Changes between Version 8 and Version 9 of ServerAdministration

Timestamp:

Jun 6, 2011, 5:11:00 PM (11 years ago)

Author:

work@…

Comment:

--

ServerAdministration

@@ -74 +74 @@
 
 == Apache ==
-Currently, the Apache webserver is set
+Currently, the Apache webserver is set up to proxy requests to the tomcat daemon in charge of a specific environment. The configuration is also already set up to perform loadbalancing. Note that in the configuration below the application context is ''gscf-0.8.3-www'', this should be changed to match the application context on the tomcat server: 
+
+{{{
+root@nmcdsp:/etc/apache2/sites-available# cat nmcdsp.org_gscf-www.conf 
+# Apache Virtual Host for GSCF Production Build
+#
+# Author        Jeroen Wesbeek <J****n.W******@gmail.com>
+# Since         20100825
+#
+# Revision Information:
+# $Author$
+# $Date$
+# $Rev$
+#
+<VirtualHost *:80>
+        ServerName studies.nmcdsp.org
+        ServerAlias www.studies.nmcdsp.org gscf.nmcdsp.org www.gscf.nmcdsp.org
+
+        ErrorLog /var/log/apache2/gscf-www-error.log
+        CustomLog /var/log/apache2/gscf-www-access.log combined
+
+        # Make sure that my document root points to the root of the web
+        # application (where the WEB-INF is located, for instance).
+        #DocumentRoot /var/www/nmcdsp.org_www/htdocs
+
+        #ErrorDocument 404 /503.php
+
+        <IfModule mod_rewrite.c>
+                RewriteEngine on
+
+                # keep listening for the serveralias, but redirect to
+                # servername instead to make sure only one user session
+                # is created (tomcat will create one user session per
+                # domain which may lead to two (or more) usersessions
+                # depending on the number of serveraliases)
+                # see gscf ticket #321
+                RewriteCond %{HTTP_HOST} ^gscf.nmcdsp.org$ [NC]
+                RewriteRule ^(.*)$ http://studies.nmcdsp.org$1 [R=301,L]
+                RewriteCond %{HTTP_HOST} ^www.gscf.nmcdsp.org$ [NC]
+                RewriteRule ^(.*)$ http://studies.nmcdsp.org$1 [R=301,L]
+                RewriteCond %{HTTP_HOST} ^www.studies.nmcdsp.org$ [NC]
+                RewriteRule ^(.*)$ http://studies.nmcdsp.org$1 [R=301,L]
+
+                # rewrite the /gscf-a.b.c-environment/ part of the url
+                RewriteCond %{HTTP_HOST} ^studies.nmcdsp.org$ [NC]
+                RewriteRule ^/gscf-0.8.3-www/(.*)$ /$1 [L,PT,NC,NE]
+        </IfModule>
+
+        <IfModule mod_proxy.c>
+                <Proxy *>
+                        Order deny,allow
+                        Allow from all
+                </Proxy>
+
+                ProxyStatus On
+                ProxyPass / balancer://gscf-cluster/gscf-0.8.3-www/ stickysession=JSESSIONID|jsessionid nofailover=On
+                ProxyPassReverse / balancer://gscf-cluster/gscf-0.8.3-www/
+                ProxyPassReverseCookiePath /gscf-0.8.3-www /
+
+                # backend servlet container for virtual host support.
+                ProxyPreserveHost On
+
+                # Tell mod_mod proxy that it should not send back the body-content of
+                # error pages, but be fascist and use its local error pages if the
+                # remote HTTP stack is sending an HTTP 4xx or 5xx status code.
+                #ProxyErrorOverride On
+
+                <Location />
+                        SetOutputFilter proxy-html
+                        ProxyHTMLDoctype XHTML Legacy
+                        ProxyHTMLURLMap /gscf-0.8.3-www/ /
+                </Location>
+
+                <Proxy balancer://gscf-cluster>
+                        #BalancerMember ajp://localhost:10009
+                        BalancerMember http://localhost:10080
+                </Proxy>
+        </IfModule>
+</VirtualHost>
+root@nmcdsp:/etc/apache2/sites-available# 
+}}}
+
+Adding more nodes to include in the loadbalanced setup can be done by extending the ''proxy balancer'' configuration directive:
+
+{{{
+                <Proxy balancer://gscf-cluster>
+                        BalancerMember http://node1:port
+                        BalancerMember http://node2:port
+                        ...
+                        BalancerMember http://nodeN:port
+                </Proxy>
+}}}
 
 == Backups ==