Heroku Logs Internal Server Error
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies heroku 500 internal server error of this site About Us Learn more about Stack Overflow the company
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Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges heroku status 500 Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a heroku error codes minute: Sign up How do you diagnose a 500 error on Heroku when there is no error message in the logs? up vote 14 down vote favorite I have a Rails app on Heroku that is serving 500 errors at random intervals. Web pages will display "Internal server error" in plain text, instead of the usual "We're sorry. Something went wrong." page.
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When I refresh the page, it works fine. The logs don't show me an error message, just » 14:20:34.107 2013-10-11 12:20:33.763690+00:00 heroku router - - at=info method=HEAD path=/ host=www.mydomain.com fwd="184.73.237.85/ec2-184-73-237-85.compute-1.amazonaws.com" dyno=web.1 connect=1ms service=63ms status=200 bytes=0 » 14:21:03.957 2013-10-11 12:21:03.561867+00:00 heroku router - - at=info method=GET path=/ host=www.mydomain.com fwd="50.112.95.211/ec2-50-112-95-211.us-west-2.compute.amazonaws.com" dyno=web.1 connect=0ms service=1ms status=500 bytes=21 Support has told me to look at request queuing in New Relic, but New Relic only shows a big red mark saying the server is down (even though the site works fine when refreshed). With no error messages, I'm at a loss for how to diagnose this issue. ruby-on-rails heroku internal-server-error share|improve this question asked Oct 16 '13 at 18:18 lala 78421327 You can try Fiddler... –BTC Oct 16 '13 at 18:24 did you try restarting the app? sometimes the error is during startup. –phoet Oct 16 '13 at 18:55 @JCG could you explain how fiddler could be used in this case? –phoet Oct 16 '13 at 18:56 No, I can't actually...but if it's a web app, and its returning a 500, yo
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Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question http://stackoverflow.com/questions/19410811/how-do-you-diagnose-a-500-error-on-heroku-when-there-is-no-error-message-in-the x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Heroku app throws “Internal Server Error” up vote 2 down vote favorite This app works just http://stackoverflow.com/questions/3070329/heroku-app-throws-internal-server-error fine on my local computer. After pushing it to Heroku, static pages appear to be working but the blog section throws an Internal Server Error. I pulled the logs by running "heroku logs" and this is what I get: ==> production.log <== /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/backends/base.rb:57:in `start' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/server.rb:156:in `start' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/controllers/controller.rb:80:in `start' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/runner.rb:177:in `send' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/runner.rb:177:in `run_command' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/lib/thin/runner.rb:143:in `run!' /home/slugs/215194_e5b887e_c999/mnt/.bundle/gems/gems/thin-1.2.7/bin/thin:6 Something wrong with the eventmachine gem, I suppose....but it works fine on my machine. So I'm not sure what's going on or how to debug it. ruby deployment heroku padrino share|improve this question edited Jun 18 '10 at 14:19 asked Jun 18 '10 at 14:13 picardo 8,8171982131 1 Was an exception thrown? (Looks like a stack trace with the exception message cut out.) –mipadi Jun 18 '10 at 14:22 Could this be it: SQLite3::CantOpenException - unable to open database file: /disk1/home/slugs/215194_38708ba_c999/mnt/.bundle/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/sqlite3_adapter.rb:13:
More Additional Resources Elements Products Pricing Careers Help Status Events Heroku BlogHeroku Blog Find out what's new with Heroku on our blog. https://devcenter.heroku.com/articles/application-offline Visit Blog Log inorSign up Getting Started Reference Learning Reference Heroku Architecture Features Command Line Deployment Troubleshooting Collaboration Security Support Accounts & Billing Organization Accounts Heroku Postgres Heroku Redis Heroku Connect Dev Center Heroku Labs Languages Extending Heroku Changelog Recovering an Offline Application Last updated 09 September 2015 Table of Contents Check internal server your application logs Check your processes Restart your application Test using curl Check application health Review advice for production applications Check platform status Ask for help Your application may be experiencing downtime for a number of reasons. This article will help you discover why and what you can do to remedy the problem. internal server error Check your application logs The first step is to check your application’s logs. Many common application errors as well as Heroku’s errors are printed to your applications logs. To view your logs, run: $ heroku logs Note that many frameworks, including Ruby on Rails, will serve a default error page for your application when there are errors. You can compare this to Heroku’s error page which is used when one of Heroku’s error codes is the cause of the issue. If your logs show one of Heroku’s error codes, you should investigate the cause of this issue. Our descriptions of these errors is the best place to start. Check your processes Check on the current status of your process formation: $ heroku ps This will tell you the current state of your application’s dynos. Ensure you are running the right number of each process type (at least one) and your dynos are booting correctly. $ h