MACROMEDIA COLDFUSION 5-ADVANCED ADMINISTRATION, Руководство пользователя

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288 Chapter 12 Configuring ColdFusion Clusters
11 Click Register to create the probe. ClusterCATS begins to test the selected server
immediately.
Editing and removing ColdFusion probes
To edit or remove a ColdFusion probe:
1 Open the ClusterCATS Web Explorer if it is not already open.
2 Click the Show Cluster link. The Show Cluster page appears.
3 Enter the fully qualified host name of the server for which you want to configure
the ColdFusion probe in the Web Server Name field.
Startup
Parameters Enter the actual URL of the site you want the probe to access
followed by a text string that appears on a page within the site
you are probing (cfprobe.cfm in the screen shown in step 9.)
Note: Do not modify the RESTART explicit parameter if you
want the probe to automatically restart the ColdFusion Server
upon detecting a failure. However, if you do not want
ClusterCATS to automatically restart the ColdFusion Server
upon detecting a failure, replace RESTART with
NORESTART.
Timeout (sec) Enter a time, in seconds, to indicate how long ClusterCATS
should wait before a ColdFusion server failure is registered.
Do not set this value to less than 60 seconds because
ClusterCATS may restart the ColdFusion server inadvertently
(due to network congestion, for example), rather than detect
an actual failure on the ColdFusion server.
Frequency (sec) Enter a time, in seconds, to indicate how often the probe
checks the ColdFusion server.
Probes that restart Web applications should be configured to
run no more frequently than the time it takes to stop and
restart ColdFusion. This time is highly site-specific, because it
depends on the system resources available on the servers
and the volume of traffic at the site.
For probes that do not restart the Web application, the
Frequency depends on how long you can reasonably afford to
have your Web application off-line. A minimum Frequency of
15 seconds is recommended.
Return value Enter 0 so that the probe succeeds on a successful probing of
the page. Enter a non-zero number to have the probe succeed
on a failure.
The default is 0. Only under rare circumstances would you
change this to a non-zero number.
Field Description