ssh 免密码登录实现批量处理

搭建集群的时候ssh 免密码登录是一个问题以下脚本将实现批量处理

文件1主机名：host

17.19.18.11:123
17.19.18.12:123

文件2：ssh_setup.py

#!/usr/bin/python

import subprocess
import os

file_dir='/home/hosts'

with open(file_dir) as data:
    for each_line in data.readlines():
        if each_line != '':
            (ip,passwd)=each_line.split(':',2)
            print('./sshkey.exp '+ip+' root '+passwd.strip('\n')+' | grep ssh-rsa >> ~/.ssh/authorized_keys')
            subprocess.Popen('./sshkey.exp '+ip+' root '+passwd.strip('\n')+' | grep ssh-rsa >> ~/.ssh/authorized_keys',shell=True)
          #  subprocess.Popen('./sshkey.exp '+ip+' root '+passwd+' \\| grep ssh-rsa >> ~/.ssh/authorized_keys',shell=True)
        else:
            pass
subprocess.Popen('chmod 755 ~/.ssh/authorized_keys',shell=True)
#subprocess.Popen('/home/ssh_distribute.py',shell=True) 

文件3：ssh_distribute.py

#!/usr/bin/python

import subprocess
import os

file_dir='/home/hosts'

with open(file_dir) as data:
    for each_line in data.readlines():
        if each_line != '':
            (ip,passwd)=each_line.split(':',2)
            print('./noscp.exp ~/.ssh/authorized_keys '+ip+':~/.ssh '+'root '+passwd.strip('\n'))
            subprocess.Popen('./noscp.exp ~/.ssh/authorized_keys '+ip+':~/.ssh '+'root '+passwd.strip('\n'),shell=True)
          #  subprocess.Popen('./sshkey.exp '+ip+' root '+passwd+' \\| grep ssh-rsa >> ~/.ssh/authorized_keys',shell=True)
        else:
            pass
#subprocess.Popen('chmod 755 ~/.ssh/authorized_keys',shell=True)

文件4：noscp.exp

#!/usr/bin/expect

#noscp.exp

if {$argc<4} { 
 puts stderr "Usage: $argv0 localfile  remotefile user passwd " 
 exit 1 
}

set localfile [ lindex $argv 0 ] 
set remotefile  [ lindex $argv 1 ] 
set user  [ lindex $argv 2 ] 
set pwd  [ lindex $argv 3 ]

set timeout 30

spawn scp ${localfile}  ${user}@${remotefile}

expect { 
 "*yes/no" { send "yes\r"; exp_continue } 
 "*password:" { send "$pwd\r" } 
}

expect eof

 

文件5：sshkey.exp

#!/usr/bin/expect

#sshkey.exp

if {$argc<3} { 
 puts stderr "Usage: $argv0 host  user  passwd " 
 exit 1 
}

set host [ lindex $argv 0 ] 
set user  [ lindex $argv 1 ] 
set pwd  [ lindex $argv 2 ]
set timeout 30
#spawn ssh  ${user}@${host} "rm -rf ~/.ssh/id_rsa*" 
# 
#expect { 
# "*yes/no" { send "yes\r"; exp_continue } 
# "*password:" { send "$pwd\r"; exp_continue  } 
#}


spawn ssh  ${user}@${host} "ssh-keygen -t rsa"

expect { 
 "*yes/no" { send "yes\r"; exp_continue } 
 "*password:" { send "$pwd\r"; exp_continue  } 
 "Enter file in which to save the key*" { send "\n\r"; exp_continue } 
 "Overwrite*" { send "y\n"; exp_continue }  
 "Enter passphrase (empty for no passphrase):" { send "\n\r"; exp_continue } 
 "Enter same passphrase again:" { send "\n\r" } 
}

spawn ssh  ${user}@${host} "cat ~/.ssh/id_rsa.pub"
expect { 
 "*yes/no" { send "yes\r"; exp_continue } 
 "*password:" { send "$pwd\r"  } 
}

expect eof

步骤：

1.将此文件夹内文件拷贝到/home目录下
2.host内添加所有待处理的 ip:密码 
3.安装expect 如果没有 yum install expect
4.执行./ssh_setup.py 
5.执行./ssh_distribute.py