This is a pretty basic question, I tried searching but the question is a little obscure for Google searches.
When I start my rails server I want it to additionally start a script I wrote that just gives a feed of different system resources (i.e. CPU usage, incoming & outgoing connections, as well as alerts if resources get to high, etc.) Preferably it starts in a separate terminal windows.
Additional information if it helps any:
OS: Kali Linux
Ruby: 2.0.0
Rails: 4.0.3
WEBrick: 1.3.1
What you are wanting is Rails Initializers (guides.rubyonrails.org/configuring)
After rails starts up it then runs all the code in 'config/initializers'.
Under 'config/initializers' create a new file eg 'system_resources.rb'.
Initialize your code in there.
Related
I recently setup a local server on my mac. I have rails and ruby and rack installed and running.
But I'm unsure of how to direct incoming request or have a rails app take control.
How do I move past just having the index page show and have pages like http://10.0.0.2/example/test.html or whatever load???
Any resources is much appreciated, or even a couple keywords to start googling
Easiest is to install passenger and use passenger preference pane to configure it.
http://www.fngtps.com/passenger-preference-pane
Some background:
I am new to Ruby and Rails and I've been assigned to get an already completed Ruby on Rails project to compile from source.
The project has, as far as I've been able to discover, little to no documentation on how to set it up. The developers are unavailable for me to contact.
After doing some tutorials and learning the basics I have been trying to get the code to compile and run. My platform/setup is currently:
Windows 7
Ruby 1.9.3
Rails 3.2.13
Although I am attempting to develop with a VirtualBox Ubuntu setup alongside of this because I suspect it will be easier in the long run.
Despite there being no Gemfile for this project I have managed to (I believe) pin down and install all of the necessary gem packages (hopefully compatible versions). I am now running into this issue:
in alias_method': undefined methodpath' for class `ActionController::UploadedStringIO' (NameError)
As far as my searches have led me to believe this is a bug that can occur when the versions of Ruby and Rails are not correct/incompatible?
Is there a way to "reverse engineer" what version of Ruby and Rails was used to develop this project in the first place from the code alone? Could this bug be caused by me using 3.2.13 Rails if the original developers were using 1.8.7 Ruby? It seems to me that if I can emulate their setup closely enough then the source should compile and I can get down to business.
Additionally I am using the default WEBrick server. Is there a way to determine what the original team used for the web service? Does it even matter if they used a Apache setup or are these server implementations mostly interchangeable aside from efficiency?
Thank you for your time. If you have any further advice on how to handle this sort of project I'd love to hear that too.
If there is no Gemfile, it points to the Rails app being 2.3 or earlier. As for the Web server, they are interchangeable, but there is really very little chance that they were using Webrick, due to its ability (or lack thereof) to handle many concurrent requests. Chances are, they were using mongrel, or passenger via Apache or Nginx.
Ok, long time php guy doing my best to pick up ruby on rails by developing a small website for myself using only ror instead of php.
However i'm a bit stuck, and i think it is because i'm not exactly understanding how rails actually works.
I am running centos 5.5 / apache2. I have successfully installed ruby, rubygems, and subsequently rails and passenger. All these are 'working', i can run ruby commands, gem commands etc.
But how do I start using rails on my website? If I create an .erb or .rb file with some simple ruby commands, it just displays as plain text when I navigate to it.
Do I need to configure apache to 'execute' .rb or .erb files (similar to the way .php files execute?).
Any help would be GREATLY appreciated!!
You might check out the Rails Getting Started Guide: http://guides.rubyonrails.org/getting_started.html
I suggest you read a huge tutorial on this topic: http://guides.rubyonrails.org/getting_started.html.
Ruby is the language, and Ruby on Rails is a framework. From the guide:
Rails is a web application development
framework written in the Ruby
language. It is designed to make
programming web applications easier by
making assumptions about what every
developer needs to get started. It
allows you to write less code while
accomplishing more than many other
languages and frameworks. Experienced
Rails developers also report that it
makes web application development more
fun.
