Passenger encountered the following error: The application spawner server exited unexpectedly: Unexpected end-of-file detected.

For me I install the passenger gem with the --pre flag and that caused the problem. I just reinstalled it without the flag and this error went away for me.

I am using Mac OSX 10.7.3

undefined method `except' for "":String

Environment:

Ruby 1.9.2 via rvm, Running phusion passenger with apache and nginx (had to setup virtual host as proxy to get this to run multiple versions of ruby), Rails 3.0.8, Datamapper via the dm-rails gem. Mac OS X.

Error Message:

undefined method `except' for "":String

Problem:
For me this was in my database.yml file. Don't really know what the issue was, but I'm guessing an extra space or tab some where in the defaults section of the database.yml file.

Fix:
All I did was delete the defaults section and of course added the adapter, username, password, host, etc to each corresponding section in the database.yml file.

initialize: not in gzip format (Zlib::GzipFile::Error

Error message:

/opt/ruby-enterprise-1.8.7-2010.02/lib/ruby/site_ruby/1.8/rubygems/package/tar_input.rb:49:in `initialize': not in gzip format (Zlib::GzipFile::Error
 

Problem:

Github may go down/timeout during deploy

Fix:

1. ssh into the server

2. cd to your current deploy folder

3. run bundle show 'name of gem' (shows the location of the gem install)

4. cd to the /gems/ path that is shown in the previous step

5.  run ls -l to see the latest install of the gem

6. run rm -rf on that directory (the latest gem install)

You have already activated rack 1.1.1, but your Gemfile requires rack 1.1.2. Consider using bundle exec.

Error message:

You have already activated rack 1.1.1, but your Gemfile requires rack 1.1.2. Consider using bundle exec.

Problem:
Passenger preloads gems from global gem list if you have passenger spawn method set. My problem is two fold, i was using passenger spawn method and i didn't have version 1.1.2 of rack installed globally.

Fix:

Remove the passenger spawn method from httpd.conf and restart apache

no such file to load -- ./config/../.bundle/environment

Error:
no such file to load -- ./config/../.bundle/environment

Description:
All this means is that i didn't run 'bundle install'

Fix:

Run  'bundle install' on the command line

Failed Shell Script When Running Pidof With Capistrano

Error: failed: "sh -c 'pidof /path/to/app'" on IP

Description: I was deploying my app using capistrano and I was trying to find the pid of a specific program running. I didn't know that pidof returned an exit code of 1 if no program was found with the requested name What this means is that capistrano was receiving a  bad shell command or a failed shell command.

Fix: run "[ `pidof /path/to/app` ] && (echo 'found') || (echo 'not found')", :via => run_method, :as => as

Exception EOFError in spawn manager (Unexpected end-of-file detected.) (process 27930)

ERROR:

/Users/user/.bundle/ruby/1.8/gems/hpricot-0.8.2/lib/fast_xs.bundle: [BUG] Segmentation fault
ruby 1.8.7 (2010-04-19 patchlevel 253) [i686-darwin10.3.0], MBARI 0x6770, Ruby Enterprise Edition 2010.02

*** Exception EOFError in spawn manager (Unexpected end-of-file detected.) (process 27930):
    from /opt/ruby-enterprise-1.8.7-2010.02/lib/ruby/gems/1.8/gems/passenger-2.2.15/lib/phusion_passenger/utils.rb:374:in `unmarshal_and_raise_errors'
    from /opt/ruby-enterprise-1.8.7-2010.02/lib/ruby/gems/1.8/gems/passenger-2.2.15/lib/phusion_passenger/rack/application_spawner.rb:71:in `spawn_application'


DESCRIPTION:
This basically means that I installed a gem (hpricot) from bundler or another system app and now its not compatible with my version of ruby.

FIX:
run "sudo gem install gem-name" at command line, then run bundle unlock, bundle install, bundle pack if you are using bundler.

restart apache or whatever web server software you are using.