An unknown error has been encountered page is displayed instead of the login page. This KB article will help you with a solution to fix this error.
Analysis
There are multiple issues that could lead to this error.
-
Network connectivity issue
This issue can occur due to network connectivity problems, such as loss of internet connection, DNS resolution failures, firewall restrictions, or issues with the server hosting the API.
Solution
Check the network connection and ensure there are no connectivity problems. Verify that you can access the internet and communicate with the Zmanda server.
-
Backend Services are not working
This issue can occur if the backend service is not working. Run the following command and ensure that the service is running.
setup-zmc
Solution
If you observe any service in an inactive state in the output of the setup command, then restart the service manually using systemctl. In the example given below, we are restarting the zmc-rest service.
sudo systemctl restart __sub-zmc-rest.service