I'd read Chapter 4, if you already know all this, as it talks about the actual webserver.
Rails comes with it's own webserver, so Apache isn't needed.
Sounds like you need to really get a handle on Rails and what it is first. This site has some great information for beginners, and should help you understand what you are working with and your next steps to get an application running:
http://guides.rubyonrails.org/getting_started.html
I've also heard some good things about the information here:
http://railsforzombies.org/
Check out Ruby on Rails Tutorial for getting started in Rails.
As #Blender mentioned, rails comes with an in build web server called webrick. (Think of it same as apache .. for now)
so all you have to do is go to the rails project directory, and run the command
if you are using rails < 3.x
ruby script/server
if you are using rails > 3.x
rails server
once u done this your rails project will start in webrick server and by default in port 3000
http://localhost:3000
you may consider apache/ some other rails server setup for production deployment, but to get started you dont need apache at all
and welcome to ruby world ! :D
HTH
sameera
I'm interested to play around with RoR a bit. Apart from literature i should read, i'm particularly interested about how to setup development environment.
Here's a good example how to setup environment for Java from Noda Time project wiki pages.
I want something similar but for RoR.
As far as i know - unix operation systems fits way much better (have toyed on windows 1 1/2 year ago - pure nightmare). So it would be nice to get some recommendations about linux distros and how to make it run next to win7/xp.
Basically - i want to shorten endless searching and improvisation until i can play with some code.
P.s. bonus for simple sample project. :)
The single quickest way to get up and running might be to simply grab Netbeans and develop against its built-in JRuby instance. It will walk you through setting up a Rails project and even give you some nice-to-haves like autocompletion.
Baring that, the easiest method is likely to download a Linux VM Appliance pre-Customized for Rails Development and a copy of VMWare Player.
The best 2 ways to go are OS X and Linux, I use Ubuntu just because it's the nicest package that I've found (there will no doubt be a variety of opinons on this.)
For Rails, I like to not use the packages or pre-installed versions, and instead build my own so I can test against various versions of ruby if need be. Hivelogic has a nice post about how to do it for OS X 10.6.
From there, you can just run:
rails myproject
cd myproject
./script/generate scaffold post title:string body:text
rake db:migrate
rm public/index.html
./script/server --debugging
And then connect to http://localhost:3000/posts to get to your application.
Once you get more comfortable, check out running Passenger instead, so you can have multiple applications running at the same time. On OSX there's even a nice Prefpane to easily set up new sites. This also ins't too hard in Ubuntu with the examples provided in the passenger docs.
For editing the application I think the IDEs (Aptana, Netbeans, etc.) are still too heavyweight, especially for small starter projects. I like Textmate (like everyone else) for OSX and gedit with gedit-mate.
Once you're writing applications, you'll find that railsapi has the best interface for browsing all of the various methods not only in Rails, but ruby, authlogic, and a bunch of other common gems.
Lastly, you'll want to look into source control, with git being preferred in the Rails community at the moment.
Good luck!
Get VMWare player
Get ubuntu vm
If it's server version - install desktop x or whatever it's called
Mess around with sudos, visudos
Mess around with vi editor to save newly created account to sudoers list
Mess around with vertical mouse scrolling which apparently does not
work on vmware+ubuntu
Finally install netbeans
Through plugins, install ruby on rails
Some global updating
Enjoy toying
tadaaaa...
Something like that i wanted - with each point explained a bit (no doubt that my steps aren't best ones and sounds funny for those who knows).
I guess that i forgot to mention that i lack knowledge of unix systems in general too.
Anyway - got what i was looking for. :)
I've received some really great guidance from users of this site, and I'm thinking some advanced Rails people could assist me in resolving the following problem.
I'm attempting to deploy a simple Rails application on a win32 server.
