我在我的生产Ubuntu服务器（在EC2上）安装了Snap/Haskell，并检出了我的项目 - 但我该如何运行它？
我的意思是，在本地，我通过命令行运行它：
project-name -p 8000
将Snap应用程序编译为二进制文件，然后借助upstart作为服务运行。
Compile your webapp. For the sake of this example, we'll assume the webapp is at /home/john/webapps/mysite:
$ cd /home/john/webapps/mysite
$ cabal install
...
Preprocessing executable 'mysite` for 'mysite-0.1'...
Installing executable(s) in /home/john/.cabal/bin
As we can see the, the binary is placed in /home/john/.cabal/bin. You may move it to any place you like, but we'll leave it there.
Create a log in your application folder, otherwise snap will complain:
$ mkdir /home/john/webapps/mysite/log
Now we will create a service that will run our webapp. To do so we will use Ubuntu's service facility called upstart.
a) We name our service simply by creating a conf file with the desired name in the /etc/init/ directory. Let's call it mysite:
$ sudo vi /etc/init/mysite.conf
b) Now let's add the description of what our service is:
start on startup
chdir /home/john/webapps/mysite
exec /home/john/.cabal/bin/mysite -p 80
First, we say that the service should run on startup (or on bootup) of the system.
Second, since snap needs it's snaplets and other static resources (like the log directory we created earlier) - we tell the service to run inside our project's directory.
Lastly, we specify the binary that actually will run as a service: /home/john/.cabal/bin/mysite. We pass the -p 80 parameter to the snap webserver to make it run on port 80. (Note: you have to disable all apache and nginx servers, so that they don't take up that port any more)
Done. You can check if it is running and start it manually if you need to:
initctl list | grep mysite
initctl start mysite
是的，snap-server是自己的服务器，这意味着编译您的Haskell/Snap应用程序将生成一个可执行文件，您可以在命令行上运行该文件来托管您的网站。就是这样，没有像Apache或Nginx这样的外部服务器可供使用。如果需要，您可以设置反向代理，但这取决于您。
这是我在大多数重要部署中所做的：
cabal-dev/bin/myapp -p 8010 -e prod +RTS -A4M -qg1HUP信号，监视应用程序会将其重新启动。希望这有所帮助。
由于它是Ubuntu，您几乎总是最好使用upstart来管理它。
man 5 init
除其他外，它还允许您为服务设置依赖关系层次结构。"snapapp依赖于mongodb，因此在mongodb运行之前不要启动snapapp" - 就是这样。
是的，snap是一个Web服务器，但我们几乎总是在它们前面放置nginx，而snap应用程序仅在本地主机上监听，并且使用proxy_path指向服务器或一组服务器。
有趣的是，我们在$work的新开发中几乎完全转向了Common Lisp，设置完全相同。
screen -S snapd -d -m -L project-name -p 8000，然后您可以通过screen -r snapd -X quit停止该进程。 - Daniel Leschkowski