Troubleshooting Steps for iKnowledgeScreen (Advanced Knowledge component)

Steps to troubleshoot and resolve common issues with the HCL.iAutomate.iKnowledgeScreen service, including checking configuration files, verifying service account settings, installing missing libraries, and ensuring the service is running.

iKnowledgeScreen is an AdvancediKnowledge component composing of screen APIs for the analysis of the documents indexed by the iKnowldegIndexer. It is a component developed using python and is hosted on Apache Web Server as a service under the name HCL.iAutomate.iKnowledgeScreen.

HCL.iAutomate.iKnowledgeScreen service is not starting

Table 1. Table 114 - iKnowledgeScreen: Scenario 1
Issue Description HCL.iAutomate.iKnowledgeScreen service is not starting
Modules Impacted iKnowledgeScreen
Probable Root Cause Invalid “iKnowledgeScreen.conf” file content

Steps to resolve

  1. Check for existence of the file iKnowledgeScreen.conf at location <Apache_Root_Folder_Path>/conf.
  1. For e.g. - “C:/Apache24/conf” has <Apache_Root_Folder_Path> as “C:/Apache24”.
  2. Verify the contents of file iKnowledgeScreen.conf by checking the snippet with paths to << iKnowledgeScreen_Directory>>. Verify and change the <VirtualHost *> tag with correct path entries to << iKnowledgeScreen_Directory>> as shown below. Where << iKnowledgeSearch_Directory>> is C:/HCL.iAutomate.AdvancediKnowledge/iKnowledge_Screen” in the snippet from iKnowledgeSearch.conf.

<VirtualHost *>

WSGIScriptAlias / C:/ HCL.iAutomate.AdvancediKnowledge/iKnowledgeScreen /knowledge_screen_main.wsgi

SSLVerifyClient require

SSLVerifyDepth 10

<Directory C:/HCL.iAutomate.AdvancediKnowledg/iKnowledgeScreen>

WSGIApplicationGroup %{GLOBAL}

Require all granted

</Directory>

</VirtualHost>

  1. Ensure that service was created through Service Account and not through Local account. Refer to below figure to check the status.
Figure 1. Figure 154 - HCL.iAutomate.iKnowledgeScreen
  1. If not, open Windows Command Prompt in Administrator mode and run the below command:

sc config HCL.iAutomate.iKnowledgeScreen obj= “ID” password= “PSWD”

where ID is the [Domain\SA ID] and PSWD is the [Password of SA] and SA is

[Service Account].

Log On As’ field corresponding to the service HCL.iAutomate.iKnowledgeSearch should be changed to ‘Service Account’. Click Start to start the service.

Service returns Internal Server Error - status code 500

Table 2. Table 115 - iKnowledgeScreen: Scenario 2
Issue Description Service is reachable but returns Internal Server Error with status code 500
Modules Impacted iKnowledgeScreen
Probable Root Cause Library is missing

Steps to resolve

  1. Check the Apache error log at <Apache_Root_Folder_Path>/logs/error.log.
  1. If the error is because of the missing package, perform the following steps:
  • Open Windows Command Prompt in Administrative mode in Apache_Root_Folder_Path:
  • If open internet access is available, run the below command:

pip install package_name

  • If open internet access is not available, download wheel file for package from where user has internet connectivity and move onto server at same location where it needs to be installed. E.g. https://pypi.org has a repository of most used wheel files, else other sources are available as well. Subsequently, run the below command:

pip install package_name.whl

‘404 Resource Not Found’

Table 3. Table 116 - iKnowledgeScreen: Scenario 3
Issue Description Error message ‘404 Resource Not Found’ when iKnowledgeScreen is hit
Modules Impacted iKnowledgeScreen
Probable Root Cause

Paths are not correct in iKnowledgeScreen.conf

Port is not correct

Steps to resolve

  1. If the issue is due to the incorrect paths, refer to resolution steps mentioned in Table 114 - iKnowledgeScreen: Scenario 1
  1. Also, check if correct port is being used. To identify the correct port, perform the following steps:
  • Open iKnowledgeSearch.conf
  • Search for Listen xxxx

e.g. – Here the image below shows the port set for iKnowledgeSearch component is 9000.

#

Listen 9000

# ports, instead of the default. See also the <VirtualHost>

# directive

  1. The set port is one where iKnowledgeScreen is deployed.

‘Could not get any response’

Table 4. Table 117 - iKnowledgeScreen: Scenario 3
Issue Description Error message ‘Could not get any response’ appears when iKnowledgeScreen is being hit.
Modules Impacted iKnowledgeScreen
Probable Root Cause HCL.iAutomate. iKnowledgeScreen service is not running

Steps to resolve

  1. Press Win+R, type services.msc and press Enter to open Windows Services.
Figure 2. Figure 155 - HCL.iAutomate. iKnowledgeScreen
  1. Find service HCL.iAutomate.iKnowledgeScreen and select it.
  2. Click Start to start the service, if it’s not running already.
Figure 3. Figure 156 - HCL.iAutomate. iKnowledgeScreen