I've been carefully working through these instructions (see http://functionalelegant.blogspot.com/2008/05/deploying-rails-on-windows.html) for win32 Rails application deployment.
I started from a more-or-less clean windows install, then downloaded and installed
Ruby
LightTPD
Rails
Zed's SCGI Rails Runner
Windows Server 2003 Resource Kit Tools
Ruby/DBI ADO package
After that, I've done the following:
I've commented out the line in the SCGI gem (which actually was causing trouble.)
I created the directory structure as suggested, with folders for logs.
I modified the scgi.yaml file and the Lighty config files to reflect my environmental settings.
After this, I wrote the batch scripts to start up Lighty and the SGCI process. They appear to run correctly. However, inside app-errors.log the following lines appear:
2009-05-15 16:48:06: (mod_scgi.c.2645) fcgi: got a FDEVENT_ERR. Don't know why.
2009-05-15 16:48:06: (mod_scgi.c.2469) emergency exit: scgi: connection-fd: 7 fcgi-fd: 8
Finally, when I navigate to http://localhost:xxxx/ I just see a blank page. Update: I just realized the blank page only appeared to be. Viewing the source revealed the following issue:
2C:/Ruby/lib/ruby/1.8/drb/drb.rb:573:in `load'":C:/Ruby/lib/ruby/1.8/drb/drb.rb:612:in `recv_request'":C:/Ruby/lib/ruby/1.8/drb/drb.rb:911:in `recv_request'"?C:/Ruby/lib/ruby/1.8/drb/drb.rb:1530:in `init_with_client'"<C:/Ruby/lib/ruby/1.8/drb/drb.rb:1542:in `setup_message'"6C:/Ruby/lib/ruby/1.8/drb/drb.rb:1494:in `perform'"8C:/Ruby/lib/ruby/1.8/drb/drb.rb:1589:in `main_loop'"3C:/Ruby/lib/ruby/1.8/drb/drb.rb:1585:in `loop'"8C:/Ruby/lib/ruby/1.8/drb/drb.rb:1585:in `main_loop'"4C:/Ruby/lib/ruby/1.8/drb/drb.rb:1581:in `start'"8C:/Ruby/lib/ruby/1.8/drb/drb.rb:1581:in `main_loop'"2C:/Ruby/lib/ruby/1.8/drb/drb.rb:1430:in `run'"4C:/Ruby/lib/ruby/1.8/drb/drb.rb:1427:in `start'"2C:/Ruby/lib/ruby/1.8/drb/drb.rb:1427:in `run'"9C:/Ruby/lib/ruby/1.8/drb/drb.rb:1347:in `initialize'"2C:/Ruby/lib/ruby/1.8/drb/drb.rb:1627:in `new'"<C:/Ruby/lib/ruby/1.8/drb/drb.rb:1627:in `start_service'"MC:/Ruby/lib/ruby/gems/1.8/gems/scgi_rails-0.4.3/lib/scgi.rb:402:in `run'"HC:/Ruby/lib/ruby/gems/1.8/gems/scgi_rails-0.4.3/bin/scgi_service:61"*C:/Ruby/bin/scgi_service:19:in `load'" C:/Ruby/bin/scgi_service:19: mesg" too large packet
Note that 'ruby script/server' runs just fine, but the page then can't be seen externally.
Any ideas? Please let me know if anything jumps out at you.
I wrote the chapter for this in 'Deploying Rails Applications'. http://www.pragprog.com/titles/fr_deploy/deploying-rails-applications
Basically, you want mongrel, mongrel_service, and apache 2.2 with mod_proxy_balancer for windows.
You install 2 or more instances of your app with Mongrel running on separate ports. You set the services to autostart.
Then you set up apache to balance to them.
This is all outlined in the book, and I have some older articles on my website too - if you search for "deloying rails on windows" you'll find some pretty out of date stuff. The apache+mongrel way is the best way for Windows right now, and if you need additional help, feel free to let me know. I'd be glad to help.