我在 ubuntu 16.04.5 LTS 上运行 pure-ftpd，上传文件时遇到问题。服务器连接成功，但我无法创建任何目录，也无法上传文件。这似乎是权限问题。
服务器通过 mysql 配置了虚拟用户，每个用户都有一个目录。这曾经有效，但配置可能已更改。
尝试通过 filezilla 连接时：
Status: Resolving address of ftp.example.com
Status: Connecting to myip...
Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Logged in
Status: Retrieving directory listing...
Status: Directory listing of "/" successful
Status: Resolving address of ftp.example.com
Status: Connecting to myip...
Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Logged in
Status: Starting upload of /Users/user/Desktop/test.vcf
Command: CWD /
Response: 550 Can't change directory to /: Permission denied
Command: MKD /
Response: 550 Can't create directory: File exists
Command: CWD /
Response: 550 Can't change directory to /: Permission denied
Command: SIZE /test.vcf
Response: 550 Can't check for file existence
Command: TYPE I
Response: 200 TYPE is now 8-bit binary
Command: PASV
Response: 227 Entering Passive Mode (myip)
Command: STOR /test.vcf
Response: 553 Can't open that file: Permission denied
Error: Critical file transfer error
在服务器站点上：
Feb 12 14:18:33 fx pure-ftpd: ([email protected]) [INFO] Logout.
Feb 12 14:18:33 fx pure-ftpd: ([email protected]) [INFO] New connection from 199.203.151.209
Feb 12 14:18:33 fx pure-ftpd: ([email protected]) [INFO] stangeimmo is now logged in
Feb 12 14:19:34 fx pure-ftpd: ([email protected]) [INFO] Can't change directory to /: Permission denied
Feb 12 14:19:34 fx pure-ftpd: ([email protected]) [ERROR] Can't create directory: File exists
Feb 12 14:19:34 fx pure-ftpd: ([email protected]) [INFO] Can't change directory to /: Permission denied
Feb 12 14:19:35 fx pure-ftpd: ([email protected]) [ERROR] Can't open that file: Permission denied
pure-ftpd 的 mysql 配置文件有以下行：
MYSQLGetDir SELECT CONCAT('/mnt/project/data/ftp-upload/', user) AS Dir FROM ftp_access WHERE User="\L"
我还注意到 .welcome 消息不会显示，不确定这是否也是一个迹象。
文件夹权限为：
rwxrwx--- 218 www users 4096 Feb 12 13:14 ftp-upload/
造成这个问题的原因可能是什么？
答案1
经过几个小时的尝试，我发现父目录的权限阻止虚拟用户读取他们自己的主目录。提示：如果您使用默认的 chroot jail，则主目录将被报告为 root (/)。
尝试验证用户是否可以读取所有父目录。
就我而言...
有一个名为 的系统用户ftpuser。虚拟用户 ，bob其 uid 为ftpuser，主目录为/srv/ftp-home/bob。示例命令：pure-pw useradd bob -u ftpuser -d /srv/ftp-home/bob
好吧，/srv/ftp-home必须由 root 拥有，以便 pure-ftpd 自动创建缺少的主目录，因此ls -l该目录是drwx------ 1 root root ...
我使用了chgrp ftpuser /srv/ftp-home和chmod g+rx /srv/ftp-home以便将权限更改为drwxr-x--- 1 root ftpuser ...。此后用户就可以登录了。
我希望这可以为某些人节省几个小时的头脑风暴。