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Questions[mongrel](server)

Martin Hope
Alex Coplan
Asked: 2011-12-31 04:23:09 +0800 CST
  • 2

I just set up a virtual machine running Ubuntu Server, with a LAMP stack and OpenSSH installed.

What now would be the best way to enable that server to run both rails and PHP applications? Would it be best to virtualise the two servers on the host server machine? - Or can they run happily alongside each other?

Would Mongrel would be the best option for the rails server?

linux php ruby-on-rails lamp mongrel
Martin Hope
Adam
Asked: 2011-11-01 04:37:32 +0800 CST
  • 2

I'm new to apache2 and passenger to set-up rails apps and followed a tutorial on how to get redmine (rails app) set up (http://xdissent.com/2010/05/04/github-clone-with-redmine/).

It all works great but to access the app you need to go to the /redmine directory. I have set it up as redmine.local/redmine. It would be great if I could be just redmine.local.

I had a look through the files I set up as part of the apache/mongrel/passenger piece and took out references to the directory but alas its never that easy.

I would appreciate any assistance, or links to more information for beginners that I can learn from.

Thanks for your help! Adam

--- Updated ---

Some additional details, I have the following files which i made edits too as part of the set-up of the server:

/etc/apache2/conf.d/redmine

 Include /opt/redmine/apps/redmine/conf/redmine.conf

/opt/redmine/apps/redmine/conf/redmine.conf

 ProxyPass /redmine balancer://redminecluster
 ProxyPassReverse /redmine balancer://redminecluster

 <Proxy balancer://redminecluster>
   BalancerMember http://127.0.0.1:3001/redmine
   BalancerMember http://127.0.0.1:3002/redmine
   Order deny,allow
   Allow from all
 </Proxy>

/opt/redmine/apps/redmine/config/mongrel_cluster.yml

 --- 
 prefix: /redmine
 log_file: log/mongrel.log
 port: "3001"
 environment: production
 pid_file: tmp/pids/mongrel.pid
 servers: 2

/etc/apache2/sites-available/default

 <VirtualHost *:80>
    ServerAdmin webmaster@localhost

 <Directory /var/www/>
    Options FollowSymLinks
    AllowOverride None
 </Directory>
 <Directory /var/www/>
    Options Indexes FollowSymLinks MultiViews
    AllowOverride None
    Order allow,deny
    allow from all
 </Directory>

ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
 <Directory /var/www/usr/lib/cgi-bin>
    AllowOverride None
    Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
    Order allow,deny
    Allow from all
 </Directory>

ErrorLog /var/log/apache2/error.log

# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn

CustomLog /var/log/apache2/access.log combined

Alias /doc/ "/usr/share/doc/"
 <Directory /var/www/usr/share/doc/>
    Options Indexes MultiViews FollowSymLinks
    AllowOverride None
    Order deny,allow
    Deny from all
    Allow from 127.0.0.0/255.0.0.0 ::1/128
 </Directory>
 DocumentRoot /var/www

 </VirtualHost>

I can't find a file that references the current directory /redmine as a route so not sure the server finds it in the first place - unless its that conf.d thing.

apache-2.2 mongrel phusion-passenger
Martin Hope
Nivi
Asked: 2011-04-19 14:16:17 +0800 CST
  • 1

I installed mongrel cluster and nginx module for it on to my virtual machine. The working environment is 

ruby 1.9.2
rails 3.0.6
rubygems 1.7.2
mongrel_cluster 1.0.5
mongrel 1.2

When I start the mongrel cluster, it throws me the following error. The application is off line Please suggest me some solution. I have tried lot many googled solutions and none of them fixed the issue. Any kind of help is appreciated.

*starting port 8011
NOTE: Gem::SourceIndex.from_installed_gems is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_installed_gems called from /usr/local/lib/ruby/gems/1.9.1/gems/gem_plugin-0.2.3/lib/gem_plugin.rb:109
.
NOTE: from_installed_gems(arg) is deprecated. From /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/deprecate.rb:62:in `block (2 levels) in deprecate'
NOTE: Gem::SourceIndex.from_gems_in is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_gems_in called from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:50
.
** !!! PID file tmp/pids/mongrel.8011.pid already exists.  Mongrel could be running already.  Check your log/mongrel.8011.log for errors.
** !!! Exiting with error.  You must stop mongrel and clear the .pid before I'll attempt a start.*

EDIT:

Thank you @dioms and @Hmallett. I updated the gems and deleted the already existing pid files from tmp/pids and restarted d cluster. It gave me d error 

NOTE: Gem::SourceIndex.from_installed_gems is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_installed_gems called from /usr/local/lib/ruby/gems/1.9.1/gems/gem_plugin-0.2.3/lib/gem_plugin.rb:109
.
NOTE: from_installed_gems(arg) is deprecated. From /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/deprecate.rb:62:in `block (2 levels) in deprecate'
NOTE: Gem::SourceIndex.from_gems_in is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_gems_in called from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems/source_index.rb:50
.
starting port 8009
NOTE: Gem::SourceIndex.from_installed_gems is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::SourceIndex.from_installed_gems called from /usr/local/lib/ruby/gems/1.9.1/gems/gem_plugin-0.2.3/lib/gem_plugin.rb:109

Please suggest me some solution to it. I am a newbie to the server installations and I am not sure what exactly to include in the configuration script.

ubuntu ruby-on-rails nginx mongrel
Martin Hope
Amala
Asked: 2011-01-12 16:58:13 +0800 CST
  • 5

We are trying to deploy mongrel instances on a machine. What is the optimal number of mongrel instances for a server? Since an instance can handle concurrent connections, I do not see any benefit in starting more than 1 per core. Any more than that and the threads will just fight for CPU. Our predecessors have assigned 10 instances for 4 cores, but I think it will just cause CPU contention. Any definitive answers / opinions?

I have seen this question: How many mongrel instances?

But it is really not specific enough.

ruby-on-rails mongrel thin mongrel-cluster
Martin Hope
Pete
Asked: 2009-07-29 19:46:45 +0800 CST
  • 2

I have followed this CentOS 5.2 Mongrel Cluster tutorial for starting mongrel_cluster at reboot on CentOS 5.2. However, I have to manually start mongrel_cluster at reboot.

Since that didn't work, I followed the advice in Set up Mongrel as a service and start it automatically on Centos 5.2. The key bits are:

chkconfig -add mongrel_cluster
chkconfig –level 345 mongrel_cluster on

Again... This sidn't work: I still have to manually start mongrel_cluster at boot. Finally, I tried adding "@reboot ..." to my crontab as so:

RAILS_ROOT=/path/to/root
# Restart Ferret Drb server on host reboot:
@reboot ${RAILS_ROOT}/script/ferret_server --root=${RAILS_ROOT} -e production start

# Restart rails apps (via Mongrel) on host reboot:
@reboot /etc/init.d/mongrel_cluster start

but again... I have to manually restart both Mongrel and Ferret!

Finally, I have followed the How to launch DRb server on reboot (linux) instructions, but I have to manually launch the Ferret DRb at reboot...

This is my first sysadmin gig, so I'm not even sure which logfile(s) to be looking at... If you need more information to help, please help me out & let me know where to look!

mongrel