故障索引
| Rsync同步备份故障: | ||
|---|---|---|
| 1.not a regular file | 不是普通的文件 | |
| 2.cannot delete non-empty directory | 无法删除非空目录 | |
| 3.Connection refused | 连接拒绝 | |
| 4.auth failed on module data auth | 模块数据失败 | |
| 5.Unknown module 'data' | 未知的模块的数据 | |
| 6.secrets file must be owned by root when running as root | 秘密文件 | |
| 7.read error: Connection reset by peer (104) | 读取错误：由对等方重置连接 | |
| 8.password file must not be other-accessible | 密码文件不能是其他可访问的 | |
| 9.denied on module data from UNKNOWN | 未知模块'数据' | |
| 10.chdir failed | 失败 | |
| 11.invalid uid rsync | 无效的用户 rsync | |
| 12.getcwd: cannot directories | getcwd 无法定位到当前目录 | |
| 13.failed to create pid file /var/run/rsyncd.pid: File exists | Rsync 服务器启动错误 | |
| 14.auth failed on module backup | 身份验证模块备份失败 |
| NFS网络文件系统: | |
|---|---|
| 1.access denied by server | 权限拒绝 |
| 2.Program not registered | 检查挂载信息失败没有注册 |
| 3.wrong fs type | 错误的文件系统类型 |
| 4.Read-only file system | 文件只读 |
1. not a regular file 不是普通的文件
scp默认只能复制普通文件 与cp类似
scp加一个 -r 参数就好了
[12:37 root@backup ~]# scp /etc 172.16.1.31:nfs01/tmp/
root@172.16.1.31's password:
/etc: not a regular file
2.cannot delete non-empty directory 无法删除非空目录
symlink: 软链接 导致报错，可能已经备份过了
[12:39 root@backup ~]# rsync -av /etc 172.16.1.31:/tmp/
root@172.16.1.31's password:
sending incremental file list
cannot delete non-empty directory: etc/init.d
could not make way for new symlink: etc/init.d
cannot delete non-empty directory: etc/rc0.d
could not make way for new symlink: etc/rc0.d
.....
..
3.Connection refused 连接拒绝
检查是否能ping通对应服务器
[12:41 root@backup ~]# rsync -avz /etc 176.16.1.31:/tmp
ssh: connect to host 176.16.1.31 port 22: Connection refused
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: unexplained error (code 255) at io.c(226) [sender=3.1.2]
4.auth failed on module data
data模块认证错误（密码）
原因：
1.密码写错
2.密码文件不存在
3.密码文件权限不对
4.没有创建data这个目录
[root 16:15 @ backup ~]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::data
Password:
@ERROR: auth failed on module data
rsync error: error starting client-server protocol (code 5) at main.c(1648) [sender=3.1.2]
原因：密码文件权限没有更改为600
[root 16:25 @ backup ~]# ll /etc/rsync.password
-rw-r--r-- 1 root root 20 May 20 16:05 /etc/rsync.password
解决办法：更改文件权限位600
[root 16:25 @ backup ~]# chmod 600 /etc/rsync.password
[root 16:25 @ backup ~]# ll /etc/rsync.password
-rw------- 1 root root 20 May 20 16:05 /etc/rsync.password
5.Unknown module 'data' 未知的设备模块
没有权限
[17:45 root@nfs01 ~]# rsync -avz /etc/hostname rsync_backup@10.0.0.41::data --password-file=/etc/rsync.password
@ERROR: Unknown module 'data'
rsync error: error starting client-server protocol (code 5) at main.c(1648) [sender=3.1.2]
服务端查看rsyncd.conf ，准许哪些主机可以访问
hosts allow = 172.16.1.0/24
#hosts deny = 0.0.0.0/32
6.秘密文件
日志中
密码文件问题
查看日志的提示：
019/05/20 16:52:32 [15755] secrets file must be owned by root when running as root (see strict modes)
2019/05/20 16:52:32 [15755] auth failed on module data from backup (172.16.1.41) for rsync_backup: ignoring secrets file
secrets file must be owned by root when running as root (see strict modes)
密码文件当root运行rsync的时候，必须属于root
[root@backup ~]# ll /etc/rsync.password
-rw------- 1 rsync rsync 20 May 20 16:49 /etc/rsync.password
7.read错误：由对等方重置连接
配置文件错误
[root@backup ~]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::data
sending incremental file list
rsync: read error: Connection reset by peer (104)
rsync error: error in socket IO (code 10) at io.c(785) [sender=3.1.2]
