[Twisted-Python] twistd and init.d

[Kevin Horn]

Thanks for reporting back to the list, Don.  I'm sure this info will help
someone down the road (maybe even me!)

Kevin Horn

On Thu, Apr 22, 2010 at 9:11 AM, Don Schoeman <don at delphexonline.com> wrote:

>  Hi guys,
>
> I have finally managed to solve this problem. It turns out (as predicted)
> that this is not a twistd problem after all. This particular Ubuntu server
> has an encrypted home directory (enabled through eCryptfs). This means that
> during the boot process the particular home directory from which I tried
> running my tests was not available as even the root user do not have access
> to the home directory until it is de-crypted after the particular user
> actually logs in. This is why the tests ran fine after login but not during
> boot.
>
> For more experienced Linux admins this would have been tracked down within
> minutes but it took me a full day worth of testing before I finally managed
> to track down the problem. To resolve the issue I moved the server to
> /usr/local/lib/python2.6/dist-packages/ghserver and I am now executing it
> from there instead and it starts up during boot just as expected. I am
> extremely relieved!
>
> Thanks all again for your help!
>
> Best Regards,
> Don
>
>
> Don Schoeman wrote:
>
> Hi Jason,
>
> Unfortunately I still have the same problem. However, I now realise that it
> might be a privileges issue of some kind. Being fairly new at linux  this
> may take days to figure out; can you perhaps remember if you enabled your rc
> script using the command update-rc.d? I used it in the following way: sudo
> update-rc.d ghserver defaults
>
> Since this doesn't seem to be a problem related to twisted or twistd
> anymore I will start looking elsewhere for possible solutions.
>
> Thanks for all the help from everyone anyway.
>
> Regards,
> Don
>
>
> Jason J. W. Williams wrote:
>
> Hi Don,
>
> Here's the init.d we use for Twisted on Ubuntu. Sets the full path to Twistd:
> http://gist.github.com/373978
>
> -J
>
> On Wed, Apr 21, 2010 at 5:38 AM, Don Schoeman <don at delphexonline.com> <don at delphexonline.com> wrote:
>
>
>  Hi guys,
>
> My application is being executed using twistd as per documentation. All is
> working fine but I need to have the service start automatically at boot
> time.
>
> So as a test I've created a script in /etc/init.d/ which looks like this:
>
> #! /bin/sh
> ### BEGIN INIT INFO
> # Provides:          ghserver
> # Required-Start:    $local_fs $remote_fs $network $syslog
> # Required-Stop:     $local_fs $remote_fs $network $syslog
> # Default-Start:     2 3 4 5
> # Default-Stop:      0 1 6
> # Short-Description: Start/stop GHServer server
> ### END INIT INFO
>
> logger "GHServer: Start script executed"
> GH_SERVER_PATH="/home/myname/Python/ghserver"
> export PYTHONPATH="$GH_SERVER_PATH:$PYTHONPATH"
>
> case "$1" in
>   start)
>     logger "GHServer: Starting"
>     echo "Starting GHServer..."
>     twistd -y "$GH_SERVER_PATH/ghserverapp.py" -l
> "$GH_SERVER_PATH/ghserver.log" --pidfile "$GH_SERVER_PATH/twistd.pid"
>     ;;
>   stop)
>     logger "GHServer: Stopping"
>     echo "Stopping GHServer..."
>     kill `cat $GH_SERVER_PATH/twistd.pid`
>     ;;
>   *)
>     logger "GHServer: Invalid usage"
>     echo "Usage: /etc/init.d/ghserver {start|stop}"
>     exit 1
>     ;;
> esac
>
> exit 0
>
>
> This works fine when running /etc/init.d/ghserver start and
> /etc/init.d/ghserver stop. The script also run when I boot since the logger
> actually logs the "GHServer: Starting" text to the /var/log/messages file.
> However, my service actually does not start. There is no pid to be found
> anywhere, there are no error logs anywhere, just nothing. I might be doing
> something wrong here but is there someone who's gone through this process
> and can provide some samples how they did it? Any help will be greatly
> appreciated.
>
> Kind Regards,
> Don
>
>
>
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