Determining why NetCache is not servicing any URLs

About this section

This section lists the configuration items to check if NetCache cannot service any Web requests. Several configuration errors can cause NetCache to not service Web requests for users.

Note
For problems related to media player URLs, see the troubleshooting sections in the streaming media chapter in the Guide to Caching Protocols and Services.

The log files can provide clues

Check the Messages log and the Web access log for clues as to the source of the problem. Often you can quickly determine whether an obvious configuration problem exists.

If you see error codes, check an HTTP reference for descriptions of the return values.

Configuration items to check

If you cannot determine the source of the problem from the log files, check the following items:

If you have enabled protocol authentication on the Authentication - General page (Setup tab > Authentication > General) and Authentication - LDAP page (Setup tab > Authentication > LDAP) in the Appliance Manager, but you have not pointed NetCache to an LDAP server or RADIUS server, or you have not added users to the NetCache user database, the NetCache appliance cannot service requests.
Try turning off protocol authentication and then requesting a URL to confirm that this is the source of the problem.
If you have configured any access controls, check the access control configuration for a setting that might stop all requests. Check also for incorrect regular expressions.
For more information about creating access controls, see the chapter about access controls in the Security Guide.
Use the show status.http.* command to display HTTP statistics.
Verify the DNS configuration.
See Verifying the DNS configuration for details.
Try running the sysstat command at the console. This command reports the number of URLs being served, disk activity, and network traffic.
See Using the sysstat command to get the system status for more information.
If you are using an automatic proxy configuration file (proxy.pac), check its configuration. See the Deployment Guide for an annotated example of this file.