send "echo Huawei@123|passwd --stdin root\r"
expect "*]#"
send "exit\r"
expect eof
EOF
done

admin · 发表于 2020-11-5 12:07:56

创建ssh key，将id_rsa和id_rsa.pub文件分发到各台主机上面。

复制代码
1.创建主机配置文件

[root@localhost script]# cat host
192.168.1.10 root 123456
192.168.1.20 root 123456
192.168.1.30 root 123456

[root@localhost script]# ls
copykey.sh  hosts
2.编写copykey.sh脚本,自动生成密钥并分发key.
[root@localhost script]# vim copykey.sh

#!/bin/bash

# 判断id_rsa密钥文件是否存在
if [ ! -f ~/.ssh/id_rsa ];then
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa
else
echo "id_rsa has created ..."
fi

#分发到各个节点,这里分发到host文件中的主机中.
while read line
  do
user=`echo $line | cut -d " " -f 2`
ip=`echo $line | cut -d " " -f 1`
passwd=`echo $line | cut -d " " -f 3`

expect <<EOF
   set timeout 10
   spawn ssh-copy-id $user@$ip
   expect {
      "yes/no" { send "yes\n";exp_continue }
      "password" { send "$passwd\n" }
   }
   expect "password" { send "$passwd\n" }
EOF
  done <  hosts

admin · 发表于 2020-11-5 12:08:14

expect常用命令总结:

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spawn             交互程序开始后面跟命令或者指定程序
expect             获取匹配信息匹配成功则执行expect后面的程序动作
send exp_send    用于发送指定的字符串信息
exp_continue       在expect中多次匹配就需要用到
send_user          用来打印输出相当于shell中的echo
exit             退出expect脚本
eof                expect执行结束退出
set                定义变量
puts             输出变量
set timeout       设置超时时间

admin · 发表于 2020-11-5 12:08:54

示例：

1.ssh登录远程主机执行命令,执行方法 expect 1.sh 或者 ./1.sh

# vim 1.sh

#!/usr/bin/expect

spawn ssh saneri@192.168.56.103 df -Th
expect "*password"
send "123456\n"
expect eof
2. ssh远程登录主机执行命令，在shell脚本中执行expect命令,执行方法sh 2.sh、bash 2.sh 或./2.sh都可以执行.

复制代码
#!/bin/bash

passwd='123456'

/usr/bin/expect <<-EOF

set time 30
spawn ssh saneri@192.168.56.103 df -Th
expect {
"*yes/no" { send "yes\r"; exp_continue }
"*password:" { send "$passwd\r" }
}
expect eof
EOF
复制代码

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远程登录到server上，并执行指定的操作 配合spawn和expect

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远程登录到server上，并执行指定的操作配合spawn和expect