[Nix-dev] lighttpd service

[Alexander Foremny]

Hello,

I am still trying to get a minimal Nix expression for Lighttpd to
work. However, I cannot get the upstart job to behave well. The Nix
expression for the service so far is available on GitHub [1].

I also uploaded the generated upstart job file [2].

What's strange is that starting / stopping the upstart job seems to
hang forever. For instance

> # initctl status lighttpd
> lighttpd stop/waiting
> # initctl start lighttpd
> [ here it hangs forever ]

In another terminal I can see that Lighttpd in fact is successfully
started by upstart.

> # initctl status lighttpd
> lighttpd start/spawned, process 4803

ps reports that the PID inferred by upstart is correct. I then Ctrl-C
out of the hanging initctl start lighttpd. However, trying to initctl
stop the lighttpd job it hangs again without any output. A strace
gives the following last lines.

> # strace initctl stop lighttpd
> recvmsg(3, 0xbffe2b9c, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable)
> clock_gettime(CLOCK_MONOTONIC, {1782, 252572560}) = 0
> poll([{fd=3, events=POLLIN}], 1, -1

However, this time the Lighttpd server process is not being terminated
by upstart! I tried increasing upstart's log verbosity without gaining
any additional insight.

Does anyone of you have an idea of what's going on? Any help would
greatly be appreciated.

Regards,
Alexander Foremny

[1] https://github.com/aforemny/nixos/blob/master/modules/services/web-servers/lighttpd/default.nix
[2] https://gist.github.com/2814308

2012/5/24 Nicolas Pierron <nicolas.b.pierron at gmail.com>:
> Hi,
>
> On Tue, May 22, 2012 at 3:13 PM, Alexander Foremny
> <alexanderforemny at googlemail.com> wrote:
>> I am trying to write a service module for lighttpd. I came up with a
>> minimal example [1] which is giving me the following error upon
>> rebuilding my system.
>
> Nice.  I would be happy to see that.
>
>> How can I make my option services.lighttpd known to NixOS?
>
> Every NixOS file, even your configuration.nix is a module, this means
> that you don't have to build against a custom version of NixOS unless
> you want to modify some of its files.  If you just want to *add* a new
> module, I will recommend you to use the "require" or "imports"
> attribute in your configuration.nix.
>
> So your /etc/nixos/configuration.nix should look like:
>
> {
>  require = [
>    lighttpd/default.nix
>  ];
>
> …
>
> }
>
> The syntax of module is documented in the wiki[1] for more detail.
>
> [1] http://nixos.org/wiki/NixOS:Modules
>
> --
> Nicolas Pierron
> http://www.linkedin.com/in/nicolasbpierron - http://nbp.name/