在同步的客户端操作：
[root@www1 dbbackup]# /usr/bin/rsync -avzP --password-file=/tmp/passwd.txt zytbuser@192.168.10.11::dbdata /data/backup/6.100.25.07/dbbackup
rsync: read error: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(759) [receiver=3.0.6]
解决方法：
在rsyncd.conf的服务端操作：
xnetid启动
rsync: read error: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(759) [receiver=3.0.5]
查看rsync日志
rsync: unable to open configuration file "/etc/rsyncd.conf": No such file or directory
xnetid查找的配置文件位置默认是/etc下，根据具体情况创建软链接。例如：
ln -s /etc/rsyncd/rsyncd.conf /etc/rsyncd.conf
或者更改指定默认的配置文件路径，在/etc/xinetd.d/rsync配置文件中。
[root@localhost rsyncd]# ln -s /etc/rsyncd/rsyncd.conf /etc/rsyncd.conf
[root@localhost rsyncd]# ll /etc/rsyncd.conf
lrwxrwxrwx 1 root root 23 8月 1 13:25 /etc/rsyncd.conf -> /etc/rsyncd/rsyncd.conf
rsync权限问题：
[root@localhost 20170807]# /usr/bin/rsync -avH --port=873 --progress ppwxtbuser@192.168.10.98::ppwxweb /data/backup/14.203.190.21 --password-file=/tmp/passwdwx.txt
receiving incremental file list
rsync: send_files failed to open "root" (in ppwxweb): Permission denied (13)
sent 83 bytes received 480 bytes 1126.00 bytes/sec
total size is 88142423 speedup is 156558.48
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1505) [generator=3.0.6]
一开始权限是：www.www 现在修改为root，从此不再报错：
[root@localhost backup]# egrep "uid|gid|read" /etc/rsyncd.conf
uid = root
gid = root
read only = no
rsync同步报错：
[root@localhost 104.203.190.21]# /usr/bin/rsync -avH --port=873 --progress ppwxtbuser@192.168.10.98::ppwxdb /data/backup/14.203.190.21/dbbackup --password-file=/tmp/passwdwx.txt
@ERROR: chdir failed
rsync error: error starting client-server protocol (code 5) at main.c(1503) [receiver=3.0.6]
原因是：
[root@localhost dbackup]# grep pat /etc/rsyncd.conf|tail -1
path = /data/backup/dbackup
/data/backup/dbackup 写成了/data/backup/dbbackup