Rsync服務場景問題及解決方法

Rsync服務常見問題匯總講解：

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1. rsync服務端開啟的iptables防火墻

   客戶端的錯誤現象：No route to host

   [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]

   異常問題解決：

   關閉rsync服務端的防火墻服務（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. rsync客戶端執行rsync命令錯誤：

   客戶端的錯誤現象：   

   [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]

   異常問題解決：

   rsync命令語法理解錯誤，::/backup是錯誤的語法，應該為::backup(rsync模塊)

3. @ERROR: auth failed on module oldboy

   客戶端的錯誤現象：

   [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]

   異常問題解決：

   1. 密碼真的輸入錯誤，用戶名真的錯誤

   2. secrets file = /etc/rsync.password指定的密碼文件和實際密碼文件名稱不一致

   3. /etc/rsync.password文件權限不是600

   4. rsync_backup:123456密碼配置文件后面注意不要有空格

   5. rsync客戶端密碼文件中只輸入密碼信息即可，不要輸入虛擬認證用戶名稱

4. 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]

   異常問題解決：

   1. /etc/rsyncd.conf配置文件模塊名稱書寫錯誤

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]   

   異常問題解決：

   1. 共享目錄的屬主和屬組不正確，不是rsync

   2. 共享目錄的權限不正確，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]

    異常問題解決：

    1. 備份存儲目錄沒有建立

    2. 建立的備份存儲目錄和配置文件定義不一致

[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  ]

說明：如果沒有備份存儲目錄，xinetd服務都不能正確啟動

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]

    異常問題解決：

rsync服務對應rsync虛擬用戶不存在了

8. 客戶端已經配置了密碼文件，但免秘鑰登錄方式，依舊需要輸入密碼

   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

    異常問題解決：

rsync客戶端的秘鑰文件也必須是600權限

9. rsync客戶端連接慢問題

錯誤日志輸出

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

正確日志輸出

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

    異常問題解決：

查看日志進行分析

10 rsync服務沒有正確啟動

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]

解決 rsync服務沒開啟

[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