[Mongrel] Resolved problem with Apache Load Balancer Manager

Jake Dempsey angelo0000 at gmail.com
Thu Mar 29 00:59:16 EDT 2007


Had to make a couple of changes to the config from the mongrel site to get
the load balancer manager working:

changed

  # Redirect all non-static requests to cluster
  RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
  RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L]

to

  # Redirect all non-static requests to cluster
  RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_URI} !/balancer
  RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L]


I also added:
 <Location /balancer-manager>
   SetHandler balancer-manager
   Allow from localhost
 </Location>

To my virtualhost for my rails app.

Full Config:


<VirtualHost *:80>
  DocumentRoot PATH_TO_MY_APP/public

  <Directory "PATH_TO_MY_APP/public">
    Options FollowSymLinks
    AllowOverride None
    Order allow,deny
    Allow from all
  </Directory>

  RewriteEngine On

  # Uncomment for rewrite debugging
  #RewriteLog logs/myapp_rewrite_log
  #RewriteLogLevel 9

  # Check for maintenance file and redirect all requests
  #  ( this is for use with Capistrano's disable_web task )
  RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f
  RewriteCond %{SCRIPT_FILENAME} !maintenance.html
  RewriteRule ^.*$ /system/maintenance.html [L]

  # Rewrite index to check for static
  RewriteRule ^/$ /index.html [QSA]

  # Rewrite to check for Rails cached page
  RewriteRule ^([^.]+)$ $1.html [QSA]

  # Redirect all non-static requests to cluster
  RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_URI} !/balancer
  RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L]

  # Deflate
  AddOutputFilterByType DEFLATE text/html text/plain text/css
  # ... text/xml application/xml application/xhtml+xml text/javascript
  BrowserMatch ^Mozilla/4 gzip-only-text/html
  BrowserMatch ^Mozilla/4.0[678] no-gzip
  BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

  # Uncomment for deflate debugging
  #DeflateFilterNote Input input_info
  #DeflateFilterNote Output output_info
  #DeflateFilterNote Ratio ratio_info
  #LogFormat '"%r" %{output_info}n/%{input_info}n (%{ratio_info}n%%)'
deflate
  #CustomLog logs/myapp_deflate_log deflate

    ErrorLog logs/myapp_errors_log.log
    CustomLog logs/myapp_log.log combined

 <Proxy balancer://mongrel_cluster>
    BalancerMember http://127.0.0.1:3000
    BalancerMember http://127.0.0.1:3001
    BalancerMember http://127.0.0.1:3002
  </Proxy>

 <Location /balancer-manager>
   SetHandler balancer-manager
   Allow from localhost
 </Location>
 </virtualHost>

-- 
Jake Dempsey
www.watij.com
www.explainpmt.com
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