How to use rsync backup

Known 3 server host names are web01, backup, nfs host information in the table below:

角色      外网IP(NAT)           内网IP(LAN)               主机名
WEB         eth0:10.0.0.7       eth1:172.16.1.7         web01
NFS         eth0:10.0.0.31      eth1:172.16.1.31        nfs
Rsync       eth0:10.0.0.41      eth1:172.16.1.41        backup

客户端:  web    nfs
服务端:  backup

客户端需求
1.客户端提前准备存放的备份的目录，目录规则如下:/backup/nfs_172.16.1.31_2018-09-02 
2.客户端在本地打包备份(系统配置文件、应用配置等)拷贝至/backup/nfs_172.16.1.31_2018-09-02
3.客户端最后将备份的数据进行推送至备份服务器
4.客户端服务器本地保留最近7天的数据, 避免浪费磁盘空间
4.客户端每天凌晨1点定时执行该脚本

服务端需求
1.服务端部署rsync，用于接收客户端推送过来的备份数据
2.服务端需要每天校验客户端推送过来的数据是否完整
3.服务端需要每天校验的结果通知给管理员
4.服务端仅保留6个月的备份数据,其余的全部删除

注意：所有服务器的备份目录必须都为/backup

快递:  散货-------->打包--->标记------->装车-------------->运输------------->仓库
       验货-------->评价
       
系统:  备份的文件-->打包--->校验值----->备份至本地目录---->网络-------->推送至备份服务器
       管理员校验-->通知--->邮件

1.你需要备份什么?
    /etc/fstab /etc/hosts /etc/passwd /var/spool/cron/

2.你要备份到哪里?

    /backup/nfs_172.16.1.31_2018-09-02
    IP: ifconfig eth1 | awk 'NR==2 {print $2}'
    host: hostname
    date: date +%F

3.你要推送到哪里?
    172.16.1.41 

---

Client

[root@nfs ~]# mkdir /scripts
[root@nfs ~]# cat /scripts/clinet_push_data_server.sh 
#!/usr/bin/bash

Variable variables == ---> indicates a fixed character string is not a fixed value

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
Src=/backup
Host=$(hostname)
Addr=$(ifconfig eth1 | awk 'NR==2 {print $2}')
Date=$(date +%F)
Dest=${Host}_${Addr}_${Date}

# 1. Prepare the corresponding backup directory

[ -d $Src/$Dest ] ||  mkdir -p $Src/$Dest

# 2. Copy the files to the backup directory

cd / && \
[ -f $Src/$Dest/sys.tar.gz ] ||  tar czf $Src/$Dest/sys.tar.gz etc/fstab etc/hosts etc/passwd && \
[ -f $Src/$Dest/other.tar.gz ] || tar czf $Src/$Dest/other.tar.gz var/spool/cron/ scripts/ && \

# 3. Add tags

[ -f $Src/$Dest/flag_${Date} ] ||  md5sum $Src/$Dest/*.tar.gz > $Src/$Dest/flag_${Date}

# 4. Push data to a remote warehouse

export RSYNC_PASSWORD=123456
rsync -avz $Src/ [email protected]::backup

# 5. Keep local data recently 7+ days

find $Src/ -type d -mtime +7 | xargs rm -rf

# Batch of analog data

[root@nfs ~]# for i in {1..30};do date -s "201909$i"; sh /scripts/clinet_push_data_server.sh ; done

------

#### 

Server

# 1. Configure your mail server function

[root@backup /]# yum install mailx -y
[root@backup /]# vim /etc/mail.rc       #跳转至最后一行,然后进入编辑模式
set from=发件人@qq.com
set smtp=smtps://smtp.qq.com:465
set smtp-auth-user=发件人@qq.com
set smtp-auth-password=xxxx
set smtp-auth=login
set ssl-verify=ignore
set nss-config-dir=/etc/pki/nssdb/

# 2. To test whether it can successfully sent

mail -s "测试一下" 收件人@qq.com < /etc/hosts

# 3. Scripting

[root@backup ~]# cat /scripts/check_data_notify.sh 
#!/usr/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
Src=/backup
Date=$(date +%F)

# 1. Client Push check over the daily flag data

md5sum -c ${Src}/*_${Date}/flag_${Date} >${Src}/result_${Date}

# 2. Mail to notify the administrator

mail -s "Rsync Backup ${Date}" 收件人@qq.com < ${Src}/result_${Date}

# 3 reserved the last 180 days of data

find $Src/ -type d -mtime +180 | xargs rm -rf

---

Whether the timing of the task in question

Client

[root@nfs ~]# crontab -l
#定时备份数据
*/1 * * * * sh /scripts/clinet_push_data_server.sh &>/dev/null

Server

[root@backup ~]# crontab -l
#定时校验备份的结果
*/1 * * * * sh /scripts/check_data_notify.sh &>/dev/null

---

How to increase a client backup

[root@web01 ~]# rsync -avz [email protected]:/scripts /