[Hue WebUI] The error "Proxy Error" is reported when a user accesses the Hue WebUI

Symptom

"Proxy Error" is displayed when the Hue page is opened.

Cause Analysis

• Httpd does not receive packets or receives incorrect packets due to network faults, such as the high packet error rate and high latency.
• The authentication relationship between the Httpd service and the Hue service fails because of clock change or other reasons.

Fault Locating

1. Check whether a network fault or clock change occurs.
2. Check whether alarms related to the Hue service have been generated or still exist.

Procedure

1. Log in to FusionInsight Manager to check whether any network fault, clock change, or Hue service alarm exists. If yes, contact the administrator to rectify the fault. Then, check whether the Hue page can be normally opened.
   • If yes, no further action is required.
   • If no, go to 2.

2. Obtain the address of the current Httpd server, which is the host address in the URL of the Hue page. That is, if the URL of Hue is https://192.168.0.1:21201, the Httpd service address is 192.168.0.1.
3. Log in to the Httpd server and check logs in /var/log/Bigdata/httpd/error_log.
4. Check whether the error message "AH01102: error reading status line from remote server" or "AH00898: Error reading from remote server" exists in the error_log file. (You can open the Hue page for several times to confirm the error.)
   • If yes, restart the Hue service on FusionInsight Manager and go to 5.
   • If no, go to 6.

5. Restart the Hue service and open the Hue page again.
   • If yes, no further action is required.
   • If no, go to 6.

6. Contact the O&M personnel.