Rsync 故障排查整理
Rsync服務常見問題彙總講解：

1 客戶端的錯誤現象：No route to host
rsync服務端開啓的iptables防火牆

[root@nfs01 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]

異常問題解決：

   關閉rsync服務端的防火牆服務（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.

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

 異常問題解決：

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

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3 @ERROR: auth failed on module backup

@ERROR: auth failed on module oldboy

客戶端的錯誤現象：

[root@nfs01 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]

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密碼配置文件後面注意不要有空格

   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

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4 @ERROR: Unknown module 'backup'

Unknown module 'backup'

[root@nfs01 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]

 異常問題解決：

   1、 /etc/rsyncd.conf配置文件模塊名稱書寫錯誤

   2、配置文件中網段限制不對

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5 Permission denied
[root@nfs01 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]

 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

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6 chdir failed
[root@nfs01 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]

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服務都不能正確啓動

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7 invalid uid rsync
[root@nfs01 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]

異常問題解決：

rsync服務對應rsync虛擬用戶不存在了

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8 客戶端已經配置了密碼文件，但免祕鑰登錄方式，依舊需要輸入密碼
password file must not be other-accessible

[root@nfs01 tmp]# rsync -avz /etc/hosts [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

異常問題解決：

rsync客戶端的祕鑰文件也必須是600權限

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9 rsync客戶端連接慢問題
錯誤日誌輸出

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

正確日誌輸出

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：

查看日誌進行分析

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10 rsync服務沒有正確啓動Connection refused (111)
[root@oldboy-muban ~]# 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]

解決 rsync服務沒開啓

[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 [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

==============================================================================================

11 port 22: Connection refused
環境：本地服務器集羣內部傳輸利用遠程ssh 報錯

利用（telnet 172.16.1.31 22）排查服務監聽狀態後採取的解決方法

[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]

排錯思路：

[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：無法連接

telnet 172.16.1.31 22

解決方法：

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

#Port 22

#AddressFamily any

#ListenAddress 10.0.0.31 改爲 0.0.0.0

#ListenAddress ::

總結：內網傳輸通過SSH pro 22 表明22端口鏈接不上

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12 --passwd-file=/etc/rsync.passwd: unknown option 沒有正確輸入password文件名
報錯：--passwd-file=/etc/rsync.passwd: unknown option

錯誤案例本地rsync.password 文件要保持一致缺少字母都會報錯

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

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

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

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

[root@nfs01 ~]# rsync -az -P /root/ [email protected]::backup --passwd-file=/etc/rsync.passwd

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

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

正確做法：

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

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

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

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

rsync -az -P /server/files/secure-20161219 [email protected]::backup --password-file=/etc/rsync.password

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）可能是服務沒有開啓

  2）iptables SELinux

  3）本次遇見sshd傳輸受限 限制了傳輸的ip（安全）

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Rsync服務端排錯思路
m 查看rsync服務配置文件路徑是否正確 /etc/rsyncd.conf

m 查看配置文件例的host allow，host deny，允許的ip網段是否是允許客戶端訪問的ip網段

m 查看配置文件中path參數裏的路徑是否存在，權限是否正確（正常應爲配置文件中的UUID參數對應的屬主和組）

m 查看rsync服務是否啓動，端口是否存在 ps -ef netstat -lntup

m 查看iptables防火牆和SELinux是否開啓允許rsync服務通過，也可以關閉

m 查看服務端rsync配置文件裏的密碼權限是否爲600 密碼文件格式是否正確，正確格式（用戶名：密碼）文件路徑和配置文件裏的secrect files 參數對應

m 如果是推送數據，要查看，配置rsyncd.conf 文件中用戶是否對模塊下目錄有可讀的權限

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客戶端排錯思路
m 查看客戶端rsync配置的密碼文件是否爲600的權限，密碼文件格式是否正確，注意：僅需要有密碼，並且和服務端的密碼一致

m 用telnet鏈接rsync服務器ip地址873端口，查看服務是否啓動（可測試服務端防火牆是否阻擋telnet10.0.0.100 873）

m 客戶端執行命令是 rsync -avzP [email protected]::backup/test/test/ --password-file=/etc/rsync.password

m 此命令要記清楚尤其10.0.0.100::backup/test/處的雙引號及隨後的backup爲模塊名稱

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Rsync 故障排查整理(經典)

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Rsync 故障排查整理(經典)

Rsync 故障排查整理Rsync服務常見問題彙總講解：

Rsync 故障排查整理
Rsync服務常見問題彙總講解：