Learning

December 4, 2020

Contributed by:

S S

Following are some of the best practices recommended when encountered with Learning functionality issues:

Aslearn process:

Verify that the process aslearn is running.
Check top command output

Check output of ps command by executing the following command:

ps -ax | grep aslearn | grep -v "grep"

Example:

 root@ns\# ps -ax | grep aslearn | grep -v "grep"
 1439  ??  Ss     0:03.86 /netscaler/aslearn -start -f /netscaler/aslearn.conf
 <!--NeedCopy-->

Identify recent configuration commands ran prior to the observed problem by verifying the ns.log file:

/var/log/ns.log
Inspect aslearn logs to check for aslearn messages:

/var/log/aslearn.log
Isolate the profile and security check that is effected
Identify the GUI and CLI command which is failing by executing the following command:

show appfw learningdata <profileName> <securityCheck>

Examples:
- show learningdata test_profile starturl
- show learningdata test_profile crosssiteScripting
- show learningdata test_profile sqLInjection
- show learningdata test_profile csRFtag
- show learningdata test_profile fieldformat
- show learningdata test_profile fieldconsistency
Perform integrity check of sqlite from bsd shell prompt:

nsshell # sqlite3 /var/nslog/asl/<profile_name_in_lowercase>.db 'pragma integrity_check;

Examples:
```
 root@ns# sqlite3 /var/nslog/asl/tsk0247284.db 'pragma integrity_check;'
 ok
 
```
Deploy or remove rules to start learning again:
- If 2000 learn items (per protection) are reached, you cannot start learning any more for that protection
- If 20 MB size is reached for the database, stop learning for all protections
- Restart aslearn process
*/netscaler/aslearn -start -f/netscaler/aslearn.conf*
Check the space in the /var folder by executing the following:

du -h /var
Check the learning threshold limits by executing the following command:

show appfwlearningsettings <profile_name> <securityCheck>
Collect learned data by executing the following command:

export appfwlearningdata <profile_name> <securityCheck>
Ascertain that learned data is uploaded in the collector.

The official version of this content is in English. Some of the Cloud Software Group documentation content is machine translated for your convenience only. Cloud Software Group has no control over machine-translated content, which may contain errors, inaccuracies or unsuitable language. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, suitability, or correctness of any translations made from the English original into any other language, or that your Cloud Software Group product or service conforms to any machine translated content, and any warranty provided under the applicable end user license agreement or terms of service, or any other agreement with Cloud Software Group, that the product or service conforms with any documentation shall not apply to the extent that such documentation has been machine translated. Cloud Software Group will not be held responsible for any damage or issues that may arise from using machine-translated content.

Was this helpful

Learning

December 4, 2020

Contributed by:

S S

December 4, 2020

Contributed by:

S S

Learning

In this article