【现象】
[root@instance-6es4pt95 init.d]# systemctl status vsftpd

● vsftpd.service - Vsftpd ftp daemon

Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; disabled; vendor preset: disabled)

Active: inactive (dead)

Mar 24 21:21:29 instance-6es4pt95 systemd[1]: Starting Vsftpd ftp daemon...

Mar 24 21:21:29 instance-6es4pt95 systemd[1]: Started Vsftpd ftp daemon.

Mar 24 21:22:24 instance-6es4pt95 systemd[1]: Stopping Vsftpd ftp daemon...

Mar 24 21:22:24 instance-6es4pt95 systemd[1]: vsftpd.service: Succeeded.

Mar 24 21:22:24 instance-6es4pt95 systemd[1]: Stopped Vsftpd ftp daemon.

Mar 24 21:22:24 instance-6es4pt95 systemd[1]: Starting Vsftpd ftp daemon...

Mar 24 21:22:24 instance-6es4pt95 systemd[1]: Started Vsftpd ftp daemon.

Mar 24 21:22:43 instance-6es4pt95 systemd[1]: Stopping Vsftpd ftp daemon...

Mar 24 21:22:43 instance-6es4pt95 systemd[1]: vsftpd.service: Succeeded.

Mar 24 21:22:43 instance-6es4pt95 systemd[1]: Stopped Vsftpd ftp daemon.

【解决方法】

执行systemctl enable vsftpd.service命令，即可解决。