Configuring Multiple Apache Instances

This topic describes the procedure for configuring multiple instances of Apache Server.

By default, the Gateway is configured in LDAP as a single instance. You can create more than one instance of the Process Platform Web gateway.

1. Set the following properties in the wcp.properties file:
   
   • com.eibus.web.gateway.maxinstances=n where n is the number of processes you want to create. Example: com.eibus.web.gateway.maxinstances=2
   • com.eibus.web.gateway=webgateway@<machine name> (where webgateway@<machine name is the name of the LDAP entry used for configuration. If you do not want to use the default name, you can change the name). Example: com.eibus.web.gateway=webgateway@srv-cordys-1w
2. Create a new connection point for each new instance of the gateway. For information on creating a connection point, refer to Creating a Connection Point for a WebGateway Instance.
3. In the Httpd.conf file, change only StartServers and ServerLimit from 1 to 10; see below:

   Attribute	Description
   ServerLimit	Specifies the number of processes that can be configured on a server
   StartServers	Specifies the initial number of server processes to start
   MaxClients	Specifies the maximum number of simultaneous client connections
   MinSpareThreads	Specifies the minimum number of spare worker threads
   MaxSpareThreads	Specifies the maximum number of spare worker threads
   ThreadsPerChild	Specifies the constant number of worker threads in each server process
   MaxRequestsPerChild	Specifies the maximum number of requests a server process serves

   The following is the example:

   <IfModule worker.c>
   	ServerLimit 10 
   	StartServers 3 
   	MaxClients 1500 
   	MinSpareThreads 200 
   	MaxSpareThreads 750 
   	ThreadsPerChild 200 
   	MaxRequestsPerChild 0 
   </IfModule>

   Note: These new instances that are being created must not be started or stopped frequently.

4. Restart Apache(s).
   Apache will run with multiple instances or processes.