Rails server keeps crashing after a few seconds of starting it.
rails version 2.3.8
ruby version 1.8.7
I'm using windows and Apatana Studio.
There is no error in stacktrace too.
Could you please help me to identify what is causing this issue or suggest me where can I check the same? (eg. any specific logs etc.)
Stacktrace :
=> Booting Mongrel
config.load_paths is deprecated and removed in Rails 3, please use autoload_paths instead
config.load_paths= is deprecated and removed in Rails 3, please use autoload_paths= instead
=> Rails 2.3.9 application starting on
/servers/trunk/main/app/models/market.rb:32: warning: already initialized constant MARKET_CODE_US
I solved this by unstalling SQLite and reinstalling from the command line.
gem uninstall sqlite3
gem install sqlite3
Found the solution here: Rails segmentation fault when starting server?
Error says that you already initialized MARKET_CODE_US in your code. And trying to initialize again in your market model.
Find MARKET_CODE_US in your application direction and remove any unnecessary initialization.
In my case, I was not able to connect to Sybase DB from my application. There were issues with the underlying drivers and I hadn't tested connectivity to DB separately (not using my rails app) using those. But there was a .rb script in the driver folders for testing connection to Sybase from a standalone Ruby code. I used that to diagnose issues. So whenever you are setting up dev env from existing code, just test connectivity to required DB using those drivers separately before plugging them together and then testing.
Related
I am working with Ruby on Rails Tutorial (Third Edition) by Michael Hartl. I am currently in chapter 1 and have been able to download Ruby on Rails-v 4.2.0. I have made all the adjustment within the Gemfile and was successful in connecting to my sever. However, once I closed the server I have not been able to reconnect and get an error message
You cannot specify the same gem twice with different version
requirements. You Specified:sqlite3 (>_0) and sqlite3 (=1.3.9)
I tried to search on Google but did not find the answer. Any help or suggestions would be wonderful!
The error message is saying it all:
You cannot specify the same gem twice with different version requirements. You Specified:sqlite3 (>_0) and sqlite3 (=1.3.9)
You must have mistakenly specified the sqlite3 gem twice in your Gemfile. Remove one of them (possibly the older one), then run:
bundle install
and re-start your rails server.
This should fix your problem.
My specs are as follow:
Windows 8 64-bit
Ruby 1.9.3
Rails 3.2.12
I installed rails via the RailsInstaller. I have also installed the mysql2 gem. I created a new project that is pre-configured to use mysql e.g.
rails new project_name -d mysql
I then tried to start up the server/WEBrick via
rails server
And I get the following error:
I've tried this using the mysql2 as well as teh mysql gem. Both times I get the same error. When I use the default sqlite then the project starts up fine and I can view it on localhost:3000.
I'm aware that mysql2 used to be a problem on rails, but since mysql isn't working either I'm of the opinion that it's a Windows 8 specific project, surprise surprise.
I'd deff like to use MySQL rather than SQLite. Thanks for anyone that can point me in the right direction!
As a noted error case,
The SO Post says-
"The problem is with mysql. It is a 64 bit installation. Change it to 32bit and it runs fine."
Apart from that, this error may also be the result of some missing gems.
You should try running bundle install before running your server.
Also make sure that gem mysql is added to your gemfile before you do bundle install.
Please update your MySQL to 64bit version. It will fix the problem. Don't forgot to install the Devkit.
I am facing issue when I am trying to work with rails 3.0.11. I initially worked with rails 3.2.6. Build a prototype application in Rails 3.2.6, Ruby 1.9.2 and gem 1.8.7. But then found, server on which we need to host is a shared server which can only support Rails 3.0.11, Ruby 1.8.7 and gem 1.7.2.
Hence I want to keep my dev environment exactly same before I ran into further issues. As I found there was some discrepancy in routes.rb of both the versions.
Steps I followed:
Uninstalled rails
Uninstalled ruby
Installed ruby from here.
This installed ruby version 1.8.7-p370 and gem 1.8.7
After this I installed rails by specifying version as 3.0.11
But still when I run command rails -v, it throws an error to me saying 'missing gem rails 3.2.6. Run bundle install to resolve the issue'
When I ran bundle install, it again completely installed rails 3.2.6 and problem remained unresolved.
Please suggest the clean way how shall I start my development on rails 3.0.11 without running into any issues?? Am I need to delete some registry or mapping in my system through which it is detecting rails 3.2.6 and creating issues??
Its urgent as I need to complete my dev by 7th September.
As I am new to stackexchange, please guide is it appropriate to ask question on the same related thread or shall I open new discussion for my problem?
