I've been beating my head against RHEL 7 (CentOS 7) trying to set up a puppet master. I'm using IPA and NSS for certificate management, and those problems appear to be solved.
I can run the puppet master daemon (Webrick default) and connect from an agent successfully, but passenger throws 500 exceptions and a diagnostic page.
I tried changing the config.ru to a simple "hello world" web app, and that runs successfully, so the hook through Apache to Passenger seems successful.
I suspected problems with systemd and the fact that passenger makes heavy use of the /tmp directory. I tracked down the httpd service file and set PrivateTmp=false, and confirmed that passenger stopped using the private /tmp directory. This had no effect on the fail.
Here is the stack trace reported on the passenger 500 page:
exit (SystemExit)
/usr/share/ruby/vendor_ruby/puppet/util.rb:493:in `exit'
/usr/share/ruby/vendor_ruby/puppet/util.rb:493:in `rescue in exit_on_fail'
/usr/share/ruby/vendor_ruby/puppet/util.rb:479:in `exit_on_fail'
/usr/share/ruby/vendor_ruby/puppet/application.rb:369:in `run'
/usr/share/ruby/vendor_ruby/puppet/util/command_line.rb:137:in `run'
/usr/share/ruby/vendor_ruby/puppet/util/command_line.rb:91:in `execute'
config.ru:35:in `block in '
/usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
/usr/local/share/gems/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
config.ru:1:in `new'
config.ru:1:in `'
/usr/local/share/gems/gems/passenger-4.0.48/helper-scripts/rack-preloader.rb:112:in `eval'
/usr/local/share/gems/gems/passenger-4.0.48/helper-scripts/rack-preloader.rb:112:in `preload_app'
/usr/local/share/gems/gems/passenger-4.0.48/helper-scripts/rack-preloader.rb:158:in `'
/usr/local/share/gems/gems/passenger-4.0.48/helper-scripts/rack-preloader.rb:29:in `'
/usr/local/share/gems/gems/passenger-4.0.48/helper-scripts/rack-preloader.rb:28:in `'
I'd love some suggestions for troubleshooting this problem. My fallback is to ditch RHEL 7 for 6.5.
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