Rails - May 2006 - Capistrano won''t spawn fcgi processes

I''ve ran into quiet an annoying problem: I have a Capistrano task  
that is supposed to run a shell script. The script restarts a rails  
application by first killing all active fcgi processes and then  
spawning new ones again. The shell script works fine when executed  
locally on the server but running this in a Capistrano task will  
simply not work.

The task is simple:

desc "ReStart Rails"
task :rails_app_restart, :roles => :app do
   run "#{home_directory}/etc/rc.d/restart_rails.sh"
end

my restart_rails.sh:

if [ -e home_dir/var/run/app-0.pid ]; then kill -9 `cat home_dir/var/ 
run/app-0.pid`; echo ''Killed home_dir/var/run/app-0.pid''; fi
if [ -e home_dir/var/run/app-0.pid ]; then rm -f home_dir/var/run/ 
app-0.pid; echo ''Force deleted home_dir/var/run/app-0.pid''; fi
if [ ! -e home_dir/var/run/app-0.pid ]; then RAILS_ENV=production / 
usr/local/bin/spawn-fcgi -f base_path/current/public/dispatch.fcgi -s  
home_dir/var/run/app-0.socket -P home_dir/var/run/app-0.pid; else  
echo ''home_dir/var/run/app-0.pid already exists.''; fi
if [ -e home_dir/var/run/app-1.pid ]; then kill -9 `cat home_dir/var/ 
run/app-1.pid`; echo ''Killed home_dir/var/run/app-1.pid''; fi
if [ -e home_dir/var/run/app-1.pid ]; then rm -f home_dir/var/run/ 
app-1.pid; echo ''Force deleted home_dir/var/run/app-1.pid''; fi
if [ ! -e home_dir/var/run/app-1.pid ]; then RAILS_ENV=production / 
usr/local/bin/spawn-fcgi -f base_path/current/public/dispatch.fcgi -s  
home_dir/var/run/app-1.socket -P home_dir/var/run/app-1.pid; else  
echo ''home_dir/var/run/app-1.pid already exists.''; fi

Again, no problem running this script directly. But when Capistrano  
runs it, no processes are created even though the command output  
indicates that everything was executed correctly. In fact, the socket  
and pid files are created just fine by the cap task. The two fcgi  
processes, however, never start. There''re no errors indicating any  
kind of trouble.

I just can''t think of a single reason why this would start up fine  
when running the script from the command line but not when executed  
remotely via capistrano (and despite the good command output).  
Anybody has an ideas where the problem could be? Thank you very much.

Sebastian

Sebastian Friedrich wrote:
> I''ve ran into quiet an annoying problem: I have a Capistrano task
that
> is supposed to run a shell script. The script restarts a rails 
> application by first killing all active fcgi processes and then spawning 
> new ones again. The shell script works fine when executed locally on the 
> server but running this in a Capistrano task will simply not work.
Here''s one answer: http://tinyurl.com/jx4bk

-- 

Ray

thanks. unfortunately the answer didn''t yet solve the problem. the  
problem seems to have nothing to do with the script itself but with  
the way capistrano executes it. If anybody has any idea, please have  
a look at the ongoing discussion on technoweenie: http://tinyurl.com/ 
jx4bk Thanks and sorry for the x-posting.

Sebastian


On May 23, 2006, at 5:58 AM, Ray Baxter wrote:
> Sebastian Friedrich wrote:
>> I''ve ran into quiet an annoying problem: I have a Capistrano
task
>> that is supposed to run a shell script. The script restarts a  
>> rails application by first killing all active fcgi processes and  
>> then spawning new ones again. The shell script works fine when  
>> executed locally on the server but running this in a Capistrano  
>> task will simply not work.
>
> Here''s one answer: http://tinyurl.com/jx4bk
>
> -- 
>
> Ray
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>