@Marvin I want to install self-hosted Prefect server with dashboard(that's Prefect UI ) in my Ubuntu server, could you share me the install document?

Could you please specify which version of Prefect you are interested in installing on your Ubuntu server? Prefect 2.x and 3.x have different documentation. Once I know which version you're working with, I can look up the relevant installation instructions for a self-hosted Prefect server with a dashboard.

My prefect version is 3.0.10

To install a self-hosted Prefect server with the dashboard (Prefect UI) on your Ubuntu server, you can follow the general instructions provided in Prefect 3.x documentation. Here’s a summarized guide to get you started: 1. Create a Prefect User: - In your terminal, create a dedicated user for running Prefect to ensure security and manage permissions better:

sudo useradd -m prefect
     sudo passwd prefect

- Log in to the new user account:

sudo su prefect

2. Install Prefect: - First, you need Python and pip installed on your server. - Install Prefect globally using pip:

pip3 install prefect

- This guide assumes installation in a global environment. If you prefer using a virtual environment, adjust the

ExecPath

accordingly when setting up a systemd service. 3. Setup and Run Prefect Server: - You will then need to setup your Prefect server instance. Make sure you have necessary dependencies like a database (SQLite is an option for smaller setups) and networking setups to allow your Prefect server to communicate correctly. These steps provide a high-level overview to get your self-hosted Prefect server running without Kubernetes on an Ubuntu server. For complete and up-to-date details, make sure to consult Prefect's server management documentation: Host Prefect server.

Hi @Marvin I follow up this install document https://docs.prefect.io/3.0/manage/self-host in my Ubuntu server, from console log, it prompts me: Check out the dashboard at http://127.0.0.1:4200 But this 127.0.0.1 is the localhost of the Ubuntu server, then how can I log in this Prefect server dashboard from Web browser?

To access the Prefect server dashboard from your web browser, you'll need to expose the service running on your Ubuntu server's localhost (127.0.0.1) to your network. Here's how you can do this: 1. Access via Server IP: - Replace

127.0.0.1

with the actual IP address of your Ubuntu server. If you're on a local network, this would be the internal IP (like

192.168.x.x

), or if the server has a public IP, you can use that. - For example, if your server's IP is

192.168.1.10

, you can access the dashboard in your browser at

<http://192.168.1.10:4200>

. 2. Configure Firewall: - Ensure that your Ubuntu server's firewall allows incoming connections on port

4200

. You can use

ufw

to open this port:

sudo ufw allow 4200

3. Modify Prefect Server Bind Address (Optional): - If needed, you can modify the Prefect server configuration to bind to the server's IP address instead of

127.0.0.1

. This change may depend on how the Prefect server is started (e.g., through a service manager or manually). 4. Use an SSH Tunnel (if needed): - If you want to keep the server available only on localhost and your Ubuntu server is remote, you can set up an SSH tunnel to forward the port from your client machine:

ssh -L 4200:localhost:4200 <your-username>@<server-ip>

- This command will forward port

4200

from the server to your local machine, allowing you to access

<http://localhost:4200>

in your browser to reach the Prefect dashboard. Make sure to use secure methods that match your network configuration and security requirements. Adjusting your server's IP settings or using SSH tunneling, as needed, will allow you to access the dashboard from your browser.

@Marvin how to modify the Prefect server configuration to bind the server's IP address instead of 127.0.0.1?

To modify the Prefect server configuration to bind to your server's IP address instead of

127.0.0.1

, you may need to manually configure the server's network settings or use a reverse proxy. Here's how you can approach this: 1. Use a Reverse Proxy (e.g., Nginx): - Set up a reverse proxy to forward requests to Prefect. This setup is common, especially when you want to manage incoming requests or host multiple services. - Install Nginx and then configure it to forward traffic from your server IP to the Prefect service running on

127.0.0.1:4200

. Here is a basic example of an Nginx configuration:

server {
       listen 80;
       server_name your-server-ip;  # Replace with your server's IP or domain

       location / {
           proxy_pass <http://127.0.0.1:4200;>
           proxy_set_header Host $host;
           proxy_set_header X-Real-IP $remote_addr;
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           proxy_set_header X-Forwarded-Proto $scheme;
       }
   }

- Save the configuration and restart Nginx:

sudo systemctl restart nginx

. 2. Direct Binding (if applicable): - If the Prefect server startup command provides an option to specify the bind address, you can set it directly in the command. - However, Prefect's default settings typically bind to

0.0.0.0

or provide limited configuration exposure directly through Prefect. 3. Environment Variables: - Use environment variables like

PREFECT_UI_API_URL

to specify external access configurations if utilizing advanced setups. For detailed setups and any specific configurations required for your system, you might want to refer to the following Prefect documentation, as it contains sections about of utilizing reverse proxies: Manage settings and profiles.