8.密码文件不能是其他可访问的
rsync -avz /etc/sysconfig/ rsync_backup@172.16.1.91::backup --password-file=/etc/rsync.password
ERROR: password file must not be other-accessible
rsync error: syntax or usage error (code 1) at authenticate.c(196) [sender=3.1.2]
9.未知模块'数据'
@ERROR：未知模块'数据'
2019/05/20 17:45:46 [10514] rsync denied on module data from UNKNOWN (10.0.0.31)
10.@ERROR: chdir failed
没有创建data备份这个目录
[20:35 root@backup ~]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::data
Password:
@ERROR: chdir failed
rsync error: error starting client-server protocol (code 5) at main.c(1648) [sender=3.1.2
解决办法：
[20:35 root@backup ~]# mkdir -p /data
[20:38 root@backup ~]# chown rsync.rsync /data/
[20:39 root@backup ~]# ll -d /data/
drwxr-xr-x 2 rsync rsync 6 May 20 20:38 /data/
[20:39 root@backup ~]# rsync -avz /etc/hosts rsync_backup@172.16.1.41::data
Password:
sending incremental file list
hosts
sent 140 bytes received 43 bytes 52.29 bytes/sec
total size is 158 speedup is 0.86
11.invalid uid rsync 无效的uid rsync
推送到的接收端可能没有rsync这个虚拟用户
[09:40 root@nfs01 ~]# rsync -avz /etc/profile rsync_backup@172.16.1.41::data --password-file=/etc/rsync.password
@ERROR: invalid uid rsync
rsync error: error starting client-server protocol (code 5) at main.c(1648) [sender=3.1.2]
去接收端服务器看一下：
[09:41 root@backup ~]# id rsync
id: rsync: no such user \\没有这个用户
12.getcwd: cannot directories
getcwd 命令无法定位到当前工作目录。一般来说是因为 cd 到了某个目录之后 rm 了这个目录，这时去执行某些 service 脚本的时候就会报 getcwd 错误。只需要 cd 到任何一个实际存在的目录下在执行命令即可。
[root@nfs01 /backup/172.16.1.31]# sh /tmp/rsync.sh
shellinit: error retrieving current directory: getcwd: cannot directories: No such file or directory
/usr/bin/tar: Removing leading `/' from member names
13.failed to create pid file /var/run/rsyncd.pid: File exists
Rsync 服务器启动错误
[13:25 root@backup ~]# rsync --daemon
[13:28 root@backup ~]# failed to create pid file /var/run/rsyncd.pid: File exists
解决方案：
rm -rf /var/run/rsyncd.pid；再重新启动Rsync服务（rsync --daemon）
[13:28 root@backup ~]# rm -rf /var/run/rsyncd.pid
[13:29 root@backup ~]# rsync --daemon
[13:30 root@backup ~]# netstat -lutup|grep rsync
tcp 0 0 0.0.0.0:rsync 0.0.0.0:* LISTEN 8585/rsync
tcp6 0 0 [::]:rsync [::]:* LISTEN 8585/rsync
14.auth failed on module backup 身份验证模块备份失败
[13:36 root@backup ~]# 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(1648) [sender=3.1.2]
查看服务端和客户端的密码文件的权限是否为600
查看密码是否正确还有一个深坑就是密码中有没有空格,把空格删除掉就可以了
image
二、nfs服务
1.权限拒绝
/etc/exports中指定的网段是172.16.1.31,这里是10.0.0.7外网段
[16:43 root@web01 ~]# mount -t nfs 10.0.0.7:/upload/ /video/
mount.nfs: access denied by server while mounting 10.0.0.7:/upload/
2.检查挂在信息失败
[16:51 root@nfs01 ~]# showmount -e 172.16.1.31
clnt_create: RPC: Program not registered
解决：nfs服务重启一下
[16:51 root@nfs01 ~]# systemctl restart nfs
[16:52 root@nfs01 ~]# showmount -e 172.16.1.31
Export list for 172.16.1.31:
/upload 172.16.1.0/24
3.wrong fs type
错误的文件系统类型 nfs文件系统无法识别
没有安装nfs-utils
[16:51 root@nfs01 ~]# mount -t nfs 172.16.1.31:/data /mnt/
mount: wrong fs type, bad option, bad superblock on 172.16.1.31:/data,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so
4.Read-only file system文件只读
在NFS服务挂载的/mnt/目录创建文件
[09:33 root@nfs01 /]# df -h
172.16.1.31:/data 19G 1.7G 18G 9% /opt
[09:33 root@nfs01 /]# touch /opt/1.txt
touch: cannot touch ‘/opt/1.txt’: Read-only file system
解决:/etc/exports的权限是只读访问
[09:33 root@nfs01 /]# vim /etc/exports
#share /data
/data 172.16.1.0/24(ro,sync,all_squash)
