[root@localhost vsftpd]# systemctl restart vsftpd
job for vsftpd.service failed because the control process exited with error code. see 「systemctl status vsftpd.service」 and 「journalctl -xe」 for details.
[root@localhost vsftpd]# journalctl -xe
jul 29 04:47:23 localhost.localdomain systemd[1]: vsftpd.service: control process exited, code=exited st
jul 29 04:47:23 localhost.localdomain systemd[1]: failed to start vsftpd ftp daemon.
– subject: unit vsftpd.service has failed
– defined-by: systemd
– the result is failed.
jul 29 04:47:23 localhost.localdomain systemd[1]: unit vsftpd.service entered failed state.
jul 29 04:47:23 localhost.localdomain systemd[1]: vsftpd.service failed.
jul 29 04:47:23 localhost.localdomain polkitd[674]: unregistered authentication agent for unix-process:7
jul 29 04:47:59 localhost.localdomain polkitd[674]: registered authentication agent for unix-process:746
jul 29 04:47:59 localhost.localdomain systemd[1]: starting vsftpd ftp daemon…
– subject: unit vsftpd.service has begun start-up
– defined-by: systemd
– unit vsftpd.service has begun starting up.
jul 29 04:47:59 localhost.localdomain systemd[1]: vsftpd.service: control process exited, code=exited st
jul 29 04:47:59 localhost.localdomain systemd[1]: failed to start vsftpd ftp daemon.
– subject: unit vsftpd.service has failed
– defined-by: systemd
– the result is failed.
jul 29 04:47:59 localhost.localdomain systemd[1]: unit vsftpd.service entered failed state.
jul 29 04:47:59 localhost.localdomain systemd[1]: vsftpd.service failed.
jul 29 04:47:59 localhost.localdomain polkitd[674]: unregistered authentication agent for unix-process:7
1.出現錯誤的原因是：由於centos7中vsftp的配置檔案預設將 listen_ipv6=yes 這一行沒有注釋掉，而我們目前的網路環境還不支援ipv6，從而導致出現錯誤無法啟動，所以解決方法是將 listen_ipv6=yes更改為：listen_ipv6=no，或將這一行注釋掉
2.檢查對比/etc/vsftpd/下vsftpd.conf配置檔案
[root@localhost vsftpd]# cat vsftpd.conf
anonymous_enable=yes
local_enable=yes
write_enable=yes
local_umask=022
anon_upload_enable=yes
anon_mkdir_write_enable=yes
anon_other_write_enable=yes
dirmessage_enable=yes
xferlog_enable=yes
connect_from_port_20=yes
xferlog_std_format=yes
listen=yes
listen_ipv6=no
再次重啟[root@localhost vsftpd]#systemctl restart vsftpd成功
檢視埠：
[root@localhost vsftpd]# netstat -antp
active internet connections (servers and established)
proto recv-q send-q local address foreign address state pid/program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* listen 1/systemd
tcp 0 0 0.0.0.0:21 0.0.0.0: listen 7583/vsftpd*
tcp 0 0 192.168.122.1:53 0.0.0.0:* listen 1226/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* listen 1009/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* listen 1008/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* listen 1114/master
tcp 0 52 192.168.183.110:22 192.168.183.1:52922 established 2774/sshd: root@pts
tcp6 0 0 :::111 :::* listen 1/systemd
tcp6 0 0 :::22 :::* listen 1009/sshd
tcp6 0 0 ::1:631 :::* listen 1008/cupsd
tcp6 0 0 ::1:25 :::* listen 1114/master
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