hey @Marvin, the UI to my prefect setup on a VM is showing me that it cannot connect to Server API. However, i have manually set the

PREFECT_API_URL

and the

PREFECT_UI_API_URL

to the correct url. The weird thing is that the SERVER API url it is showing me that it cannot connect to is an old URL that i no longer use. How can i change this so it uses the correct

PREFECT_API_URL

?

It appears that you might need to update your

PREFECT_API_URL

environment variable to point to the current URL of your Prefect Server API. To do so, you need to set the environment variable

PREFECT_API_URL

to the correct URL. This might need to be done both for the server and possibly for workers as well, as they will need to know how to communicate with your server. If you're using a local Prefect server instance, you would typically set the API URL as follows:

bash
export PREFECT_API_URL="<http://127.0.0.1:4200/api>"

Also ensure your

PREFECT_UI_API_URL

is set correctly to the same address, which the UI uses to communicate with the backend. If the settings are correct and the UI is still attempting to use an old URL, this could be due to a caching issue or stored configuration that hasn't been updated. You might need to: - Restart your Prefect server or UI service after updating the environment variable - Check if there is any configuration file that might be overriding the environment variable - Clear the browser cache or try accessing the UI from an incognito window to avoid old settings being used Here's the link to the Prefect settings documentation where you can get more details on how to configure your Prefect instance properly. If the issue persists, you may want to check if there are any relevant issues on GitHub or reach out to the Prefect community for further help.

@Marvin how do i restart the UI service?

To restart the UI service for Prefect, if you have daemonized the services using systemd, for example, you would use the following commands:

bash
sudo systemctl daemon-reload
sudo systemctl restart my-prefect-service

Replace

my-prefect-service

with the name of the service that runs your Prefect UI. If you are running Prefect UI manually, you would typically stop the service using a command like

Ctrl+C

in the terminal where it's running, and then start it again using the appropriate Prefect CLI command. For example:

bash
prefect server start

This will spin up the local Prefect server UI. In case you want to start the UI in development mode, which reloads on code changes, you can use the following command:

bash
prefect dev ui

You can find further information on the Prefect documentation for hosting a Prefect server instance and the guide on daemonizing services. If you were contributing or working with the UI in a development environment, you would use Prefect development commands as noted in the contributor guide. Please ensure you replace the service names and commands with those applicable to your setup. If you have customized service names or additional configuration, you will need to adjust accordingly.