#Gun - please note in response to one of your comments posted above - you DO need to change your Gemfile - if you are running rails -v from withing your project's directory, it will read the Gemfile.
There is a script located at script/rails - this is what runs when you run the rails command from the project directory. NOTE that this rails script requires your config/application.rb file - which in turn reads the Gemfile and bundles the referenced gems. Thus is your Gemfile still references 3.2.6, and it is not installed, rails -v will not work
Glad to hear the problem is fixed :)
As for the asset pipeline - if you are using rails 3.2.6 (or were using it) then you may have been using the asset pipeline to serve your assets (javascript files, CSS files, images, etc). If you were, and you downgrade to anything pre rails version 3.1, then anything being served through the asset pipeline will no longer work.
Here is a pretty good description of the asset pipeline: http://guides.rubyonrails.org/asset_pipeline.html
You should check also remove your Gemfile.lock or manually 'bundle update rails' when you change your rails dependency.
I suggest to use rbenv or rvm to create a virtual environment/sandbox where you can install your preferred ruby versions (e.g. 1.8.7) and keep tracking of your dependencies separately. This would save you a lot of effort.
Keep in mind that rails 3.0 has no asset pipeline support (it has been included in rails 3.1)! This is a very important difference and if you depend on it you will have big issues to solve for the downgrade.
Thanks a lot everyone for help.
I believe it was weird issue. I had heroku on the system. I was initially deploying my app on the same and then changed to another hosting server.
After uninstalling the heroku, it works perfectly fine. Probably, that was interfering somewhere. Although, not sure but problem is resolved.
Thanks a lot again for a great great help!!!
Meanwhile, I would request alup to throw some more light on asset pipeline support. Wots that? Could you please explain more??
Need to delete C:\Users\.ror folder and C:\Users\.gemfile and C:\Users\.gemfile.lock from your desktop..
My client wants me to download a working ruby on rails project to my local system. But when I connected to a server, I got nine identical project folders (which seem like different versions). Is there a way to know which project is running using process id (I have only the process id)?
If you have the process ID, then check /proc/[pid]/cwd symbolic link. This is the process' current directory.
I assume that you are on a Linux-like system.
If you are not, then you may issue a HTTP request (to wake up the rails app) and then look which logfile has been modified recently.
if you are able to run rails console on your server then type this: Rails.root in your console or irb it will tell that project you are on belongs to which directory!
no we cant know using process id. but when you start server you will find rails version like
:> ruby script/server
=> Booting Mongrel
=> Rails 2.3.10 application starting on http://0.0.0.0:3000
above line using rails 2.3.10 version and if you want to know ruby version simply call
ruby -v in your command prompt
Ok, I'm a noob with rails... so I just set up rails with RVM and created a new project, and when I try to visit a newly created view I'm getting an error 500.
Heres my setup:
OSX 10.6.5
Installed MySQL 64bit
RVM installed ruby 1.8.7 and rails 2.3.8 (no other rails or ruby except for the system ruby) rvm install 1.8.7, rvm use --create 1.8.7#rails2, gem install rails -v=2.3.8
Passenger with Apache gem install passenger, rvmsudo passenger-install-apache2-module
Passenger preference pane
Turned on websharing
I then proceeded to setup a rails project in my development folder called testapp, added it in the passenger preference pane, and then ran script/generate controller Say, defined an action hello, and then created a view in the app/view/say folder called hello.
Now I'm getting a 500 error when visiting myapp.local/say/hello, what am i doing wrong?
UPDATE:
I checked the logs and also tried running using WEBrick instead of passenger and apache. I got thrown back the same errors. I don't think I should post the entire log, should I? But the first error is
no such file to load -- sqlite3
I have not yet setup a db, I was going to use mysql, but I didn't want to install it since I'm not using models yet. Is it a requirement?
UPDATE 2:
So I installed the mysql gem with gem install mysql -- --include=/usr/local/lib (not sure if this is right). I then created a rails app with rails -d mysql myapp. And set the password in the database.yml. I'm getting a new error now:
Unknown database 'myapp_development'
So I have to create a database. Why am I being forced to create a db at all?
Yeah, you need to install sqlite even if you're not using models yet - Rails checks to make sure whatever is specified in database.yml is actually there to use.
Don't access it through passenger, launch it using ruby script/server and check out the error it throws there. Generally those errors are way more descriptive than Passenger because Passenger is probably running your application using the production environment.
Hey Ryan, do you need to Ruby 1.8.7? Why don't you install the latest 1.9.2 and Rails 3? I have the same environment and so far no problems. Here is a link for installing everything you need. Let me know if it helped! http://amerine.net/2010/02/24/rvm-rails3-ruby-1-9-2-setup.html
Salud!