自动化sh脚本实现免密登录

你的名字 2022-11-22 00:02 204阅读 0赞

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 <<EOF
            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

\[root@localhost ~\]\#

![SouthEast][]

![SouthEast 1][]

[SouthEast]: /images/20221120/4576feda90654dcb879812822f800bc0.png
[SouthEast 1]: https://img-blog.csdn.net/20180130101719909?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvd3hiODgwMTE0/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast