lsof -i :PORT 查看端口是否开启
netstat -lntup|grep rsync 查看服务是否开启
ps aux|grep rsync 查看是否有进程存在
Rsync服务常见问题汇总讲解:

1 客户端的错误现象:No route to host

rsync服务端开启的iptables防火墙

[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

    rsync: failed to connect to 172.16.1.41: No route to host (113)
    
    rsync error: error in socket IO (code 10) at clientserver.c(124) [sender=3.0.6]

异常问题解决:

关闭rsync服务端的防火墙服务(iptables)


[root@backup mnt]# /etc/init.d/iptables stop

    iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
    
    iptables: Flushing firewall rules:                         [  OK  ]
    
    iptables: Unloading modules:                               [  OK  ]
    
    [root@backup mnt]# /etc/init.d/iptables status
    
    iptables: Firewall is not running.

2 ERROR: The remote path must start with a module name not a /

rsync客户端执行rsync命令错误:

客户端的错误现象:

[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::/backup

ERROR: The remote path must start with a module name not a /

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

异常问题解决:

rsync命令语法理解错误,::/backup是错误的语法,应该为::backup(rsync模块)


3 @ERROR: auth failed on module backup

@ERROR: auth failed on module oldboy

客户端的错误现象:

[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

Password:

@ERROR: auth failed on module backup

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

异常问题解决:

1. 密码真的输入错误,用户名真的错误

2. secrets file = /etc/rsync.password指定的密码文件和实际密码文件名称不一致

3. /etc/rsync.password文件权限不是600

4. rsync_backup:123456密码配置文件后面注意不要有空格

5. rsync客户端密码文件中只输入密码信息即可,不要输入虚拟认证用户名称

4 @ERROR: Unknown module 'backup'

Unknown module 'backup'

[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

    @ERROR: Unknown module 'backup'
    
    rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

异常问题解决:

1、 /etc/rsyncd.conf配置文件模块名称书写错误

2、配置文件中网段限制不对

5 Permission denied
[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

Password:

    sending incremental file list
    
    hosts
    
    rsync: mkstemp ".hosts.5z3AOA" (in backup) failed: Permission denied (13)
    
     
    
    sent 196 bytes  received 27 bytes  63.71 bytes/sec
    
    total size is 349  speedup is 1.57
    
    rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1039) [sender=3.0.6]  

异常问题解决:

1. 共享目录的属主和属组不正确,不是rsync

2. 共享目录的权限不正确,不是755

6 chdir failed
[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

Password:

@ERROR: chdir failed

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

异常问题解决:

  1. 备份存储目录没有建立
  2. 建立的备份存储目录和配置文件定义不一致

    [root@backup backup]# /etc/init.d/xinetd restart

    shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory

    Stopping xinetd: [ OK ]

    Starting xinetd: shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory

                                                         [  OK  ]
    

说明:如果没有备份存储目录,xinetd服务都不能正确启动


7 invalid uid rsync
[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

Password:

@ERROR: invalid uid rsync

rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

异常问题解决:rsync服务对应rsync虚拟用户不存在了


8 客户端已经配置了密码文件,但免秘钥登录方式,依旧需要输入密码

password file must not be other-accessible

[root@nfs01 tmp]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.password

password file must not be other-accessible

continuing without password file

Password:

sending incremental file list

sent 26 bytes  received 8 bytes  5.23 bytes/sec

total size is 349  speedup is 10.26

异常问题解决:rsync客户端的秘钥文件也必须是600权限


9 rsync客户端连接慢问题

错误日志输出

2017/03/08 20:14:43 [3422] params.c:Parameter() - Ignoring badly formed line in configuration file: ignore errors

2017/03/08 20:14:43 [3422] name lookup failed for 172.16.1.31: Name or service not known

2017/03/08 20:14:43 [3422] connect from UNKNOWN (172.16.1.31)

2017/03/08 20:14:43 [3422] rsync to backup/ from rsync_backup@unknown (172.16.1.31)

2017/03/08 20:14:43 [3422] receiving file list

2017/03/08 20:14:43 [3422] sent 76 bytes  received 83 bytes  total size 349

正确日志输出

2017/03/08 20:16:45 [3443] params.c:Parameter() - Ignoring badly formed line in configuration file: ignore errors

2017/03/08 20:16:45 [3443] connect from nfs02 (172.16.1.31)

2017/03/08 20:16:45 [3443] rsync to backup/ from rsync_backup@nfs02 (172.16.1.31)

2017/03/08 20:16:45 [3443] receiving file list

2017/03/08 20:16:45 [3443] sent 76 bytes  received 83 bytes  total size 349

异常问题解决:查看日志进行分析


10 rsync服务没有正确启动Connection refused (111)
[root@oldboy-muban ~]#  rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

rsync: failed to connect to 172.16.1.41: Connection refused (111)

rsync error: error in socket IO (code 10) at clientserver.c(124) [sender=3.0.6]

解决 rsync服务没开启

[root@oldboy-muban ~]# rsync --daemon

[root@oldboy-muban ~]# ss -lntup |grep rsync

tcp    LISTEN     0      5                     :::873                  :::*      users:(("rsync",1434,5))

tcp    LISTEN     0      5                      *:873                   *:*      users:(("rsync",1434,4))

[root@oldboy-muban ~]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::backup

