自动化sh脚本实现免密登录

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源知原味Coder 2022-05-27 06:24:18 ©著作权

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yum -y install expect
yum install sshpass

#!/bin/bash
#!/bin/bash
#------------------------------------------#
# FileName:             ssh_auto.sh
# Revision:             1.1.0
# Date:                 2017-07-14 04:50:33
# Author:               vinsent
# Email:                hyb_admin@163.com
# Website:              www.vinsent.cn
# Description:          This script can achieve ssh password-free login, 
#                       and can be deployed in batches, configuration
#------------------------------------------#
# Copyright:            2017 vinsent
# License:              GPL 2+
#------------------------------------------#
[ ! -f /root/.ssh/id_rsa.pub ] && ssh-keygen -t rsa -p ‘‘ &>/dev/null  # 密钥对不存在则创建密钥
while read line;do
        ip=`echo $line | cut -d " " -f1`             # 提取文件中的ip
        user_name=`echo $line | cut -d " " -f2`      # 提取文件中的用户名
        pass_word=`echo $line | cut -d " " -f3`      # 提取文件中的密码
expect <        spawn ssh-copy-id -i /root/.ssh/id_rsa.pub $user_name@$ip
        expect {
                "yes/no" { send "yes\n";exp_continue}
                "password" { send "$pass_word\n"}
        }
        expect eof
EOF
  
done < /root/host_ip.txt      # 读取存储ip的文件

[root@localhost kubeedge]# ./autossh.sh
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.103 # 复制公钥到目标主机
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: ERROR: Too many arguments. Expecting a target hostname, got: 'root@192.168.56.103' '#' '复制公钥到目标主机'

Usage: /usr/bin/ssh-copy-id [-h|-?|-f|-n] [-i [identity_file]] [-p port] [[-o <ssh -o options>] ...] [user@]hostname
-f: force mode -- copy keys without trying to check if they are already installed
-n: dry run -- no keys are actually copied
-h|-?: print this help
expect: spawn id exp6 not open
while executing
"expect eof"
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.104 # 复制公钥到目标主机
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: ERROR: Too many arguments. Expecting a target hostname, got: 'root@192.168.56.104' '#' '复制公钥到目标主机'

Usage: /usr/bin/ssh-copy-id [-h|-?|-f|-n] [-i [identity_file]] [-p port] [[-o <ssh -o options>] ...] [user@]hostname
-f: force mode -- copy keys without trying to check if they are already installed
-n: dry run -- no keys are actually copied
-h|-?: print this help
expect: spawn id exp6 not open
while executing
"expect eof"
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.105 # 复制公钥到目标主机
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: ERROR: Too many arguments. Expecting a target hostname, got: 'root@192.168.56.105' '#' '复制公钥到目标主机'

Usage: /usr/bin/ssh-copy-id [-h|-?|-f|-n] [-i [identity_file]] [-p port] [[-o <ssh -o options>] ...] [user@]hostname
-f: force mode -- copy keys without trying to check if they are already installed
-n: dry run -- no keys are actually copied
-h|-?: print this help
expect: spawn id exp6 not open
while executing
"expect eof"
[root@localhost kubeedge]# vim ./autossh.sh
[root@localhost kubeedge]# ./autossh.sh
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.103
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.56.103's password:

Number of key(s) added: 1

Now try logging into the machine, with: "ssh 'root@192.168.56.103'"
and check to make sure that only the key(s) you wanted were added.

spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.104
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.56.104's password:

Number of key(s) added: 1

Now try logging into the machine, with: "ssh 'root@192.168.56.104'"
and check to make sure that only the key(s) you wanted were added.

spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.56.105
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.56.105's password:

Number of key(s) added: 1

Now try logging into the machine, with: "ssh 'root@192.168.56.105'"
and check to make sure that only the key(s) you wanted were added.

[root@localhost kubeedge]# ls
autossh.sh ip.log ssh.sh
[root@localhost kubeedge]# ssh root@192.168.56.104
Last failed login: Mon Nov 2 06:38:15 EST 2020 from 192.168.56.103 on ssh:notty
There were 3 failed login attempts since the last successful login.
Last login: Mon Nov 2 06:20:29 2020 from 192.168.56.1
[root@localhost ~]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.2.6 netmask 255.255.255.0 broadcast 10.0.2.255
inet6 fe80::c40f:c6fb:c802:a2ce prefixlen 64 scopeid 0x20<link>
inet6 fe80::d475:845d:e391:4321 prefixlen 64 scopeid 0x20<link>
inet6 fd17:625c:f037:2:a961:3128:f0fa:8abd prefixlen 64 scopeid 0x0<global>
ether 08:00:27:ad:18:c9 txqueuelen 1000 (Ethernet)
RX packets 14839 bytes 19725195 (18.8 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6564 bytes 472543 (461.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.56.104 netmask 255.255.255.0 broadcast 192.168.56.255
inet6 fe80::5c24:833a:8dce:c67 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:ba:87:bb txqueuelen 1000 (Ethernet)
RX packets 154475 bytes 12247970 (11.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 228511 bytes 25593975 (24.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@localhost ~]#

自动化sh脚本实现免密登录_bash