iTP Secure WebServer System Administrator's Guide (Version 7.0)

Planning the iTP Secure WebServer PATHMON

Environment

iTP Secure WebServer System Administrator’s Guide—523346-012

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Configuring the PATHMON Environment

The configuration of the iTP Secure WebServer PATHMON environment is specified in

the httpd.config file. You specify the configuration file when you start the iTP

Secure WebServer process.

The httpd.config file consists of keyword-value pairs. The sample configuration file

httpd.config.sample is included in the /usr/tandem/webserver/conf

directory. That file contains all keywords along with their default values and ranges.

The configuration file can contain spaces, tabs, blank lines, and lines that start with a

pound sign (#), which identifies the line as a comment. The keywords are

case-sensitive and must be spelled exactly as defined or they will not be recognized. A

keyword must be followed by a valid value.

For an example of the httpd.config file, see Section 7, Configuring the iTP Secure

WebServer. The example includes commands for configuring several processes that

are essential in the HP environment for the iTP Secure WebServer. The configuration

file creates a PATHMON process and configures the application servers and the

Distributor process.

For detailed descriptions of all the configuration directives you can specify in the server

configuration file (httpd.config), see Appendix A, Configuration Directives.

To understand the configuration file, you must know the basic NonStop TS/MP

architecture and characteristics of the PATHMON environment. If you are not already

familiar with the basics of using NonStop TS/MP, see the TS/MP System Management

Manual

Threading Considerations for the httpd Server

There are two techniques you can use, individually or in combination, to allow the iTP

Secure WebServer to handle many requests in parallel. The techniques are:

•

Allow for a large number of servers in the httpd server class.

•

Allow each server to handle multiple requests in parallel.

To allow for multiple servers, you use the Maxservers command in the Server directive.

This command specifies the total number of servers in the class. If you want each

server to be single-threaded, the value of Maxservers should be large enough to

accommodate the maximum number of concurrent requests your WebServer must be

able to handle.

To allow for multithreading in each server process, you use the

TANDEM_RECEIVE_DEPTH environment variable. (The Env command in the Server

directive enables you to specify environment variables.) The value of