#377 Trinidad pro

Aug 30, 2012 | 15 minutes | Performance, Tools, Deployment, Production

Trinidad is designed to serve JRuby web applications and gives you the power of Java while still keeping the feel of traditional Rails deployment. Here I show how to setup a Capistrano recipe, configure it, and more.

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Andy L about 12 years ago

Is unicorn compatible with jruby ??

Karol Bucek about 12 years ago

no, Unicorn (similar to Mongrel) uses some native code thus it won't compile on JRuby.

Luca Simone about 12 years ago

Trinidad is fantastic but do you plan or have considered an episode on Torquebox? (http://torquebox.org)
It has messaging, websockets, cluster, and many other awesome features!

4ware about 12 years ago

I second this one! While trinidad is kind of like the first step, the logigac next one is using a whole application server like jboss / torquebox.

Tyler Smart about 12 years ago

I use torquebox and it is great. I don't have to deploy memcached, resque, use cron, etc. All encapsulated in one system, JBOSS.

Basukrumi about 12 years ago

Thanks!

Karol Bucek about 12 years ago

Ryan did not mention this explicitly, but it might not be obvious to some: You do not have to "deal" with Capistrano + JRuby 1.7 issues (Highline, SSH Forwarding). It's perfectly fine to use MRI while invoking the cap commands on your machine, you "only" need JRuby on the remote server where Trinidad lives.

One might also consider using the current "stable" version of JRuby on production 1.6.7 if you run into any specific issues with 1.7 (it's still a preview version although pretty stable).

Jan about 12 years ago

What about puma?

Alex Takitani about 12 years ago

You don't need to add the user directly to sudoers. Just add it to the admin group.

sudo usermod -a -G admin deployer

doadmin about 12 years ago

Yes it definitively worth waiting. Note that's there is torquebox casts : http://torquebox.org/podcasts/

Jakub Głuszecki about 12 years ago

I have some problems regarding 'trinidad:setup' step.
You mentioned 'trinidad_init_services' gem, but after all it isn't used, right ?
When trying to run 'cap trinidad:setup' I got an error:

.rvm/gems/ruby-1.9.3-p194/gems/capistrano-2.12.0/lib/capistrano/configuration/variables.rb:122:inmethod_missing_with_variables': undefined method set_default' for #<Capistrano::Configuration:0x00000002002218> (NoMethodError)

Mike Goggin about 12 years ago

Looks like you're missing Ryan's set_default method. This is a custom method that Ryan created to avoid using Capistrano's built-in _cset method. It's located in base.rb.

If you've got base.rb in your recipes folder and it contains set_default, make sure you're loading it before all other recipes.

Edit: You can see what base.rb looks like in the show notes for episode 337 (Capistrano Recipes)

Jakub Głuszecki about 12 years ago

Thank You, I missed the episode 337, with base.rb in place it's working now

Nick Barth about 12 years ago

Is anyone using a JRuby server for their production sites just out of curiosity? I've seen some impressive benchmarks for JRuby servers like Puma (https://github.com/czarneckid/puma-benchmarking and http://puma.io/), but in my personal testing I usually found it to be around par with MRI Servers like Thin. I assume there's some additional configuration for JVM to achieve those results.

Nick Barth about 12 years ago

Aha, I redid my benchmarks on a small server using jruby --server --fast -S puma -t 4:4 and now the server just blazes. I'm impressed.

Tyler Smart about 12 years ago

The deploying with JRuby pdf is also good.

Jakub Głuszecki about 12 years ago

Does anyone know how to change default jvm options (heap size, stack size) that trinidad_init_services uses to generate init script ?

Kavinder Dhaliwal almost 12 years ago

I keep getting a 'trinidad_init_service: not found' error after the gem installs. Has anyone encountered this issue?

Cody Russell almost 12 years ago

It seems that the SSH agent forwarding issue in JRuby was fixed as of 1.7.0.pre2.

chomp- almost 12 years ago

Anyone tried this setup with SSL? I'm getting pretty tripped up with this config.

I added:

          ruby
        
    "ssl" => {"port" => 8443, 
      "SSLCertificateFile" => "/etc/nginx/server.crt",
      "SSLCertificateKeyFile" =>  "/etc/nginx/server.key"}

To the trinidad config block.

However trinidad continues to looks for the keystore file instead of using the certs.

Nicholas W. Watson over 11 years ago

Are you using nginx with Trinidad? If so, you would set up the SSL on nginx and ensure that external traffic is not accepted on the port that nginx is forwarding traffic to Trinidad. On ubuntu, you would do this through ufw or iptables.

Traffic between nginx and trinidad would be loopback, so you shouldn't need an SSL unless you are forwarding to a separate server.

bijan over 11 years ago

Is anyone else getting these warnings from their assets on Trinidad? Know any workarounds?

rack-1.4.5/lib/rack/utils.rb:399 warning: multiple values for a block parameter (2 for 1

They originate from jruby-rack and it's been fixed on master but it looks like trinidad depends on an earlier version.

Blaawhi over 11 years ago

Maria Hunt almost 8 years ago

Good to be here and to read this amazing article. Thanks a lot for providing this much informative stuff is perfectly excellent.