Template:OXLoadBalancingClustering SessionLoadbalancing - Revision history

Mheiland: /* Session load balancing */

2011-06-16T14:15:02Z

Session load balancing

← Older revision		Revision as of 14:15, 16 June 2011
Line 11:		Line 11:

	$ vim /etc/apache2/conf.d/proxy_ajp.conf		$ vim /etc/apache2/conf.d/proxy_ajp.conf

	<Location /servlet/axis2/services>		<Location /servlet/axis2/services>
	# restrict access to the soap provisioning API		# restrict access to the soap provisioning API

Mheiland: /* Session load balancing */

2011-06-16T14:14:51Z

Session load balancing

@@ Line 12: / Line 12: @@
   $ vim /etc/apache2/conf.d/proxy_ajp.conf
-  <IfModule mod_proxy_ajp.c>
+  <Location /servlet/axis2/services>
     <Proxy balancer://oxcluster>
-     BalancerMember ajp://10.20.30.213:8009 smax=0 ttl=60 retry=5 loadfactor=50 route=OX-1
+       Order deny,allow
-     BalancerMember ajp://10.20.30.215:8009 smax=0 ttl=60 retry=5 loadfactor=50 route=OX-2
+       Allow from all
     </Proxy>
   </IfModule>

Smstmart at 15:29, 10 February 2011

2011-02-10T15:29:59Z

← Older revision		Revision as of 15:29, 10 February 2011
Line 30:		Line 30:
	ProxyPass /publications balancer://oxcluster/publications stickysession=JSESSIONID		ProxyPass /publications balancer://oxcluster/publications stickysession=JSESSIONID
	ProxyPass /Microsoft-Server-ActiveSync balancer://oxcluster/Microsoft-Server-ActiveSync stickysession=JSESSIONID		ProxyPass /Microsoft-Server-ActiveSync balancer://oxcluster/Microsoft-Server-ActiveSync stickysession=JSESSIONID
	ProxyPass /usm-json ~~ajp~~://~~127.0.0.1:8009~~/usm-json ~~smax=0 ttl=60 retry~~=5		ProxyPass /usm-json balancer://oxcluster/usm-json stickysession=JSESSIONID
	</IfModule>		</IfModule>

Smstmart at 15:28, 10 February 2011

2011-02-10T15:28:30Z

← Older revision		Revision as of 15:28, 10 February 2011
Line 30:		Line 30:
	ProxyPass /publications balancer://oxcluster/publications stickysession=JSESSIONID		ProxyPass /publications balancer://oxcluster/publications stickysession=JSESSIONID
	ProxyPass /Microsoft-Server-ActiveSync balancer://oxcluster/Microsoft-Server-ActiveSync stickysession=JSESSIONID		ProxyPass /Microsoft-Server-ActiveSync balancer://oxcluster/Microsoft-Server-ActiveSync stickysession=JSESSIONID
			ProxyPass /usm-json ajp://127.0.0.1:8009/usm-json smax=0 ttl=60 retry=5
	</IfModule>		</IfModule>

Bartl3by: Created page with "== Session load balancing == Since configuration of system services for the corresponding operating system is already described in the general [[Main_Page#Installation_based_on_p..."

2011-01-25T13:15:05Z

Created page with "== Session load balancing == Since configuration of system services for the corresponding operating system is already described in the general [[Main_Page#Installation_based_on_p..."

New page

== Session load balancing ==
Since configuration of system services for the corresponding operating system is already described in the general [[Main_Page#Installation_based_on_packages|installation guides]], this guide will focus on the specialties when creating a distributed setup. Please refer to the [[Main_Page#Installation_based_on_packages|installation guides]] for configuration that is not mentioned in this guide.

The web server on this setup is a pure frontend server. This means it takes and responds to requests sent by a client but it does not contain any groupware logic. All requests are forwarded to the Open-Xchange Servers through the ''AJP13'' protocol. The configuration will allow round-robin session load balancing, basically both Open-Xchange servers are configured as backends for answering requests with an 50:50 probability of being chosen. Once a new session is created, that session is bound to the groupware server it has been created.

For the web server we only need a very small set of packages, basically only packages that starts with ''open-xchange-gui'' where most of additional packages are languagepacks or plugins. Add the Open-Xchange software repository to the package manager configuration first. Then install the ''open-xchange-gui'' package to the web server.

$ apt-get install{{OXPackageInstallation-GUI}}

This will install the Open-Xchange user interface, Apache 2 and several services as dependency. The Apache module ''proxy_ajp'' will handle all the communication with the Open-Xchange Servers. Its configuration also contains the setup of the session balancing. What it basically does is defining two backend nodes and forwarding servlet paths to them based on the ''loadfactor''. This setting can be customized in case the backend servers are not equal in terms of performance. The ''route'' property is important, it specifies a unique ID of a backend server and will be used when setting up Open-Xchange Servers later. Please see the Apache mod_proxy_ajp [http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html documentation] for more details.

$ vim /etc/apache2/conf.d/proxy_ajp.conf

<IfModule mod_proxy_ajp.c>

<Proxy *>
Order deny,allow
Allow from all
</Proxy>

<Proxy balancer://oxcluster>
BalancerMember ajp://10.20.30.213:8009 smax=0 ttl=60 retry=5 loadfactor=50 route=OX-1
BalancerMember ajp://10.20.30.215:8009 smax=0 ttl=60 retry=5 loadfactor=50 route=OX-2
</Proxy>

ProxyPass /ajax balancer://oxcluster/ajax stickysession=JSESSIONID
ProxyPass /servlet balancer://oxcluster/servlet stickysession=JSESSIONID
ProxyPass /axis2 balancer://oxcluster/axis2 stickysession=JSESSIONID
ProxyPass /infostore balancer://oxcluster/infostore stickysession=JSESSIONID
ProxyPass /publications balancer://oxcluster/publications stickysession=JSESSIONID
ProxyPass /Microsoft-Server-ActiveSync balancer://oxcluster/Microsoft-Server-ActiveSync stickysession=JSESSIONID
</IfModule>

Restart the Apache 2 web server and check if it is possible to connect with a browser. By default, this configuration allows plain HTTP access. In order to offer privacy to the customer the connection must be secured by a HTTPS connection based on a valid certificate. It is also recommended to set a redirect for all plain HTTP connections to use HTTPS.

Add some required apache modules to the web server. See the general [[Main_Page#Installation_based_on_packages|installation guides]] for more information about configuration of ''expires'' and ''deflate''.

$ a2enmod proxy && a2enmod proxy_ajp && a2enmod proxy_balancer && a2enmod expires && a2enmod deflate && a2enmod headers

Restart the Apache web server after applying all configuration changes.
$ /etc/init.d/apache2 restart