本地Linux备份服务器[Client]定期备份云服务器[Server]上的文件(上)

1.Client端执行如下命令，全程不需要输入任何东西

ssh-keygen -t rsa

2.拷贝Client上生成的公钥到服务器

scp -p /root/.ssh/id_rsa.pub root@250.250.250.250:/root/.ssh/

3.把client公钥信息保存到authorized_keys

cat id_rsa.pub >>authorized_keys

4.拷贝服务器文件到本地

scp -r root@250.250.250.250:/123.txt   /home/backup

5.编写shell脚本 

echo "Hello world" 
time=$(date +"%Y-%m-%d") 
scp -r -C root@123.456.789.111:/wwwroot /home/backup/$time 
date >> /home/backup/res.log 
echo 'success' >> /home/backup/res.log 
echo '---------------------------' >> /home/backup/res.log 
SevenDays=$(date -d -7day +"%Y-%m-%d")  
if [ -d /home/backup/$SevenDays ]
then
rm -rf /home/backup/$SevenDays 
date >> /home/backup/res.log 
echo 'delete success' >> /home/backup/res.log 
else
echo "file not exist"
echo "bash complete"
fi

　　

6.定时任务执行shell脚本

0 18 * * * sh /root/down.sh