rsync常见错误处理 · linux运维

# Rsync服务常见问题汇总讲解： ## 1. rsync服务端开启的iptables防火墙【客户端的错误】 ```sh No route to host ``` 【错误演示过程】 ```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] ``` 【异常问题解决】关闭rsync服务端的防火墙服务（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客户端执行rsync命令错误【客户端的错误】 ```sh The remote path must start with a module name not a / ``` 【错误演示过程】 ```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] ``` 【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. rsync服务认证用户失败***** 【客户端的错误】 ```sh auth failed on module oldboy ``` 【错误演示过程】 ```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] ``` 【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. rsync服务位置模块错误【客户端的错误】 ```sh Unknown module 'backup' ``` 【错误演示过程】 ```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] ``` 【异常问题解决】 /etc/rsyncd.conf配置文件模块名称书写错误 ## 5. rsync服务权限阻止问题【客户端的错误】 ```sh Permission denied ``` 【错误演示过程】 ```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] ``` 【异常问题解决】 1. 备份目录的属主和属组不正确，不是rsync 2. 备份目录的权限不正确，不是755 ## 6. rsync服务备份目录异常【客户端的错误】 ```sh chdir failed ``` 【错误演示过程】 ```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] ``` 【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说明：如果没有备份存储目录 ## 7. rsync服务无效用户信息【客户端的错误】 ```sh invalid uid rsync ``` 【错误演示过程】 ```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] ``` 【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【客户端的错误】 ```sh password file must not be other-accessible ``` 【错误演示过程】 ```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 ``` 【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 IP === 域名反向DNS解析【错误日志信息】 ```sh #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，编写rsync服务端hosts解析文件 ## 10 rsync服务没有正确启动【错误日志信息】 ```sh Connection refused (111) ``` 【错误演示过程】 ```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] ``` 【异常问题解决】 ```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) 未启动xinetd守护进程 ```sh service xinetd start ```