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Full Discussion: 500 OOPS: vsftpd: cannot locate user specified in 'ftp_username':ftp
Operating Systems Linux Ubuntu 500 OOPS: vsftpd: cannot locate user specified in 'ftp_username':ftp Post 302210964 by thomn8r on Wednesday 2nd of July 2008 10:11:41 AM
Old 07-02-2008
500 OOPS: vsftpd: cannot locate user specified in 'ftp_username':ftp
I've been tearing my hair out over this: vsftp does not work on any of my RedHat Server 5.x systems - I keep getting a variation on 500 OOPS: vsftpd: cannot locate user specified in 'ftp_username':ftp or 500 OOPS: cannot locate user entry:nobody (different errors on different systems). I spent some time on google trying to find a solution, to no avail. I even tried to build from source but ran into other issues.

No matter what I change the ftp_username value to, I get the same result.

The ftp & nobody users exists in /etc/passwd
Code:
ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin

Here's my vsftpd.conf file (comments removed for brevity)
Code:
anonymous_enable=YES
local_enable=YES
write_enable=YES
local_umask=022
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_std_format=YES
nopriv_user=ftp
listen=YES
pam_service_name=vsftpd
userlist_enable=NO
tcp_wrappers=YES
check_shell=NO
ftp_username=ftp

/etc/nsswitch.conf
Code:
passwd:       files [NOTFOUND=continue] nis
group:        files [NOTFOUND=continue] nis
hosts:        dns [NOTFOUND=continue UNAVAIL=continue TRYAGAIN=continue] nis [NOTFOUND=continue UNAVAIL=continue TRYAGAIN=continue] files
networks:     nis [NOTFOUND=return] files
protocols:    nis [NOTFOUND=return] files
rpc:          nis [NOTFOUND=return] files
publickey:    nis [NOTFOUND=return] files
netgroup:     nis [NOTFOUND=return] files
automount:    nis files
aliases:      nis files
services:     nis files

Code:
# ps -ef|grep vsftp
root     28607     1  0 Jul01 ?        00:00:00 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

 

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nsquery

nsquery(1)						      General Commands Manual							nsquery(1)

NAME

       nsquery - query the Name Service Switch backend libraries

SYNOPSIS

       lookup_type lookup_query [lookup_policy]

DESCRIPTION

       is  used to find the Name Service that returned the response to a or function call.  This application is Name Service Switch aware and fol-
       lows the lookup policies in The supported lookup_type values are:

	      Used to resolve host name or IP Address lookups.

	      Used to resolve user name or UID lookups.
			     Assumes that a numeric value is a UID.  This option is to be obsoleted.  Use and instead.

	      Used to resolve user name lookups.

	      Used to resolve UID lookups.

	      Used to resolve group name or GID lookups.
			     Assumes that a numeric value is a GID.  This option is to be obsoleted.  Use and instead.

	      Used to resolve group name lookups.

	      Used to resolve GID lookups.

	      Used to resolve host name or IP Address lookups.
			     Only IPv6 and IPv4-mapped IPv6 address will be displayed for host name lookups.

       The lookup_query can either be a host name, IP Address (IPv4 only), user name, user ID, group name, or group ID.

       The lookup_policy must be a valid lookup policy described in nsswitch.conf(4).  If the policy is invalid, the system default policy will be
       used.  The default values for lookup_policy are:

	      dns [NOTFOUND=return] nis [NOTFOUND=return] files

	      files nis

	      files nis

	      dns [NOTFOUND=return] files

       will display the lookup policy being used, the name of the service being queried, and the result of the query.

EXAMPLES

       Lookup host hondo using the default hosts lookup policy.

       Lookup host with ip address 15.204.204.204 using "dns files" as the hosts lookup policy.

       Lookup user dog using "ldap" as the passwd lookup policy.

       Lookup user ID 105 using the default passwd lookup policy.

       Lookup group wayne using group lookup policy "nis [NOTFOUND=RETURN] files".

       Lookup group 22 using the default group lookup policy.

       Lookup host rio using "dns" as the ipnodes lookup policy.

RETURN VALUE

       returns the following values:

       Success.
       Invalid Usage.
       Unknown Action.
       No match found in any name services queried.

WARNINGS

       The and lookup_type values are to be obsoleted.	For use or instead.  For use or instead.

AUTHOR

       was developed by Hewlett-Packard.

SEE ALSO

       nsswitch.conf(4).

																	nsquery(1)
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