【实验需求】

现需要对局域网中的网络设备进行定期备份，以便在设备出现故障时可以有效的进行恢复。

【实验环境】

image-20230721142605705 
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1、在 Centos7 上执行脚本来对 AR1 和 AR5 设备的配置文件备份到 Centos7 服务器上
2、AR1 和 AR5 均已经配置了 SSH 远程登录
https://blog.csdn.net/liwangjin0116/article/details/126596693


<R5>dis ip int b | include GigabitEthernet0/0/0
Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              172.16.10.5/24       up         up

<R1>dis ip int b | include GigabitEthernet0/0/0
Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              172.16.10.254/16     up         up

[root@centos7 ~]# ip a show ens38
3: ens38: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:b6:2b:56 brd ff:ff:ff:ff:ff:ff
    inet 172.16.10.128/16 brd 172.16.255.255 scope global noprefixroute ens38
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feb6:2b56/64 scope link 
       valid_lft forever preferred_lft forever

# 华为交换机/路由器配置telnet、ssh远程登录参考文章
https://blog.csdn.net/liwangjin0116/article/details/126596693

【实验过程】

1、在 Centos7 服务器上安装所需要的软件包

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[root@centos7 ~]# yum -y install tftp-server xinetd expect

2、准备自动备份的脚本

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[root@centos7 network]# pwd
/data/network
[root@centos7 network]# ls
configure_backup.sh  UserPasswd.txt

[root@centos7 network]# cat configure_backup.sh 
#!/bin/bash

DIR="/data/network"
# 获取备份时间
BACKUP_DATA=`date +%F`
# 创建每次备份的目录
mkdir -p /data/NetworkBackup/${BACKUP_DATA}
# 授权TFTP根目录
chmod -R 777 /data/NetworkBackup
# 修改TFTP根目录
sed -Ei "/server_args/s@(.*-s).*@\1 /data/NetworkBackup/${BACKUP_DATA}@" /etc/xinetd.d/tftp

systemctl restart xinetd.service && echo -e "\033[1;32mservice restart success\033[0m" || { echo -e "\033[1;31mservice restart fail\033[0m";exit 101; }

echo -e "\033[1;34mstart backup....\033[0m"

# 需要备份的设备IP列表
IPLIST='
172.16.10.254
172.16.10.5
'

for IP in ${IPLIST};do

USERNAME=`grep -w ${IP} ${DIR}/UserPasswd.txt | awk '{print $2}'`
PASSWORD=`grep -w ${IP} ${DIR}/UserPasswd.txt | awk '{print $3}'`

expect >> /dev/null << EOF
set timeout 10
log_file /data/NetworkBackup/${BACKUP_DATA}/${IP}.cfg
spawn ssh ${USERNAME}@${IP}
expect {
"yes/no" { send "yes\n";exp_continue }
"password" { send "${PASSWORD}\n";exp_continue }
}
expect "*>" { send "display cur\n" }
while (1) {
expect {
        "*---- More ----" { send "  ";exp_continue }
        "*>*" {  break }
}
}
expect eof
EOF
done

echo -e "\033[1;32mbackup success\033[0m"

# 准备密码文件
[root@centos7 network]# cat UserPasswd.txt 
172.16.10.254 wh       wuhaolam
172.16.10.5   wuhao    wuhaolam

[root@centos7 network]# chmod +x configure_backup.sh

3、编辑计划任务实现定时执行备份脚本

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[root@centos7 network]# crontab -l
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

30 15 * * * . /data/network/configure_backup.sh

【实验结果】

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[root@centos7 2023-07-21]# pwd
/data/NetworkBackup/2023-07-21
[root@centos7 2023-07-21]# ll -h
total 8.0K
-rwxr-xr-x 1 root root 2.3K Jul 21 15:30 172.16.10.254.cfg
-rwxr-xr-x 1 root root 1.6K Jul 21 15:30 172.16.10.5.cfg