Installing IBM HTTP Server and configuring load balancer plugin

To support clustering needs IBM HTTP server and plugin. The IBM HTTP server and the plugin provides load balancing and a single point of entry for Interact RunTime. The server and the plugin are a part of the Wepshere Application Server (WAS) extensions. See IBM documentation to configure WAS, the IBM HTTP Server, and the plugin.

Complete the following steps to configure the IBM HTTP server and configuring the load balancer plugin:

Create a plugin_cfg.xml file by using WAS, or use the following plugin_cfg.xml as an example:

Replace host_noden and port_noden with the host and port of the InteractConnectors from the RunTime cluster.

<?xml version="1.0" encoding="UTF-8"?>
<Config ASDisableNagle="false" AcceptAllContent="false" 
AppServerPortPreference="HostHeader" ChunkedResponse="false" FIPSEnable="false" 
IISDisableNagle="false" IISPluginPriority="High" IgnoreDNSFailures="false" 
RefreshInterval="60" ResponseChunkSize="64" SSLConsolidate="false" 
SSLPKCSDriver="REPLACE" SSLPKCSPassword="REPLACE" TrustedProxyEnable="false" 
VHostMatchingCompat="false">
		<Log LogLevel="Error" Name="./logs/defaultServer/http_plugin.log"/>
		<Property Name="ESIEnable" Value="true"/>
		<Property Name="ESIMaxCacheSize" Value="1024"/>
		<Property Name="ESIInvalidationMonitor" Value="false"/>
		<Property Name="ESIEnableToPassCookies" Value="false"/>
		<Property Name="PluginInstallRoot" Value="."/>
		<VirtualHostGroup Name=="default_host">
				<VirtualHost Name="host:port"/>
		</VirtualHostGroup>
		<ServerCluster CloneSeparatorChange="false" GetDWLMTable="false" 
IgnoreAffinityRequests="true" LoadBalance="Round Robin" 
Name="defaultServer_default_node_Cluster" PostBufferSize="64" 
PostSizeLimit="-1" RemoveSpecialHeaders="true" RetryInterval="60">
		<Server CloneID="9ec9fa61-0e3e-431f-a497-8c7b5fdd201e" ConnectTimeout="0" 
ExtendedHandshake="false" MaxConnections="-1" Name="default_node_defaultServer0" 
ServerIOTimeout="900" WaitForContinue="false"
		>
		<Transport Hostname="host_node1 Port=port_node1 Protocol="http"/>
		</Server>
		<Server Name="Detectdb2" ConnectTimeout="5" ExtendedHandshake="false" 
ServerIOTimeout="60" LoadBalanceWeight="1" MaxConnections="-1" 
WaitForContinue="false">
		<Transport Hostname="host_node2 Port=port_node2 Protocol="http"/>
		</Server>
<Server Name="Detectn1" ConnectTimeout="5" ExtendedHandshake="false" 
ServerIOTimeout="60" LoadBalanceWeight="1" MaxConnections="-1" 
WaitForContinue="false">
		<Transport Hostname="host_node3 Port=port_node3 Protocol="http"/>
		</Server>
		<ServerCluster>
		<UriGroup Name="default_host_defaultServer_default_node_Cluster_URIs">
				<Uri AffinityCookie="JSESSIONID" AffinityURLIdentifier="jsessionid" 
Name="/servlets/*"/>
		</UriGroup>
		<Route ServerCluster="defaultServer_default_node_Cluster" 
UriGroup="default_host_defaultServer_default_node_Cluster_URIs" 
VirtualHostGroup="default_host"/>
</Config>

Configure the httpd.conf file to add the plugin module and provide the path of the plugin-cfg.xml file by adding the following ines at the end of httpd.conf file:

LoadModule was_ap22_module 
WAS_INSTALLATION_DIR>/Plugins/bin/64bits/mod_was_ap22_http.so
WebSpherePluginConfigIBM_HTTP_SERVER_DIR/conf/plugin-cfg.xml

Make sure that you add the IBM HTTP Servers URL to the InteractConnector URL in confguration. Complete the following steps to add the IBM HTTP Servers URL to InteractConnector URL:

In the configuration tree, go to IBM EMM > Opportunity Detection > System > InteractConnector.

Edit the Server URL to reflect the following value:

http://HTTP_SERVER_HOST:HTTP_SERVER_PORT/servlets/StreamServlet