Fortinet 256 FortiWeb 5.0 Patch 6 Administration Guide
5. Click OK.
6. To use the server health check to monitor availability of the members in a server farm, select
it as the Server Health Check in a policy (see “Configuring a server policy” on page 483).
See also
•Configuring a server policy
•Grouping your web servers into server farms
Grouping your web servers into server farms
Server farms define a group of physical and domain servers (web servers) among which the
FortiWeb appliance will distribute connections, or where the connections will pass through to,
depending on the FortiWeb appliance’s operating mode. (Reverse proxy mode actively
distributes connections; offline protection and both transparent modes do not.)
•Reverse proxy mode — When the FortiWeb appliance receives traffic destined for a virtual
server, it can forward the traffic to a physical or domain server or a server farm. If you have
configured the policy to forward traffic to a server farm, the connection is routed to one of
the physical or domain servers in the server farm. Which of the physical or domain servers
URL Path Type the URL, such as /index.html, that will be used in the
HTTP/HTTPS GET request to verify the responsiveness of the server.
If the web server successfully returns this URL, and its content
matches your expression in Matched Content, it is considered to be
responsive.
This option appears only if Protocol Type is HTTP/HTTPS. The
maximum length is 127 characters.
Timeout Type the maximum number of seconds that can pass after the server
health check. If the web server exceeds this limit, it will indicate a
failed health check.
Retry Times Type the number of times, if any, a server health check will be retried
after failure. If the web server fails the server health check this
number of times consecutively, it is considered to be unresponsive.
Interval Type the number of seconds between each server health check.
Trigger Action Select the name of a trigger, if any, that will be used to log or notify an
administrator if a server becomes unresponsive.
Matched Content Type either:
• the exact reply content that must be present to indicate that the
server is available
• a regular expression matching that content
This prevents the test from falsely indicating that the server is
available when it has actually replied with an error page, such as the
one produced by Tomcat when a JSP application is not available.
This option appears only if Protocol Type is HTTP/HTTPS.
To create and test a regular expression, click the >> (test) icon. This
opens a Regular Expression Validator window where you can
fine-tune the expression (see “Regular expression syntax” on
page 673)
Setting name Description