Rsync服务场景问题及解决方法

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Rsync服务常见问题汇总讲解:

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1. rsync服务端开启的iptables防火墙

   客户端的错误现象:No route to host

   [[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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)

   [[email protected] mnt]# /etc/init.d/iptables stop

   iptables: Setting chains to policy ACCEPT: filter          [  OK  ]

   iptables: Flushing firewall rules:                         [  OK  ]

   iptables: Unloading modules:                               [  OK  ]

   [[email protected] mnt]# /etc/init.d/iptables status

   iptables: Firewall is not running.


2. rsync客户端执行rsync命令错误:

   客户端的错误现象:   

   [[email protected] tmp]# rsync -avz /etc/hosts [email protected]::/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 oldboy

   客户端的错误现象:

   [[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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. Unknown module ‘backup‘   

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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

   

5. Permission denied

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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    

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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

[[email protected] 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

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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

[[email protected] tmp]# rsync -avz /etc/hosts [email protected]::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 [email protected] (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 [email protected] (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)

[[email protected] ~]#  rsync -avz /etc/hosts [email protected]::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

[[email protected] ~]# rsync --daemon

[[email protected] ~]# ss -lntup |grep rsync

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

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

[[email protected] ~]# rsync -avz /etc/hosts [email protected]::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


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