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Article ID: 830229 - Last Review: May 27, 2005 - Revision: 2.3
The HTTP monitor for Fully Qualified Domain Name (FQDN) in hosts file fails if you do not use a proxy server entry
SYMPTOMS
When you specify a Fully Qualified Domain Name (FQDN) that
is defined in your hosts file as the URL that is monitored in an HTTP data
collector, the
HTTP data collector displays an http status code of
400 on the statistics tab. You also see the following error message on the statistics tab:
cannot find server or DNS error.
The data
collector will display a status of critical when it is not expected.
If
the HTTP data collector is configured to log errors in the Websitefailures.log
file, you may see an entry in Websitefailures.log that is similar to the
following:
System: MYSTYSTEM
Time: 2/17/2004 4:12:08 PM
Name: http://mysite.bob
URL: http://mysite.bob
Status Code: 400
Status Text:
Error Description: Error: Cannot find server or DNS Error
Response Time (msec): 0
WMI Status: 0
Text Response (HTTP body):
CAUSE
This problem occurs because of a change in behavior in
Application Center 2000 Service Pack 2.
RESOLUTION
To resolve this problem, specify
localhost
on port 80 as the proxy server for this HTTP data collector:
- In the Application Center 2000 console, right-click the
data collector, and then click Properties.
- Click the Details tab.
- Select the Proxy server check box.
- In the Address box, type
localhost.
- In the Port box, type
80.
STATUS
This
behavior is by design.
APPLIES TO
- Microsoft Application Center 2000 Service Pack 2
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