rsync常見錯誤處理 · linux運維

# Rsync服務常見問題匯總講解： ## 1. rsync服務端開啟的iptables防火墻【客戶端的錯誤】 ```sh No route to host ``` 【錯誤演示過程】 ```sh [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） ```sh [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】 ```sh The remote path must start with a module name not a / ``` 【錯誤演示過程】 ```sh [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. rsync服務認證用戶失敗***** 【客戶端的錯誤】 ```sh auth failed on module oldboy ``` 【錯誤演示過程】 ```sh [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. rsync服務位置模塊錯誤【客戶端的錯誤】 ```sh Unknown module 'backup' ``` 【錯誤演示過程】 ```sh [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】 /etc/rsyncd.conf配置文件模塊名稱書寫錯誤 ## 5. rsync服務權限阻止問題【客戶端的錯誤】 ```sh Permission denied ``` 【錯誤演示過程】 ```sh [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. 備份目錄的屬主和屬組不正確，不是rsync 2. 備份目錄的權限不正確，不是755 ## 6. rsync服務備份目錄異常【客戶端的錯誤】 ```sh chdir failed ``` 【錯誤演示過程】 ```sh [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說明：如果沒有備份存儲目錄 ## 7. rsync服務無效用戶信息【客戶端的錯誤】 ```sh invalid uid rsync ``` 【錯誤演示過程】 ```sh [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【客戶端的錯誤】 ```sh password file must not be other-accessible ``` 【錯誤演示過程】 ```sh [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 IP === 域名反向DNS解析【錯誤日志信息】 ```sh #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，編寫rsync服務端hosts解析文件 ## 10 rsync服務沒有正確啟動【錯誤日志信息】 ```sh Connection refused (111) ``` 【錯誤演示過程】 ```sh [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] ``` 【異常問題解決】 ```sh [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 rsync: read error: Connection reset by peer (104) 未啟動xinetd守護進程 ```sh service xinetd start ```