Puppet users - Aug 2013 - Passenger-Rack error 500: no such file to load -- rack

I have a puppetmaster running within passenger+rack.  It has been running 
properly for almost a year and decided to stop working on the weekend. Now 
I''m getting the Purple "Ruby (Rack) application could not be
started"
screen with
Error: no such file to load -- rack
Application: /data1/rack/puppetmaster
The backtrace is uninspiring. Snippets include:
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb  in 
`gem_original_require''
/usr/share/rubygems/gems/passenger-3.0.17/lib/phusion_passenger/rack/application_spawner.rb
in
`load_rack_app''

I can only guess that a file went missing or got corrupted but have no idea 
where to look.  I tried reinstalling Puppet 3.2.2, passenger & rack with no 
change in behaviour.  Suggestions?

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Hi,

Try loading rack in the ruby irb console.

The other thing is depending on your version of puppet an passenger you will
need a particular rack version. Do a gem list and see if you have more than one
rack gem installed and remove any that may have been recently upgraded.

Can be a bit fiddly.

Den

On 13/08/2013, at 5:53, Larry Fast <lfast1234@gmail.com> wrote:
> I have a puppetmaster running within passenger+rack.  It has been running
properly for almost a year and decided to stop working on the weekend. Now
I''m getting the Purple "Ruby (Rack) application could not be
started" screen with
> Error: no such file to load -- rack
> Application: /data1/rack/puppetmaster
> The backtrace is uninspiring. Snippets include:
> /usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb  in
`gem_original_require''
>
/usr/share/rubygems/gems/passenger-3.0.17/lib/phusion_passenger/rack/application_spawner.rb
in `load_rack_app''
> 
> I can only guess that a file went missing or got corrupted but have no idea
where to look.  I tried reinstalling Puppet 3.2.2, passenger & rack with no
change in behaviour.  Suggestions?
> -- 
> You received this message because you are subscribed to the Google Groups
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> To unsubscribe from this group and stop receiving emails from it, send an
email to puppet-users+unsubscribe@googlegroups.com.
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>  
>  
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Thanks Denmat,
It was probably crosstalk between gems and RPMs. Turns out that the 
rubygems RPM was missing some files.  Likely cause was accidentally 
installing and uninstalling rubygems via non-rpm.  Reinstalling the RPM 
fixed the problem.  For the benefit of others, here''s how we found the 
problem.

rpm -V <packages>   - this checks for pieces missing from the rpm
rpm -e --nodeps <package>  - this removes the offending package and
ignores
the dependencies
yum install <package>  - this reinstalls the package AND rebuilds the 
dependency tree

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