User manual

Chapter 5: Server Management

136 Cobalt RaQ XTR User Manual

Web server

This service is always on. It allows site users to access Web content

You can modify the parameters for the Web server.

1. Select Server Management > Control Panel. The “Service Settings” table

appears.

2. Click the green pencil icon next to Web server. The “Web Server

Parameters” table appears; see Figure 61. You can conﬁgure the following:

• Minimum spare servers—When the Web server starts or is in an idle

state, this parameter is the minimum number of Web server processes

available for serving Web requests.

• Maximum spare servers—The Web server launches additional

processes, as needed, to service additional load. This parameter is the

maximum number of processes the system will launch. For high-traffic

sites, increase this parameter for better performance.

• Maximum clients—This is the maximum number of requests that can be

made to the server at any time. If this number is exceeded, clients receive

a message that the server is busy and are asked to try again later. This

number is useful for controlling the load on your server.

• Hostname lookups—This turns hostname lookups on for the Web

server. This causes the server to do a DNS lookup on the client IP when

it connects to the server, and record it in the log files. This information is

then available in the server usage Web reports. Without this feature, only

client IP addresses are reported in the Web server usage domain report.

3. Click Save Changes.

Caution: Hostname lookups can severely limit the performance of

the server but they provide more detailed information in the

“Requests by Domain” report under Server Usage > Web.

For more information on server reports, see “Server Usage” on

page 151.