Environment
- Chrome Web Browser: All Supported Versions
Objective
Capture diagnostic logs from a web browser for UI troubleshooting using Chrome
Resolution
-
Set up logging
- Open Google Chrome
- From the Chrome Click F12 or right-click > Inspect
- Select the Console tab in the Chrome Developer Tools Console (Bottom Window)
- Click the Clear button to clear out any existing logs from the console.
- Generate a HAR file
- Select the Network tab
- Look for a round Record button in the upper left corner of the Network tab, and make sure it is red. If it is grey, click it once to start recording.
- Check the box next to Preserve log
- Click the Clear button to clear out any existing logs from the Network tab.
- Reproduce the issue
- When finished, right click inside the table of network events, select Save as HAR with Content , and save the file to your computer
- Check for and save HTTP Error details
- For any errors observed above, note the Request URL and HTTP error number (4## or 5##)
- Select the Console tab
- Locate the error number tied to the Request URL
- Right-click matching error and click "Save As..."
- Set name of file, including at least HTTP error number, and save file to your computer
Example
Original filename: defense-prod05.conferdeploy.net-1646930859819.log
Updated filename: 400_defense-prod05.conferdeploy.net-1646930859819.log
- Upload logs
- Attach the HAR file and console file to your case or https://community.carbonblack.com/docs/DOC-4211 for analysis
Additional Notes
- All credentials and session cookies within a HAR file should be removed before sharing with Carbon Black
- The HAR file is a text file, it can be opened in a text editor and searched for the SESSION cookie value and replaced with
<REDACTED>
- This can also be done for passwords and API tokens if they were part of the recording
- It's also recommended to logout from the Carbon Black session after recording a HAR session. This is a precaution that should invalidate session IDs if any were missed.
- HAR Files under 5 MB can be attached directly to a Carbon Black Technical Support case.
- Files larger than 5 MB should be uploaded to CB Vault.
- For EDR issues, debug logging can be enabled in the console: EDR: How to enable debug logging in Chrome browser
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