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Nesting and authenticating resque-web on ey-cloud
Wouldn't it then be nice to include the resque-web interface underneath your current application's url.
Wouldn't it be nice to use the same authentication mechanism that your web application uses?
Here's a solution that we used on a recent Rails 2.3 ey-cloud project that accomplished both goals.
First, we created a simple resque_web.ru file within our Rails 2.3 project. In this example we used the same Warden SSO authentication mechanism and fired up the resque-web server from the new mapping.
<pre>
# Set up Resque environment
resque_config = YAML.load_file(File.join(File.dirname(__FILE__), 'config', 'resque.yml'))
env = ENV['RACK_ENV'] || ENV['RAILS_ENV'] || 'development'
Resque.redis = resque_config[env]
map '/resque-web' do
use Rack::Session::Cookie, :key => 'rack.session',
:path => '/',
:expire_after => 60 ** 2,
:secret => 'supersecretresquekey'
use CasrackTheAuthenticator::Simple, :cas_server => "http://sso.your_sso_server.com"
use CasrackTheAuthenticator::RequireCAS
use Rack::ShowExceptions
run Resque::Server.new
end
</pre>
The important piece here is that we use '/resque-web', we'll use this same path in a bit within our Nginx configuration. We also used the rack session cookies with our SSO authenticator.
Another interesting piece here is that we're using Castronaut and Casrack the Authenticator, which makes SSO pretty straight forward.
Next we created an upstream server in Nginx to resolve the path.
Here's our Chef template for the upstream server.
<pre>
upstream resque_web_upstream {
server unix:/var/run/engineyard/<%= @app_name %>/<%= @app_name %>.thin.1.sock;
}
</pre>
The important piece here is that the upstream server lives outside of our web application config area.
Here's our Chef recipe for creating the upstream server file.
<pre>
template "/etc/nginx/servers/resque_web.conf" do
owner "root"
group "root"
mode 0755
source "resque_web.conf.erb"
variables({
:app_name => app_name
})
end
</pre>
And then finally, we created a new custom location within our Nginx server configuration.
Here's our Chef template for the custom Nginx Location.
<pre>
location /resque-web {
proxy_set_header Host $http_host;
include /etc/nginx/common/proxy.conf;
proxy_pass http://resque_web_upstream;
}
</pre>
And here's our Chef recipe for creating the custom location file.
<pre>
template "/etc/nginx/servers/#{app_name}/custom.locations.conf" do
owner "root"
group "root"
mode 0755
source "custom.locations.conf.erb"
variables({
:app_name => app_name
})
end
</pre>
That's it!
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