Lehekülje Rails, Mongrel, Apache cluster lähteteksti vaatamine

===Rails ja Apache mitme projektiga server===

Süsteem toimib nii, et Apache suunab vhostide info mongrel serverile, mis siis railsi skripte esile manab.

Apache tuleb kompileerida koos proxy moodulitega ja kasutamiseks sobib vaid apache22 mis sisaldab meile vajalikku proxy balancerit

FreeBSD's tuleb apache installida selliselt.

 cd /usr/ports/www/apache22
 make install with_proxy_modules=yes

Muudes osides tuleb uurida enda tarkvara installerite manuale.

 gem install mongrel
 gem install mongrel_cluster

Lihtsaim viis mongrelit kasutada on ta startida nagu webrick.

 cd progeadmin
 $ mongrel_rails start -d

ja seiskamiseks

 $ mongrel_rails stop

Antud juhul on meil keerukam probleem nimelt
on kaks eraldi railsis loodud programmi, mis asuvad 

 /home/rails/progeadmin/
 /home/rails/veebiadmin/

Ning vaja oleks ,et progeadmin avaneb aadressiga www.katse.ee ja veebiadmin www.nimi.ee
ja samas saaks serveris kasutada ka mitmesugust saatilist materjali ja teisi lehti.

Mongrel Cluster seadistus neile kahele tarkvarale


 # cd /home/rails/progeadmin
 # mongrel_rails cluster::configure -e production -p 8000 -N 3 -a 127.0.0.1
 Writing configuration file to config/mongrel_cluster.yml.

 # cd veebiadmin
 # mongrel_rails cluster::configure -e production -p 8100 -N 3 -a 127.0.0.1
 Writing configuration file to config/mongrel_cluster.yml.


Need käsud kirjutavad konfiguratsiooni faili kummagile config/mongrel_cluster.yml.

n2iteks /home/progeadmin/rails/config/mongrel_cluster.yml sisu n2eb v2lja selline

 log_file: log/mongrel.log
 port: "8000"
 environment: production
 address: 127.0.0.1
 pid_file: tmp/pids/mongrel.pid
 servers: 3

Mongrel clustrite startimiseks tuleb

 # cd progeadmin
 # mongrel_rails cluster::start
 starting port 8000
 starting port 8001
 starting port 8002

 # cd  veebiadmin
 # mongrel_rails cluster::start
 starting port 8100
 starting port 8101
 starting port 8102

Nende käskude peale käivituvad kummagi railsi kohta kolm mongrel protsessi
Esimesel portidele 8001 8002 8003 ja teisel 8101 8102 8103


httpd.conf

Kontrollime, et oleks laaditud moodulid

 proxy_module
 proxy_connect_module
 proxy_http_module
 proxy_balancer_module


Nüüd loome mõlemale progele nende vhostid

 NameVirtualhost 193.40.0.62:80 
 
 <VirtualHost 193.40.0.62:80>
   ServerName www.katse.ee
 
   RewriteEngine On
 
  # Redirect all non-static requests to cluster
  RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L]
 
 </VirtualHost>
 
 <VirtualHost 193.40.0.62:80>
   ServerName www.nimi.ee 
   RewriteEngine On
 
  # Redirect all non-static requests to cluster
  RewriteRule ^/(.*)$ balancer://mongrel_cluster2%{REQUEST_URI} [P,QSA,L] 
 
 </VirtualHost>

 <Proxy balancer://mongrel_cluster>
    BalancerMember http://127.0.0.1:8001
    BalancerMember http://127.0.0.1:8002
    BalancerMember http://127.0.0.1:8003
 </Proxy>
 
 <Proxy balancer://mongrel_cluster2>
    BalancerMember http://127.0.0.1:8101
    BalancerMember http://127.0.0.1:8102
    BalancerMember http://127.0.0.1:8103
 </Proxy>
 
 Listen 8000
 <VirtualHost 193.40.0.10:8000>
  <Location />
    SetHandler balancer-manager
    Deny from all
    Allow from localhost
  </Location>
 </VirtualHost>



Edasine seadistus

Juhul kui muutub railsi versioon tuleks uuenda ka koodi

 rake rails:update 

Juhtum kui on railsi kood vaja domeenis tuua esile kujul http://www.nimi.ee/admin
samas kui www.nimi.ee all on teine kood v2i veeb

  # Rewrite to trailing slash
  RewriteRule ^/admin$ /admin/ [R,L]
 
  # test if this is /admin request
  RewriteCond %{REQUEST_URI} ^/admin(/.*)
  # strip off /admin and put result in ENV
  RewriteRule ^/admin(.*) /admin$1 [E=AdminReq:$1]
 
  RewriteCond /home/rails/admin/public/%{ENV:AdminReq} -f
  # serve static files
  RewriteRule ^/admin/(.*) /home/rails/admin/public/$1 [L]
  # If request is not static, proxy to rails
  RewriteRule ^/(admin/.*)$ balancer://mongrel_cluster2/$1 [P,QSA,L]

===Lingid===

http://www.rubyonrails.org/

http://blog.innerewut.de/articles/2006/04/21/scaling-rails-with-apache-2-2-mod_proxy_balancer-and-mongrel

http://www.webmasterwords.com/ruby-rails-mongrel-apache-easy

Veel suurem hulk näiteid

http://www.digitalmediaminute.com/article/1816/top-ruby-on-rails-tutorials