在用apt install deluged装好后，一直没有办法实现作为服务启动，原因是包内附带的启动脚本是基于SysV的，而其中使用到的/lib/lsb/init-functions在Ubuntu 16.04 LTS下默认没有x权限。

解决方法

主体思路是重写一份systemd版本的service。

安装deluge

apt install deluged

清理余毒

rm /etc/init.d/deluged
update-rc.d deluged remove

编写service文件

/etc/systemd/system/deluged.service

[Unit]
Description=Deluge Bittorrent Client Daemon
After=network-online.target

[Service]
Type=forking
PIDFile=/run/deluged/deluged.pid
User=debian-deluged
Group=debian-deluged
UMask=0027

# Make directory for PID file
PermissionsStartOnly=true
ExecStartPre=-/bin/rm -rf /run/deluged
ExecStartPre=/bin/mkdir /run/deluged
ExecStartPre=/bin/chown debian-deluged:debian-deluged /run/deluged

ExecStart=/usr/bin/deluged -c /var/lib/deluged/config -P /run/deluged/deluged.pid -l /var/log/deluged/daemon.log -L info

Restart=on-failure

# Configures the time to wait before service is stopped forcefully.
TimeoutStopSec=300
KillMode=mixed

[Install]
WantedBy=multi-user.target

启用service

systemctl enable /etc/systemd/system/deluged.service
systemctl start deluged
systemctl status deluged

其他

实际上WebUI（deluge-web）也需要类似的配置。
/etc/systemd/system/deluge-web.service

[Unit]
Description=Deluge Bittorrent WebUI Daemon
After=network-online.target

[Service]
Type=simple
User=debian-deluged
Group=debian-deluged
UMask=0027

ExecStart=/usr/bin/deluge-web -c /var/lib/deluged/config

Restart=on-failure

# Configures the time to wait before service is stopped forcefully.
TimeoutStopSec=5
KillMode=mixed

[Install]
WantedBy=multi-user.target

另外，通过对/usr/lib/python2.7/dist-packages/deluge/ui/web/server.py做如下修改可以使WebUI仅可从本地访问（利用反向代理等方式来远程访问）：

674c674
<         self.socket = reactor.listenTCP(self.port, self.site)
---
>         self.socket = reactor.listenTCP(self.port, self.site, interface='127.0.0.1')