Linux shell （ssh批量配置免秘）读取配置文件，进行远程操作

需要目标机器安装有 expect 命令

分成五个文件config.ini(配置文件)、id_ras.pub（公钥）、read.sh（一个函数，用于读取配置文件）、test.sh（执行文件）、run.sh（远程运行脚本） 是一个配置文件.

步骤1：读取配置文件 ip，user,pwd

步骤2：将id_rsa.pub、run.sh scp到远程机器上

步骤3：远程运行脚本

read.sh

#！/bin/bash

GetKey(){
    section=$(echo $ |cut -d '.' -f )
    key=$(echo $ |cut -d '.' -f )
    if [ "$section"x = "ip"x ];then
        nub=`cat config.ini | grep -n "$key={" |awk -F ":" '{print $1}'`
        nue=`cat config.ini | grep -n "}" |awk -F ":" '{print $1}'`
        nub=`expr $nub +`
        for i in $nue
        do
            if [ $i -gt $nub ]; then
                a=$i
                break
            fi
        done
        nue=`expr $a -`
        sed -n "$nub,$nue p" config |sed s/,//g
    else
        sed -n "/\[$section\]/,/\[.*\]/{
         /^\[.*\]/d
         /^[ \t]*$/d
         /^$/d
         /^#.*$/d
         s/^[ \t]*$key[ \t]*=[ \t]*\(.*\)[ \t]*/\/p
        }" config.ini
} 

run.sh

#！/bin/bash

Create(){
    /usr/bin/expect -c"
    set timeout
    spawn ssh-keygen -t rsa
    expect \":\"
    send \"\r\"
    expect \":\"
    send \"\r\"
    expect \":\"
    send \"\r\"
    expect eof
    exit
    "
}

if [ ! -d .ssh ];then
    Create
    if [ $? !=  ];then
        echo "step for create failed"
        exit
    else
        cat id_rsa.pub >> .ssh/authorized_keys
        if [ $? !=  ];then
            echo "step for cp failed"
            exit
        fi
    fi
else
    cat id_rsa.pub >> .ssh/authorized_keys
    if [ $? !=  ];then
        echo "step for cp failed"
        exit
    fi
fi

test.sh

#!/bin/bash
. ./read.sh

ip=$(GetKey "ip.ip")
passwd=$(GetKey "pass.passwd")
user=$(GetKey "user.usr")

for i in $ip
do
/usr/bin/expect -c"
set timeout10
spawn /usr/bin/scp -r run.sh $user@$i
expect \"password:\" {send \"$passwd\r\"}
spawn /usr/bin/scp -r id_rsa.pub $user@$i
expect \"password:\" {send \"$passwd\r\"}
expect eof
exit
"
/usr/bin/expect << EOF
set timeout
spawn ssh user@$i
expect "password:"
send "$passwd\r"
expect "]"
send "sh run.sh\r"
send "exit\r"
expect eof
EOF
done

配置文件

[ip]
ip={
12.23.31.114
,21.34.54.112
}

[user]
usr=hehehe

[pass]
passwd=wohehehda