1.企业备份服务多模块配置
开发人员 ---dev --- /vip
运维人员 ---sa --- /sa
数据库人员 ---dba --- /dba
第一步：修改配置文件添加多模块
[sa]
comment = "for system admin"
path = /sa
[vip]
comment = "for dev"
path = /vip
[dba]
comment = "for database"
path = /dba
第二步：创建备份目录 给目录目录rsync权限
[root@backup ~]# mkdir -p /{sa,vip,dba}
[root@backup ~]# chown rsync.rsync /{sa,vip,dba}
[root@backup ~]# ll -d /{sa,vip,dba}
drwxr-xr-x 2 rsync rsync 6 Jul 15 20:07 /dba
drwxr-xr-x 2 rsync rsync 6 Jul 15 20:07 /sa
drwxr-xr-x 2 rsync rsync 6 Jul 15 20:07 /vip
验证
[root@nfs /]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::sa
Password:
sending incremental file list
hosts
sent 221 bytes received 43 bytes 75.43 bytes/sec
total size is 349 speedup is 1.32
[root@nfs /]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::dba
Password:
sending incremental file list
hosts
sent 221 bytes received 43 bytes 75.43 bytes/sec
total size is 349 speedup is 1.32
[root@nfs /]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::vip
Password:
sending incremental file list
hosts
sent 221 bytes received 43 bytes 75.43 bytes/sec
total size is 349 speedup is 1.32
2.扩展：如果统一将数据存储在一个目录中，如何进行区分不同数据是哪个用户存储的？
环境准备： oldboy ~/oldboy.txt
oldgirl ~/oldgirl.txt
服务端：
[root@backup ~]# ll /backup
total 4
-rw-r--r-- 1 rsync rsync 349 Jun 25 09:12 hosts
客户端
[oldboy@nfs ~]$ rsync -avz oldboy.txt rsync_backup@172.16.1.41::backup
Password:
sending incremental file list
oldboy.txt
sent 120 bytes received 43 bytes 46.57 bytes/sec
total size is 7 speedup is 0.04
服务端
[root@backup ~]# ll /backup
total 8
-rw-r--r-- 1 rsync rsync 349 Jun 25 09:12 hosts
-rw-rw-r-- 1 rsync rsync 7 Jul 17 15:08 oldboy.txt
修改配置文件/etc/rsyncd.conf
uid = root
gid = root
#fake super =yes
chowm root.root /backup
ps:备份服务器中一定要有指定存储的用户存在 多个主机的ID要保持一致
测试
客户端
[oldboy@nfs ~]$ rsync -avz oldboy.txt rsync_backup@172.16.1.41::backup
Password:
sending incremental file list
oldboy.txt
sent 120 bytes received 43 bytes 65.20 bytes/sec
total size is 7 speedup is 0.04
[olgril@nfs ~]$ rsync -avz olgril.txt rsync_backup@172.16.1.41::backup
Password:
sending incremental file list
olgril.txt
sent 119 bytes received 43 bytes 46.29 bytes/sec
total size is 7 speedup is 0.04
服务端检测结果
[root@backup ~]# ll /backup/
total 8
-rw-r--r-- 1 rsync rsync 349 Jun 25 09:12 hosts
-rw-rw-r-- 1 oldboy oldboy 7 Jul 17 15:08 oldboy.txt
[root@backup ~]# ll /backup/
total 12
-rw-r--r-- 1 rsync rsync 349 Jun 25 09:12 hosts
-rw-rw-r-- 1 oldboy oldboy 7 Jul 17 15:08 oldboy.txt
-rw-rw-r-- 1 olgril olgril 7 Jul 17 15:19 olgril.txt
3.备份数据进行排除备份
环境准备
[root@nfs ~]# mkdir /oldboy/{a..c}
[root@nfs ~]# touch /oldboy/{a..c}/oldboy{01..03}.txt
需求备份/oldboy整个数据，排除b目录不要同步备份 排除c目录中的oldboy03.txt文件
排除参数
--exclude : 排除指定单个数据信息
--exclude-from: 排除指定多个数据信息
ps: --exclude指定排除数据信息，目录结构必须是相对路径，相对于传输的目录而言
第一种方法：
客户端
[root@nfs ~]# rsync -avz /oldboy/ --exclude=b --exclude=c/oldboy03.txt rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.password
sending incremental file list
./
a/
a/oldboy01.txt
a/oldboy02.txt
a/oldboy03.txt
c/
c/oldboy01.txt
c/oldboy02.txt
sent 378 bytes received 134 bytes 1,024.00 bytes/sec
total size is 0 speedup is 0.00
服务端
[root@backup /backup]# tree /backup
/backup
├── a
│ ├── oldboy01.txt
│ ├── oldboy02.txt
│ └── oldboy03.txt
└── c
├── oldboy01.txt
└── oldboy02.txt
2 directories, 5 files
第二种方法：
客户端
[root@nfs ~]# vi /oldboy/exclude.txt
b/oldboy01.txt
b/oldboy02.txt
c/oldboy01.txt
c/oldboy02.txt
[root@nfs ~]# rsync -avz /oldboy/ --exclude-from=/oldboy/exclude.txt rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.password
sending incremental file list
./
exclude.txt
a/
a/oldboy01.txt
a/oldboy02.txt
a/oldboy03.txt
b/
b/oldboy03.txt
c/
c/oldboy03.txt
sent 507 bytes received 161 bytes 1,336.00 bytes/sec
total size is 61 speedup is 0.09
