Using HP WebQoS
Troubleshooting
/etc/opt/webqos/qos.conf file. MaxPollDescriptors defines the maximum number of connections that are polled or checked for data.
Verify that MaxPollDescriptors is set to a reasonable value. If this message continues to appear, then the web server may be under a denial of service attack.
In this kind of denial of service attack, a “virtual vandal” is trying to flood your web server with empty requests to try and prevent it from serving valid requests. WebQoS protects your web server from this type of attack by allowing the web server to continue to serve valid requests.
Error Messages Viewable From the Terminal Window
SCA: Couldn't open trace file.
SCA: Couldn't open logging file.
These SCA error messages may appear on the console if one of the following is true:
•The SCA is not started as root.
•The file system is full.
•The file system with the log or trace file is unmounted.
Logging and Tracing
The WebQos components use the following log files to record WebQoS related activity. You can use these files to monitor the WebQoS server and help with troubleshooting. The files are:
•/var/opt/webqos/logs/qoslog
•/var/opt/webqos/logs/qostrace
•/var/opt/webqos/measures
•/var/opt/webqos/logs/acclog
•/var/opt/webqos/logs/acctrace
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