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Questions tagged [cedar]

**'Celadon Cedar'** is the newest runtime stack for apps hosted on heroku.com. It is a polyglot platform, supporting multiple languages including Ruby, Python, Java, and Clojure.

'Celadon Cedar' is the newest runtime stack for apps hosted on heroku.com. It is a polyglot platform, supporting multiple languages including Ruby, Python, Java, and Clojure.

Cedar has several improvements over Heroku's earlier stacks:

  • It uses the process model to declare, manage, and run processes across a distributed environment
  • Different types of processes can to scale at different rates to meet demand
  • Aggregate logs and process transparency give users improved process visibility into app behaviour
  • Increased user control over app releases
  • Language support is implemented through modular, customizable buildpacks, allowing developers to add support for any language or framework they need

More information:

For general questions about heroku itself, see the tag.

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Does heroku use rvm?

Does heroku use rvm or rbenv? I'm reading https://github.com/heroku/stack-images/blob/master/bin/cedar-14.sh and there's no mention of rvm. Yet I know for a fact then when you do git push heroku master the apropriate ruby magically manifests itself…
american-ninja-warrior
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Application Error on heroku app after deployment

I have my rails application deployed on heroku. When I tried to push new changes on heroku they asked me to upgrade cedar -14. Then, I ran this command heroku stack:set cedar-14 -a after running this command I deployed my app to…
Rails Developer
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Heroku_can't upgrade to Cedar-14

As requested on Heroku, I am trying to upgrade from Cedar-10 to Cedar-14, but in vain. On my console, When I execute heroku stack:set cedar-14 I get this: `stack:set` is not a heroku command. Even if I've already installed the latest version of…
Abdel
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Ruby on Rails App Heroku Deployment Issue

I am having issues launching my application to Heroku. I am currently working in Ruby on Rails Tutorial chapter 1 and I'm getting the following errors: 1. remote: remote: -----> Ruby app detected remote: -----> Compiling Ruby/Rails remote:…
Megan McDonell
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RJB works fine on Heroku Cedar, inexplicably broken on Cedar 14?

So like a good programmer should, I'm preparing an application for the upcoming transition to Cedar-14. Program works fine on Cedar 10. Doesn't work on Cedar 14, some kind of problem with RJB. When I try to push the app here's the error I…
Jeremy E
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Finding incorrect implementation of JudyArray

I'm trying to give a better error report (possible bug) for this case (about judySArray give incorrect result, but I don't know which key that give incorrect result). The code here from this folder, note on this blog. Dependencies: judySArray.h and…
Kokizzu
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How to start the rails console on Heroku with a multi-buildpack?

I'm deploying to heroku with the multi-buildpack on the cedar stack using a custom procfile: web: bundle exec unicorn -p $PORT -E $RACK_ENV -c ./config/unicorn.rb worker: bundle exec sidekiq -e production -C config/sidekiq.yml console: bundle exec…
RSG
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t("website_title") nil after moving from Heroku Bamboo to Cedar

I just moved my working Heroku app from Bamboo to Cedar, and now it crashes with: Rendered devise/sessions/new.html.erb within layouts/application (4.6ms) ActionView::Template::Error (no implicit conversion of nil into String): 8: <%=…
Nicolas Raoul
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Rails 3.0.20 bamboo to cedar migration

I am about to migrate from the Bamboo stack to the Cedar stack on Heroku. My app has Rails version 3.0.20 and Ruby version 1.93. Does Cedar support Rails version 3.0.20? If not, what is the earliest version of rails supported by Cedar? Trying to…
AmitF
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access version specific value from within Rails app running on Heroku Ceder Stack

I have a Rails 4 app running on the Ceder Stack of Heroku. I use conditional responses based on etag. I have an initialization script which changes the etag value so that each new release requires browser to renew cache: # creates new seed for…
laertiades
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Transitioning custom domains from Cedar stack to Bamboo stack

For an application hosted on Heroku that is still on the Bamboo stack myapp.heroku.com, how would you change over custom domains to point to the Cedar-compatible version myapp-cedar.herokuapp.com on the Cedar stack? Here are the conditions that need…
kristinalim
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Rails. First request slow, times out (40sec), the next ones are faster (1.5 sec). No custom caching, how can that be?

I moved an app from the bamboo stack to cedar and the server is behaving wierdly, it times out on the first request, taking 40sec according to the logs, while the next, same request, takes 1.5 sec. You would think the dyno slept, but I've got 2-3…
oma
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Rails server vs front end web server

I was watching the RailsCast on PageCaching: http://railscasts.com/episodes/89-page-caching-revised and at one point in it Ryan Bates says something along the lines of, "the public directory is set up to serve static files by the front end web…
mackshkatz
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Heroku cedar can't run RUBY

No matter what "heroku run ..." I do I always get the following error: /usr/bin/env: ruby1.9.1: No such file or directory as follows: user@box:~/path$ heroku run rake db:migrate Running `rake db:migrate` attached to terminal... up,…
cesarferreira
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How to specify Cedar to use ree 1.8.7?

I am running a rails 2.3.16 app on Heroku with ruby 1.8.7. I know that I should upgrade to rails 3 but until I have more time I would like to use REE 1.8.7 instead of MRI 1.8.7 on my Heroku app. It appears that Cedar supports REE based…
aaronylee
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