ssh-keygen 자동화 스크립트

수정일 : 24-07-01(앤서블 설치 스크립트 추가)

0. /data/work/system_download.txt

[server_ip]|192.168.56.10|192.168.56.11|192.168.56.12|192.168.56.13|192.168.56.14

사전 준비

- 각 서버 sudo passwd root

- 각 서버 apt-get update -y

- 각 서버 apt-get install expect -y

 

- ansible

IT 자동화 도구로, 서버 설정, 애플리케이션 배포, 설정 관리 및 기타 IT 작업을 자동화하는 데 사용

 

0. expect 설치 및 앤서블 설치(/data/work/ssh_keygen_auto_zero.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"


ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}

# 모든 ip 돌며 root 비번 설정
for ((i=0; i<len_array; i++));
do
        current_ip=${ip_array[$i]}
        echo "작업중 서버 ${current_ip}"
sudo /usr/bin/expect << EOD
        spawn ssh ${current_ip} "apt update -y"
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        eof
}
EOD
        sleep 2


sudo /usr/bin/expect << EOD
        spawn ssh ${current_ip} "apt install ansible -y"
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        eof
}
EOD
        sleep 2

done

 

1. ssh-keygen 배포(/data/work/ssh_keygen_auto_first.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"


ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}

# ip 돌며 키젠 받기
for ((i=0; i<len_array; i++));
do
        current_ip=${ip_array[$i]}
        
        sudo /usr/bin/expect << EOD
        spawn ssh ${current_ip} "ssh-keygen -t rsa -b 2048 -N '' -f /root/.ssh/id_rsa"
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        "*Overwrite*" {
                send "y\r"
                exp_continue
        }
        eof
}
EOD
        sleep 2
done

 

 

 

2. /etc/hosts 스크립트(/data/work/hosts_set_auto.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"

ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}


# /etc/hosts 빈 파일 만들기
truncate -s 0 /etc/hosts

# ip를 돌며 /etc/hosts 만들기
for ((i=0; i<len_array; i++)); do
        current_ip=${ip_array[$i]}
        echo "작업중 ip ${current_ip}"

etc_host_name=$(expect -c "
spawn ssh ${current_ip} \"hostname\"
expect \"*password*\"
send \"nds1101\r\"
expect eof
" | tail -n 1)

    cleaned_ip_host=$(echo -e ${current_ip} ${etc_host_name} | sed 's/\r//g')
    echo ${cleaned_ip_host} >> /etc/hosts
    sleep 2
done
echo "127.0.0.1 localhost" >> /etc/hosts

# /etc/hosts 파일 각 서버로 scp
for ((si=1; si<len_array; si++)); do
        ssh_ip=${ip_array[$si]}
        echo $ssh_ip

        sudo /usr/bin/expect << EOD
        spawn scp /etc/hosts ${ssh_ip}:/etc/hosts
        expect "*password*"
        send "nds1101\r"
        sleep 2
expect eof
EOD
done

 

 

 

3. ssh_keygen 스크립트 (/data/work/ssh_keygen_auto_second.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"

ssh_home="/root/.ssh"

ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}


rs_id=$(cat ${ssh_home}/id_rsa.pub)
echo ${rs_id} >> ${ssh_home}/authorized_keys

dt_ip=${ip_array[0]}
echo $dt_ip
for ((i=1; i<len_array; i++));
do
        sudo /usr/bin/expect << EOD
        spawn scp ${ssh_home}/authorized_keys root@${ip_array[$i]}:${ssh_home}/authorized_keys
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        "*Overwrite*" {
                send "y\r"
                exp_continue
        }
        eof
}
EOD

done

 

 

3. authorized_keys 만들기(/data/work/ssh_keygen_auto_three.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"

ssh_home="/root/.ssh"

ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}

# 현재 ip와 다음ip 출력
for ((i=1; i<len_array; i++));
do
        current_ip=${ip_array[$i]}
        if (( i < len_array - 1 )); then
                next_ip=${ip_array[$i+1]}
        else
                next_ip='no_field'
        fi

        sudo /usr/bin/expect << EOD
        spawn ssh ${current_ip} "cat ${ssh_home}/id_rsa.pub >> ${ssh_home}/authorized_keys"
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        "*Overwrite*" {
                send "y\r"
                exp_continue
        }
        eof
}

EOD
        sleep 2

        sudo /usr/bin/expect << EOD
        spawn scp root@${current_ip}:${ssh_home}/authorized_keys root@${next_ip}:${ssh_home}/authorized_keys
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        "*Overwrite*" {
                send "y\r"
                exp_continue
        }
        eof
}
EOD
        sleep 2

done

 

 

4. authorized_keys 모든서버 복사 (/data/work/ssh_keygen_auto_four.sh)

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"

ssh_home="/root/.ssh"

ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}

source_ip=${ip_array[-1]}
echo $source_ip

for ((i=${len_array}-2; i>=0; i--));
do
        dest_ip=${ip_array[$i]}
        echo $dest_ip
        sudo /usr/bin/expect << EOD
        spawn scp root@${source_ip}:${ssh_home}/authorized_keys root@${dest_ip}:${ssh_home}/authorized_keys
        expect {
        "*yes/no*" {
                send "yes\r"
                exp_continue
        }
        "*assword:" {
                send "nds1101\r"
                exp_continue
        }
        "*Overwrite*" {
                send "y\r"
                exp_continue
        }
        eof
}
EOD
        sleep 2
done

 

 

5. 최종 proc (/data/work/ssh_keygen_auto_proc.sh)

#!/usr/bin/bash

echo "[`date`] Time_Stamp : ssh-keygen auto Start...."

echo "[`date`] Time_Stamp : ansible 설치 Start...."
/data/work/ssh_keygen_auto_zero.sh
echo "[`date`] Time_Stamp : ansible 설치 End...."; echo "";


echo "[`date`] Time_Stamp : ssh-keygen 배포  Start...."
/data/work/ssh_keygen_auto_first.sh
echo "[`date`] Time_Stamp : ssh-keygen 배포  End...."; echo "";


echo "[`date`] Time_Stamp : /etc/hosts 만들기  Start...."
/data/work/hosts_set_auto.sh
echo "[`date`] Time_Stamp : /etc/hosts 만들기  End...."; echo "";


echo "[`date`] Time_Stamp : ssh-keygen scp_rsa_id  Start...."
/data/work/ssh_keygen_auto_second.sh
echo "[`date`] Time_Stamp : ssh-keygen scp_rsa_id  End...."; echo "";


echo "[`date`] Time_Stamp : authorized_keys 만들기  Start...."
/data/work/ssh_keygen_auto_three.sh
echo "[`date`] Time_Stamp : authorized_keys 만들기  End...."; echo "";


echo "[`date`] Time_Stamp : authorized_keys 모든서버 배포  Start...."
/data/work/ssh_keygen_auto_four.sh
echo "[`date`] Time_Stamp : authorized_keys 모든서버 배포  End...."; echo "";

echo "[`date`] Time_Stamp : ssh-keygen auto End...."

 

 

6. ansible 설치 확인

#!/usr/bin/bash

ip_file="/data/work/system_download.txt"
ip_array=($(cat ${ip_file} | grep server_ip | awk -F '|' '{for(i=2; i<=NF; i++) print $i}'))
len_array=${#ip_array[@]}

# 현재 ip와 다음ip 출력
for ((i=0; i<len_array; i++));
do
        current_ip=${ip_array[$i]}
        echo "------ansible check ${current_ip}------------"
        ssh ${current_ip} "ansible --version"
        echo "--------------------------------------"; echo"";
done