服务端
[root@backup /backup]# tree /backup
/backup
├── a
│ ├── oldboy01.txt
│ ├── oldboy02.txt
│ └── oldboy03.txt
├── b
│ └── oldboy03.txt
├── c
│ └── oldboy03.txt
└── exclude.txt
3 directories, 6 files
4.企业备份服务创建多级目录（一级一级创建，不能一次性创建多级目录）
需求：
sa /sa
sa01 /sa/sa01/scripts
/conf
sa02 /sa/sa02/
sa03 /sa/sa03/
dev /devop
dba /dba
客户端
[root@nfs ~]# rsync -avz /oldboy/ rsync_backup@172.16.1.41::backup/sa/
Password:
sending incremental file list
created directory sa
./
exclude.txt
a/
a/oldboy01.txt
a/oldboy02.txt
a/oldboy03.txt
b/
b/oldboy01.txt
b/oldboy02.txt
b/oldboy03.txt
c/
c/oldboy01.txt
c/oldboy02.txt
c/oldboy03.txt
sent 715 bytes received 262 bytes 217.11 bytes/sec
total size is 61 speedup is 0.06
服务端
#5.企业备份数据访问控制
[root@backup /backup]# tree /backup
/backup
└── sa
├── a
│ ├── oldboy01.txt
│ ├── oldboy02.txt
│ └── oldboy03.txt
├── b
│ ├── oldboy01.txt
│ ├── oldboy02.txt
│ └── oldboy03.txt
├── c
│ ├── oldboy01.txt
│ ├── oldboy02.txt
│ └── oldboy03.txt
└── exclude.txt
4 directories, 10 files
hosts allow = 172.16.1.0/24 --- 允许172.16.1.0网段主机存储数据 172.16.1.31 10.0.0.31
hosts deny = 0.0.0.0/32 --- 阻止0.0.0.0地址主机存储数据
备份服务配置文件中：全局配置 局部配置
全局配置：在模块之上配置都是全局配置 可以影响所有模块
局部配置：在模块中的配置都是局部配置 可以影响指定模块
PS：局部配置优先于全局配置
image.png
5.企业备份数据模块列表功能
不知道企业中的备份模块信息.通过命令获取备份模块信息
客户端
修改配置文件/etc/rsyncd.conf
list = false --- 如果改为true，客户端可以列表显示服务端详细模块信息
服务端
[root@nfs ~]# rsync -avz rsync_backup@172.16.1.41::
backup "backup dir by oldboy"
sa "for system admin"
vip "for dev"
dba "for database"
6.企业应用无差异同步
--delete： 保证客户端和服务端数据高度一致
服务端
快速清空删除目录数据：rm -f xxx
客户端
[root@backup /backup]# mkdir 666
[root@backup /backup]# ll
total 0
drwxr-xr-x 2 root root 6 Jul 17 18:17 666
服务端
[root@nfs /null]# ll
total 0
[root@nfs /null]# rsync -avz --delete /null/ 172.16.1.41:/backup
root@172.16.1.41's password:
sending incremental file list
deleting 666/
./
sent 47 bytes received 27 bytes 29.60 bytes/sec
total size is 0 speedup is 0.00
客户端
[root@backup /backup]# ll
total 0
扩展
创建50个10M的文件
[root@nfs ~]# dd if=/dev/zero of=/tmp/500M bs=10M count=50
50+0 records in
50+0 records out
524288000 bytes (524 MB) copied, 6.74511 s, 77.7 MB/s
[root@nfs ~]# ll -h /tmp/500M
-rw-r--r-- 1 root root 500M Jul 21 14:14 /tmp/500M
p保持权限不变
P显示传输过程
[root@nfs ~]# rsync -avzP /tmp/500M rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.password
sending incremental file list
500M
524,288,000 100% 167.21MB/s 0:00:02 (xfr#1, to-chk=0/1)
rsync: mkstemp ".500M.5gsqT8" (in backup) failed: Permission denied (13)
sent 509,968 bytes received 120 bytes 145,739.43 bytes/sec
total size is 524,288,000 speedup is 1,027.84
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1178) [sender=3.1.2]
7.企业传输数据扩展应用
port = 874 端口号发生改变
[root@nfs ~]# rsync -avzP /tmp/500M rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.password --port 874
sending incremental file list
500M
524,288,000 100% 142.73MB/s 0:00:03 (xfr#1, to-chk=0/1)
rsync: mkstemp ".500M.jqzjyx" (in backup) failed: Permission denied (13)
sent 509,968 bytes received 120 bytes 113,352.89 bytes/sec
total size is 524,288,000 speedup is 1,027.84
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1178) [sender=3.1.2]
8.服务端配置文件保存路径不正确
rsync --daemon [OPTION]...
--address=ADDRESS bind to the specified address 指定监听地址
--bwlimit=RATE limit socket I/O bandwidth 指定传输速率（错误案例）
人人网 某一时刻带宽不足了 开发人员 --- 服务器（上传开发代码）
每个连接进行限速
-config=FILE specify alternate rsyncd.conf file 指定配置文件
-M, --dparam=OVERRIDE override global daemon config parameter
--no-detach do not detach from the parent
--port=PORT listen on alternate port number 指定监听发端口
备份服务优点缺点：
优点：实现增量备份数据
缺点：在同步大量小文件 容易造成数据丢失 （将目录进行压缩处理）
在同步大文件数据 容易造成数据传输中断 断点续传功能不强 FTP 数据--流媒体（视频 音频） 图片
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