Build an SSH Springboard machine

Build an SSH Springboard machine

Environment Introduction:

[Email protected] ~]# cat/etc/redhat-release CentOS release 6.6 (Final) [[email protected] ~]# uname-r2.6.32-504.el6.x86 _64

Prepare 2-3 virtual machines, at least 2 units.

1. Create a springboard machine user on all machines

[[email protected] ~]# useradd tb[[email protected] ~]# echo "123.com" |PASSWD--stdin TB

2. Create a key on a springboard machine

[[email protected] ~]# su-tb[[email protected] ~]# ssh-keygen-t dsa-p-F ~/.SSH/ID_DSA

Copy the generated key to a machine that needs to be logged on through a springboard machine.

[Email protected] ~]# ssh-copy-id-i ssh/id_dsa.pub "-p [email protected]" [[email protected] ~]# ssh-copy-id-i. ssh/ Id_dsa.pub "-p [email protected]" [[email protected] ~]# ssh-copy-id-i. ssh/id_dsa.pub "-p [email protected]"

3. Create a Springboard machine script

[[email protected] ~]# cd /server/scripts[[email protected] ~]# vim  Tiaoban.sh#!/bin/bashfunction trapper () {  trap  " int quit tstp term  hup}function menu () {    cat <<-eof  <== is preceded by a minus sign ========= host list==========    1) 192.168.75.141    2) 192.168.75.140     3) 192.168.75.139    4) exit=============================     eof  <===eof Front is a tab key, not 4 spaces. }function host () {   case  "$"  in     1)        ssh [email protected]      ;; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;2)       ssh [email protected]       ;; &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;3)       ssh [email protected]      ;;     4|*)       exit      ;;     esac}function main () {  while true  do     trapper    clear    menu    read -p   "Please select:"  num    host  $num   done}main:wq  Keep out

4. Add Login System Load Script

[[email protected] ~]# cd/etc/profile.d/[[email protected] ~]# vim tiaoban.sh #添加如下内容 [$UID-ne 0] && [$UID-N e-]&&. /server/scripts/tiaoban.sh# The root user uid is known as the 0,oldboy user uid of 500, these users do not enter the springboard system.

5. Test below. Use Xshell to log in to the springboard machine.

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This article is from "Xiao Zeng" blog, please be sure to keep this source http://zengxin.blog.51cto.com/6098070/1890655

Build an SSH Springboard machine