Ubuntu rsync 配置

本文介绍 rsync 的使用和配置.

环境:
* OS: Ubuntu Server 16.04
* rsync: 3.1.1

## 修改启动方式

Ubuntu Server 自带了 rsync, 但 rsync 服务默认不启动的, 首先修改配置:

`$sudo nano /etc/default/rsync`

```
# start rsync in daemon mode from init.d script?
# only allowed values are "true", "false", and "inetd"
# Use "inetd" if you want to start the rsyncd from inetd,
# all this does is prevent the init.d script from printing a message
# about not starting rsyncd (you still need to modify inetd's config yourself).
RSYNC_ENABLE=true #false改true
```

rsync 有两种启动方式
 * 当rsync服务器负载比较高时，则使用 daemon 独立启动模式节省资源
 * 当rsync服务器负载较低时，可使用xinetd运行方式
创建配置文件

## 配置 rsync

复制示例配置

`$sudo cp /usr/share/doc/rsync/examples/rsyncd.conf /etc `
编辑配置
`$sudo nano /etc/rsyncd.conf`

```
# sample rsyncd.conf configuration file

# GLOBAL OPTIONS

#motd file=/etc/motd
#log file=/var/log/rsyncd
# for pid file, do not use /var/run/rsync.pid if
# you are going to run rsync out of the init.d script.
# The init.d script does its own pid file handling,
# so omit the "pid file" line completely in that case.
#pid file=/var/run/rsyncd.pid
#syslog facility=daemon
#socket options=

# MODULE OPTIONS

[test] #模块名称

comment = public archive
path = /home/sxsfeq/download/test
use chroot = yes
# max connections=10
lock file = /var/lock/rsyncd
# the default for read only is yes...
read only = yes
list = yes
uid = nobody #与下方gid代表用 nobody 读取上方 path 的目录, 如果此处用户名不正确可能无法读取 path 的内容 
gid = nogroup #
# exclude =
# exclude from =
# include =
# include from =
auth users = mytest
secrets file = /etc/rsyncd.secrets
strict modes = yes #如果出现客户端 "@ERROR: auth failed on module xxx" 可尝试改为 no, 该值在 windows 下有意义(见rsyncd.conf官方手册)
# hosts allow =
# hosts deny =
ignore errors = no
ignore nonreadable = yes
transfer logging = no
# log format = %t: host %h (%a) %o %f (%l bytes). Total %b bytes.
timeout = 600
refuse options = checksum dry-run
dont compress = *.gz *.tgz *.zip *.z *.rpm *.deb *.iso *.bz2 *.tbz
```

创建密码文件

`$sudo nano /etc/rsyncd.secrets`

mytest:mytest #用户名:密码

`$sudo chmod 655 /etc/rsyncd.secrets`

启动和停止服务

`sudo /etc/init.d/rsync start #启动`

`sudo /etc/init.d/rsync stop #停止`

或者

`sudo service rsync start|stop|restart #启动|停止|重启`

## 客户端

`$rsync -avP mytest@192.168.2.97::ftp . #"."代表当前目录`

`$PASSWORD: #输入在服务器上 /etc/rsyncd.secrets 里的密码`

### 参考:

* [Ubuntu下 rsync同步文件实例](http://blog.csdn.net/bugouyonggan/article/details/21970867)
* [rsync配置实例 （包括问题解决方案）](http://wangxiang2010.blog.51cto.com/287785/455756)

### 问题集锦:

* [Rsync ERROR: auth failed on module解决方法](http://www.jb51.net/article/41417.htm)

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