Would vsftpd not default to using the system username and password?

Question

I downloaded vsftpd-3.0.5.tar.gz and successfully compiled it to generate vsftpd on computer A. Then I copied vsftpd to another computer B and created a new file called vsftpd.conf on computer A. Then, I started vsftpd and could hear the service start through the command netstat -tulnp | grep 21. However, at this point, I was unable to access vsftpd and prompted the following error. Would vstftpd not default to using the system username and password?Must a new username and password be added?

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I see that vsftpd distinguishes between anonymous users, local users, and virtual users. I think my problem should be that I want to log in with a local user login name on another computer C, is that not feasible? Is it just a problem with my vstftpd.conf configuration?

error:

C:\Users\guoya>ftp 192.168.5.2
连接到 192.168.5.2。
500 OOPS: cannot locate user entry:nobody
远程主机关闭连接。

cat /etc/vsftpd/vsftpd.conf

anonymous_enable=NO
anon_upload_enable=NO
anon_mkdir_write_enable=NO
anon_other_write_enable=No
anon_world_readable_only=NO

listen=YES

write_enable=YES
local_enable=YES
local_root=/home/tftpShare
local_umask=022

chroot_local_user=YES
chroot_list_enable=NO

start vsftpd:

# ./vsftpd /etc/vsftpd/vsftpd.conf

netstat -tulnp | grep 21

tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN      553/vsftpd

Answer 1

My problem has been superficially solved by me, but I am still confused. I just want to log in with the username root or other newly added username. Why do I have to execute adduser nobody before adding a new username?

# adduser nobody
Changing password for nobody
New password:
Bad password: too weak
Retype password:
passwd: password for nobody changed by root