Password:

sending incremental file list

hosts

 sent 196 bytes  received 27 bytes  49.56 bytes/sec

total size is 349  speedup is 1.57

11 port 22: Connection refused

环境:本地服务器集群内部传输利用远程ssh 报错

利用(telnet 172.16.1.31 22) 排查服务监听状态后采取的解决方法

[root@oldboy-muban ~]# rsync /etc/hosts 172.16.1.31:/tmp

ssh: connect to host 172.16.1.31 port 22: Connection refused

rsync: connection unexpectedly closed (0 bytes received so far) [sender]

rsync error: error in rsync protocol data stream (code 12) at io.c(600) [sender=3.0.6]

排错思路:

[root@oldboy-muban ~]# ping 172.16.1.31

PING 172.16.1.31 (172.16.1.31) 56(84) bytes of data.

64 bytes from 172.16.1.31: icmp_seq=1 ttl=64 time=0.628 ms

64 bytes from 172.16.1.31: icmp_seq=2 ttl=64 time=0.393 ms

64 bytes from 172.16.1.31: icmp_seq=3 ttl=64 time=1.06 ms

64 bytes from 172.16.1.31: icmp_seq=4 ttl=64 time=0.745 ms



[root@oldboy-muban ~]# traceroute 172.16.1.31

traceroute to 172.16.1.31 (172.16.1.31), 30 hops max, 60 byte packets

 1  nfs01 (172.16.1.31)  0.597 ms  0.189 ms  0.965 ms

/etc/init.d/iptables status

iptables: Firewall is not running.

[root@backup ~]#

[root@backup ~]# netstat -lntup|grep 22

  p        0      0 10.0.0.31:22                0.0.0.0:*                   LISTEN      1187/sshd          

故障原因:无法连接

telnet 172.16.1.31 22

解决方法:

[root@oldboy-backup-41]# vim /etc/ssh/sshd_config

#Port 22

#AddressFamily any

#ListenAddress 10.0.0.31 改为 0.0.0.0

#ListenAddress ::

总结:内网传输通过SSH pro 22 表明22端口链接不上


12 --passwd-file=/etc/rsync.passwd: unknown option 没有正确输入password文件名

报错:--passwd-file=/etc/rsync.passwd: unknown option

错误案例 本地rsync.password 文件要保持一致缺少字母都会报错

echo "123456">>/etc/rsync.pwd

[root@nfs01 ~]# chmod 600 /etc/rsync.pwd

[root@nfs01 ~]# ll /etc/rsync.pwd

-rw------- 1 root root 7 Mar  9 13:47 /etc/rsync.pwd

[root@nfs01 ~]# rsync  -az -P /root/ rsync_backup@172.16.1.41::backup --passwd-file=/etc/rsync.pwd

rsync: --passwd-file=/etc/rsync.passwd: unknown option

rsync error: syntax or usage error (code 1) at main.c(1422) [client=3.0.6]

正确做法:

[root@nfs01 ~]# echo "123456">>/etc/rsync.pwd

[root@nfs01 ~]# chmod 600 /etc/rsync.pwd

[root@nfs01 ~]# ll /etc/rsync.pwd

-rw------- 1 root root 7 Mar  9 13:49 /etc/rsync.pwd

rsync  -az -P /server/files/secure-20161219  rsync_backup@172.16.1.41::backup --password-file=/etc/rsync.pwd

sending incremental file list

secure-20161219

    51053780 100%   14.31MB/s    0:00:03 (xfer#1, to-check=0/1)

rsync: mkstemp ".secure-20161219.lcnuWA" (in backup) failed: Permission denied (13)

 

sent 2210982 bytes  received 27 bytes  491335.33 bytes/sec

total size is 51053780  speedup is 23.09

rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1039) [sender=3.0.6]

 

[root@backup ~]# ls /backup/

100.log          cc.txt       optimize-init_sys.sh

anaconda-ks.cfg 

1)可能是服务没有开启

2)iptables SELinux

3)本次遇见sshd传输受限 限制了传输的ip(安全)


Rsync服务端排错思路

查看rsync服务配置文件路径是否正确 /etc/rsyncd.conf

查看配置文件例的host allow,host deny,允许的ip网段是否是允许客户端访问的ip网段

查看配置文件中path参数里的路径是否存在,权限是否正确(正常应为配置文件中的UUID参数对应的属主和组)

查看rsync服务是否启动,端口是否存在 ps -ef netstat -lntup

查看iptables防火墙和SELinux是否开启允许rsync服务通过,也可以关闭

查看服务端rsync配置文件里的密码权限是否为600 密码文件格式是否正确,正确格式(用户名:密码)文件路径和配置文件里的secrect files 参数对应

如果是推送数据,要查看,配置rsyncd.conf 文件中用户是否对模块下目录有可读的权限


客户端排错思路

查看客户端rsync配置的密码文件是否为600的权限,密码文件格式是否正确,注意:仅需要有密码,并且和服务端的密码一致

用telnet链接rsync服务器ip地址873端口,查看服务是否启动(可测试服务端防火墙是否阻挡telnet10.0.0.100 873)

客户端执行命令是 rsync -avzP rsync_backup@10.0.0.100::backup/test/test/ --password-file=/etc/rsync.password

此命令要记清楚尤其10.0.0.100::backup/test/处的双引号及随后的backup为模块名称